The cognitive interview | AQA A-Level Psychology Revision
Updated: Sep 9
For 7182 specification, first teach in September 2025
AQA A-Level Psychology | Free Revision Notes
Estimated study time: 40 minutes
These Cognitive interview A-Level Psychology revision notes explain how police interviewers can help eyewitnesses retrieve more information without introducing misleading suggestions. The cognitive interview uses four main techniques: reporting everything, mentally reinstating the context, recalling events in a different order and changing perspective. Each technique is intended to provide additional routes into memory or reduce the effect of expectations. You will also examine the enhanced cognitive interview and evaluate whether the method improves accurate recall enough to justify the additional time and training it requires.
Learning Objectives 🎯
By the end of this revision page, you should be able to:
Describe the four techniques used in the cognitive interview.
Explain how each technique is intended to improve recall.
Apply cognitive interview techniques to unfamiliar eyewitness situations.
Describe features of the enhanced cognitive interview.
Evaluate research into the effectiveness of the cognitive interview.
Assess the practical usefulness and limitations of the technique.
Revision Notes đź“š
What is the cognitive interview?
The cognitive interview, or CI, is a police interviewing technique designed to improve the amount of accurate information recalled by eyewitnesses.
It was developed to apply psychological knowledge about:
Memory retrieval.
Retrieval cues.
The organisation of memories.
The effect of expectations on recall.
Communication between an interviewer and witness.
The cognitive interview does not involve hypnotising the witness or supplying possible answers.
Instead, the interviewer encourages the witness to retrieve the event in several different ways.
The four original techniques are:
Report everything
Reinstate the context
Change the order
Change the perspective
The purpose of the cognitive interview
A witness may have stored more information than they can immediately recall.
The problem may be one of accessibility rather than availability.
In other words:
The memory may be available in long-term memory.
The witness may not have suitable cues for retrieving it.
A different retrieval method may make additional details accessible.
This connects directly with the absence and reinstatement of retrieval cues.
The cognitive interview aims to provide several routes into the stored memory.
A basic comparison
Standard interview | Cognitive interview |
May follow a fixed sequence of direct questions | Encourages recall through several retrieval techniques |
Interviewer may control the conversation | Witness is encouraged to provide a fuller account |
Questions may focus on apparently important details | Witness reports all details, even those seeming unimportant |
Event is usually recalled in one order | Witness may recall it in different orders |
Witness usually gives their own viewpoint once | Witness may consider different perspectives |
Context may receive limited attention | Mental context reinstatement is used deliberately |
The cognitive interview should still avoid suggestive wording and unsupported assumptions.
Technique 1: Report everything
What does report everything mean?
Report everything means that the witness is encouraged to recall every detail they can remember, even if it:
Appears unimportant.
Seems incomplete.
Feels uncertain.
Does not fit with other details.
Is not obviously connected with the offence.
Has already been mentioned.
The interviewer should not decide too early which details are useful.
A minor detail may:
Become important later.
Support or contradict other evidence.
Act as a cue for another memory.
Help establish the sequence of events.
Be relevant to an aspect of the investigation unknown to the witness.
How reporting everything may improve recall
One memory can act as a cue for another.
For example, remembering the music playing in a shop might help a witness remember:
Where they were standing.
What happened immediately afterwards.
Who entered the shop.
What the offender said.
The process can be summarised as:
Apparently minor detail → activates associated memory → additional information becomes accessible
Reporting everything may therefore increase both the quantity and completeness of recall.
Application example
A witness says:
“I remember hearing a dog bark, but that probably does not matter.”
The interviewer encourages them to include it.
Remembering the dog may help the witness recall that:
The offender looked towards a nearby house.
A gate opened immediately afterwards.
The offender ran in that direction.
The original detail appeared unimportant but helped trigger connected information.
Reporting uncertainty
Reporting everything does not mean that witnesses should present guesses as facts.
A witness should be encouraged to distinguish between:
Something they clearly remember.
Something they think may have happened.
An inference about what probably happened.
Information heard after the event.
This is especially important because later information can contaminate memory through co-witness discussion.
Technique 2: Reinstate the context
What is context reinstatement?
Reinstate the context means asking the witness to mentally recreate the circumstances surrounding the original event.
The witness may be encouraged to remember:
The physical location.
The weather.
The lighting.
Background sounds.
Smells.
What they were doing.
What they were thinking.
How they were feeling.
Who else was present.
What happened immediately before the event.
The witness does not necessarily need to return physically to the scene.
They mentally recreate the context during the interview.
How context reinstatement may improve recall
Context reinstatement is based on the idea that information is easier to retrieve when cues present during encoding are available again during retrieval.
When an event occurs, the witness may encode:
The central event.
Features of the surroundings.
Internal thoughts and feelings.
Other sensory information.
Recreating these features may provide retrieval cues.
The process is:
Original context mentally recreated → cues from encoding become available → stored information is activated → recall improves
This applies the encoding specificity principle.
External context
External contextual cues may include:
The appearance of the street.
Traffic noise.
A particular smell.
The position of objects.
The time of day.
The weather.
For example, imagining the position of parked vehicles may help a witness recall where the offender was standing.
Internal context
Internal cues may include:
Emotional state.
Physical sensations.
Thoughts at the time.
Expectations.
Level of alertness.
For example, remembering that they were worried about missing a bus may help the witness reconstruct what they were looking at immediately before the incident.
Application example
Leah witnesses a theft while walking home in heavy rain.
During the interview, the officer asks Leah to close her eyes if comfortable and imagine:
The rain.
The shops she had passed.
The sound of traffic.
Where she was standing.
What she had been thinking.
These details may recreate cues that were present when the theft was encoded, helping Leah retrieve further information.
Mental rather than physical reinstatement
Returning to the scene may not be:
Safe.
Practical.
Ethical.
Possible.
Emotionally appropriate.
Mental reinstatement provides some of the original cues without requiring the witness to revisit the location.
However, the quality of the recreation depends on the witness’s ability to imagine and concentrate.
Technique 3: Change the order
What does changing the order mean?
Change the order means recalling the event in a different sequence from the one in which it happened.
The witness might:
Begin at the end and work backwards.
Start from the middle.
Recall one section before returning to an earlier part.
Describe events from several different starting points.
For example, instead of recalling:
Entered shop → noticed offender → heard demand → offender escaped
the witness might recall:
Offender escaped → heard demand → noticed offender → entered shop
How changing the order may improve recall
People often remember events using:
Expectations.
Familiar scripts.
Assumptions about what normally happens.
A logical narrative.
These expectations can lead witnesses to:
Fill in gaps.
Omit unusual details.
Report what they expected rather than what they observed.
Reconstruct the event into a familiar sequence.
Changing the order disrupts the witness’s usual narrative.
It may:
Reduce reliance on schemas.
Make fabricated accounts harder to maintain.
Provide new retrieval routes.
Bring overlooked details to mind.
Reveal inconsistencies requiring careful clarification.
Applying change of order
A witness first describes a burglary from beginning to end.
The interviewer then asks:
“Think about the moment the person left. What happened immediately before that?”
The witness works backwards and remembers that:
The offender dropped an object.
Someone shouted from outside.
The offender paused before leaving.
These details may have been overlooked during the original forward account.
Avoiding pressure
Changing the order can be mentally demanding.
The interviewer should:
Allow sufficient time.
Avoid rushing the witness.
Make clear that uncertainty is acceptable.
Avoid treating differences as proof of dishonesty.
Clarify that the purpose is to encourage alternative retrieval.
An inconsistency may reflect the difficulty of the task rather than deliberate deception.
Technique 4: Change the perspective
What does changing perspective mean?
Change the perspective means asking the witness to recall the event from another viewpoint.
The witness might consider:
What another person at the scene could have seen.
How the scene would have looked from another position.
What was visible from the doorway.
What the offender might have noticed.
For example:
“Describe what the incident might have looked like from the cashier’s position.”
The witness is not being asked to invent the cashier’s private thoughts.
They should remain focused on information that could be retrieved from their memory of the scene.
How changing perspective may improve recall
A witness’s original viewpoint may organise the memory in one particular way.
Considering another perspective may:
Provide a different retrieval route.
Direct attention towards previously overlooked parts of the scene.
Reduce the influence of the witness’s expectations.
Encourage recall of spatial relationships.
Help the witness separate what was directly seen from what was assumed.
Application example
A witness observed a robbery from near the entrance of a café.
The interviewer asks them to consider how the scene appeared from behind the counter.
This may prompt the witness to remember:
The offender repeatedly turning towards the counter.
The position of another customer.
An object placed near the till.
The route used to leave.
A potential difficulty
Changing perspective may create a risk of:
Guessing.
Imagination replacing memory.
Confusion about what was personally observed.
The witness reporting what another person probably saw.
The interviewer should remind the witness:
Report only details based on your memory of the event, and say when you are uncertain.
This technique should not encourage speculation.
Comparing the four techniques
Technique | What the witness does | Why recall may improve |
Report everything | Gives every remembered detail | Minor details may cue associated memories |
Reinstate the context | Mentally recreates the original surroundings and internal state | Restores cues present during encoding |
Change the order | Recalls events in a different sequence | Disrupts expectations and provides alternative retrieval routes |
Change the perspective | Considers the event from another viewpoint | Encourages access to overlooked details and reduces reliance on one schema |
Do all four techniques work in the same way?
No.
The techniques use different psychological principles.
Context reinstatement focuses on retrieval cues.
Reporting everything uses associations between details.
Changing order disrupts scripts and expectations.
Changing perspective provides another way of organising the memory.
They share the aim of increasing access to stored information.
The enhanced cognitive interview
What is the enhanced cognitive interview?
The enhanced cognitive interview, or ECI, adds communication and social techniques to the original cognitive interview.
The quality of an interview depends not only on memory techniques but also on the relationship between the witness and interviewer.
The enhanced interview may involve:
Building rapport.
Reducing the witness’s anxiety.
Minimising distractions.
Allowing pauses.
Avoiding unnecessary interruptions.
Using open questions.
Speaking clearly and appropriately.
Adapting the interview to the witness.
Allowing the witness greater control over the account.
Listening actively.
Building rapport
Rapport is a cooperative and trusting relationship between the interviewer and witness.
A witness who feels comfortable may be:
More willing to provide detail.
Less afraid of making a mistake.
More willing to admit uncertainty.
Better able to concentrate.
Less distracted by the interviewer’s behaviour.
Rapport should not involve the interviewer showing approval for particular answers.
That could influence testimony.
Reducing anxiety
An interview itself may create anxiety.
A witness might worry about:
Being disbelieved.
Giving an incorrect answer.
Being judged.
Remembering a distressing event.
The possible consequences of their evidence.
Excessive anxiety may interfere with concentration and retrieval.
This links with the complex effects of arousal on witness accuracy.
A calm interview environment may help the witness focus on the retrieval task.
Minimising distractions
Interruptions may break the witness’s concentration and retrieval.
The interviewer should reduce:
Background noise.
People entering the room.
Unnecessary questions.
Frequent interruptions.
Rapid changes of topic.
The witness may require time to search their memory.
A pause does not necessarily mean that they have finished.
Witness control
In an ordinary interview, the interviewer may dominate the sequence of questions.
The enhanced cognitive interview gives the witness greater opportunity to:
Set the pace.
Complete an answer.
Return to an earlier detail.
Describe events in their own words.
Indicate when a question is unclear.
Say when they do not know.
This can reduce the risk that the interviewer imposes their own version of events.
Open and closed questions
An open question allows a witness to give a detailed answer in their own words.
For example:
“Tell me everything you remember about the person.”
A closed question restricts the possible response.
For example:
“Was the coat black?”
Closed questions may sometimes be needed to clarify a detail, but they risk restricting recall or becoming leading.
The interviewer should begin with open prompts and avoid questions that suggest an expected answer.
How the cognitive interview is intended to improve recall
More retrieval cues
A memory can be accessed through several routes.
For example, a witness might remember an offender through:
The place where they stood.
A sound heard at the time.
The order of events.
The offender’s movement.
An object nearby.
If one route fails, another may succeed.
The cognitive interview deliberately increases the number of retrieval routes.
Greater quantity of information
Reporting everything encourages witnesses to provide details they might otherwise censor.
A witness may withhold information because it:
Seems irrelevant.
Appears too obvious.
Is incomplete.
Feels uncertain.
The CI reduces this self-editing.
This may increase the amount of potentially useful information available to investigators.
Reduced influence of schemas
A schema is a mental framework developed from previous experience.
Schemas help people interpret events, but they can also distort memory.
A witness may remember:
What usually happens in a robbery.
Rather than every detail of this particular robbery.
Changing order and perspective can reduce reliance on the witness’s usual schema.
Improved communication
The enhanced interview encourages:
Careful listening.
Rapport.
Appropriate questioning.
Fewer interruptions.
Witness-centred recall.
This creates conditions in which the witness may retrieve more information without being unnecessarily influenced by the interviewer.
Quantity is not the same as accuracy
An important distinction is between:
Recalling more information.
Recalling more correct information.
A useful interview should increase accurate detail without producing an unacceptable rise in incorrect information.
Evaluation must therefore consider:
Number of correct details.
Number of incorrect details.
Proportion of recalled details that are accurate.
Investigative usefulness of the information.
Research support from Fisher and colleagues
Fisher and colleagues trained detectives to use cognitive interview techniques.
The detectives conducted interviews in genuine investigations.
Following training, the detectives obtained substantially more useful information than before training or than detectives using standard interview methods.
A commonly reported finding is that trained detectives obtained approximately 47% more useful information.
Why this supports the cognitive interview
The research suggests that the CI:
Can be taught to real police officers.
Works beyond a university laboratory.
Produces information relevant to real investigations.
Has practical value for eyewitness interviewing.
This gives the findings greater ecological validity than a study using only student participants and filmed events.
Limitations of the evidence
Police officers who receive training may also:
Become more motivated.
Spend longer interviewing witnesses.
Pay more attention to communication.
Expect the new technique to work.
The improvement may not result entirely from the four cognitive techniques.
However, the findings still suggest that structured training can improve police interviewing.
Evidence from research reviews
Research reviews comparing cognitive and standard interviews generally find that the CI produces more correct information.
Köhnken and colleagues reviewed a number of studies and found that cognitive interviews produced substantially more correct details than standard interviews.
A commonly reported average increase is approximately 34% more correct information.
Strength of a meta-analysis
A meta-analysis combines the findings of several studies.
This can provide a more reliable conclusion than relying on one investigation because:
A larger overall sample is considered.
Findings from different procedures can be compared.
The overall pattern is less dependent on one unusual result.
Consistent effects across studies strengthen confidence.
Possible increase in errors
The same research indicates that cognitive interviews can also produce a small increase in incorrect details.
This matters because an investigator needs accurate evidence, not simply a longer account.
A balanced conclusion is:
The cognitive interview usually increases correct recall, but it may also increase the opportunity for some incorrect information to be reported.
The increase in correct information is generally much larger than the increase in errors.
Are all four techniques equally useful?
Research by Milne and Bull investigated the effectiveness of individual cognitive interview components.
Their findings suggest that:
Reporting everything can improve recall.
Context reinstatement can improve recall.
Combining these two techniques can be particularly effective.
This suggests that some components may contribute more reliably than others.
Implication
Police officers may not need to use every component in every interview.
The most appropriate techniques may depend on:
The witness.
The event.
The time available.
The witness’s age.
The complexity of the incident.
The witness’s emotional state.
However, removing techniques without appropriate training could reduce the effectiveness of the overall interview.
Strengths of the cognitive interview
It is based on psychological theory
The cognitive interview applies established principles of memory retrieval.
For example:
Context reinstatement applies encoding specificity.
Reporting everything uses associations between memories.
Changing order and perspective reduce schema-driven recall.
The enhanced interview recognises the importance of communication.
This gives the technique a clear theoretical foundation.
Research generally supports its effectiveness
Controlled studies and research involving police interviews usually find that the CI produces more correct information than standard interviewing.
This suggests that the method has measurable benefits rather than relying only on intuition.
It has practical applications
The CI was developed to improve real eyewitness interviews.
Better recall may help investigators:
Identify suspects.
Locate physical evidence.
Establish a timeline.
Find additional witnesses.
Check other accounts.
Generate new lines of enquiry.
Psychological research therefore has a direct application to the justice system.
It reduces unnecessary interviewer influence
The CI encourages:
Open questions.
Witness-led recall.
Fewer interruptions.
Reporting uncertainty.
Avoidance of suggestion.
This may reduce some risks associated with leading questions.
However, an interviewer can still introduce bias if the technique is used poorly.
It recognises that memory is complex
The CI does not treat memory as a simple recording that can be accessed through one direct question.
It acknowledges that:
Retrieval depends on cues.
Different routes may access different details.
Expectations can distort recall.
Communication affects performance.
This provides a more psychologically informed approach.
Limitations of the cognitive interview
It is time-consuming
A full cognitive interview usually takes longer than a standard interview.
Time is needed to:
Establish rapport.
Explain the procedure.
Reinstate the context.
Allow uninterrupted recall.
Repeat recall using different orders or perspectives.
Clarify details carefully.
Police investigations may involve:
Many witnesses.
Limited staff.
Urgent decisions.
Competing demands.
A technique that works well but takes substantially longer may not always be practical.
Interviewers require training
The CI is not simply a checklist of four instructions.
Interviewers need to know how to:
Build rapport appropriately.
Avoid leading questions.
Listen without interrupting.
Judge when to use each technique.
Manage uncertainty.
Prevent speculation.
Adapt the method to different witnesses.
Training takes time and money.
Poorly trained interviewers may use only parts of the technique or apply them incorrectly.
Police may omit some components
Research suggests that police officers do not always use all four techniques.
They may prefer:
Context reinstatement.
Reporting everything.
They may avoid:
Changing perspective.
Changing order.
These components can feel:
Complicated.
Time-consuming.
Confusing for witnesses.
Difficult to fit naturally into an interview.
This means the effectiveness found in controlled research may not always transfer to everyday police practice.
Changing perspective may encourage speculation
Asking a witness to recall the event from another viewpoint may blur the distinction between:
What the witness observed.
What they imagine another person observed.
This could introduce:
Guesses.
Inferences.
Confabulation.
Source-monitoring errors.
The interviewer must remind the witness not to invent information.
Changing order can increase cognitive demand
Recalling an event backwards or from several starting points requires mental effort.
This may be difficult for:
Young children.
Some older adults.
People with cognitive impairments.
Witnesses who are distressed.
Witnesses recalling a very complex event.
The technique designed to improve recall could instead create confusion if it is not adapted appropriately.
More information can include more errors
Encouraging a witness to report every detail increases the total amount of information.
This may include:
Correct details.
Uncertain details.
Incorrect details.
Inferences.
Information acquired after the event.
Investigators must assess the reliability of each detail rather than assuming that a fuller account is automatically more accurate.
Difficult to identify the active component
The full cognitive interview contains several techniques.
The enhanced version also includes social and communication features.
If an interview improves recall, it may be difficult to determine whether the improvement was caused by:
Context reinstatement.
Reporting everything.
Changed order.
Changed perspective.
Rapport.
Extra interview time.
Reduced interruption.
Greater interviewer motivation.
This makes it difficult to isolate the most effective element.
Laboratory research may lack realism
Some studies use participants who:
Watch short films.
Observe staged incidents.
Know that they are safe.
Expect a memory test.
Face no legal consequences.
Real eyewitnesses may experience greater:
Anxiety.
Personal involvement.
Delay before questioning.
Exposure to misleading information.
Pressure to be accurate.
Laboratory findings may not fully represent genuine criminal investigations.
Real-world research has less control
Studies using real police interviews have greater ecological validity.
However, witnesses and events cannot be standardised.
Differences may include:
Seriousness of the offence.
Time since the event.
Witness motivation.
Interview length.
Interviewer experience.
Quality of the original view.
This makes it harder to establish that the cognitive interview alone caused improved recall.
The cognitive interview and other EWT factors
Leading questions
The cognitive interview encourages open, neutral prompts.
This reduces the risk that an interviewer introduces information through suggestive wording.
However, the CI cannot remove misleading information a witness has already received through leading questions.
Post-event discussion
A witness may already have spoken to:
Other witnesses.
Friends.
Family.
Journalists.
Context reinstatement could retrieve both:
Original information.
Information acquired later.
The interviewer should therefore ask the witness to distinguish what they personally observed from what they later heard.
Anxiety
A calm and supportive interview may reduce anxiety during retrieval.
However, the CI cannot change the level of anxiety experienced during the original event.
If high anxiety reduced the encoding of peripheral details, no interview technique can retrieve information that was never stored.
This is an important limitation.
Retrieval failure
Context reinstatement is most likely to help when:
Information was encoded.
It remains stored.
The problem is a lack of suitable cues.
It will not create a memory that was never formed.
This distinguishes retrieval support from simply increasing pressure on the witness to answer.
Applying the cognitive interview
Example scenario
Darius witnesses a person take a bag from a café. He remembers the theft but struggles to describe the offender.
A police interviewer could use the CI as follows.
Reinstate the context
The officer asks Darius to imagine:
Where he was sitting.
The café layout.
The sounds and smells.
What he was doing immediately before the theft.
How the offender entered.
These cues may help retrieve details about the offender.
Report everything
Darius is encouraged to mention every detail, including:
A logo on the offender’s clothing.
The music playing.
A conversation nearby.
The direction in which the offender looked.
One of these details may cue further recall.
Change the order
Darius recalls the event starting from the offender leaving and works backwards towards their arrival.
This may reveal a detail omitted from the original account.
Change perspective
Darius considers how the event looked from the counter area, while reporting only information based on his memory.
This may draw attention to the offender’s movements near the till.
A strong application answer
A developed application should:
Name the technique.
Use a specific detail from the scenario.
Explain what the interviewer would ask the witness to do.
Explain why this may improve recall.
Weak application
The officer should reinstate the context so Darius remembers more.
Stronger application
The officer could ask Darius to imagine where he was sitting, the café layout and what he heard immediately before the bag was taken. Recreating cues that were present when the event was encoded may help him retrieve additional details from long-term memory.
Applying report everything
Darius should be encouraged to report the logo on the offender’s clothing even if he thinks it is unimportant. The detail may be useful itself or may act as a cue for further information.
Applying changed order
The officer could ask Darius to begin with the offender leaving and work backwards. This disrupts his usual narrative and may help him access details omitted from the original forward account.
Applying changed perspective
Darius could consider how the scene appeared from near the counter. This may provide another way of organising the memory, although he should avoid guessing what the cashier personally saw.
Evaluating usefulness
Effectiveness
The available evidence suggests that the cognitive interview usually increases the number of correct details recalled.
This supports its use when investigators need a full eyewitness account.
Accuracy
The CI may also produce a small increase in errors.
Interviewers must therefore record:
Confidence.
Uncertainty.
Source of information.
Whether a detail was directly observed.
Whether the witness is making an inference.
Efficiency
The technique requires more time and specialist training.
Its usefulness may therefore depend on whether the likely benefits justify the resources required.
Suitability
The full procedure may not be appropriate for every witness.
Interviewers may need to adapt it for:
Children.
Older witnesses.
Distressed witnesses.
Witnesses with communication difficulties.
People recalling complex or traumatic events.
Overall judgement
The cognitive interview is useful because it is theoretically based, supported by research and relevant to real police work.
Its usefulness is greatest when:
The interviewer is properly trained.
Questions remain neutral.
The witness is given time.
Techniques are adapted appropriately.
Accuracy is prioritised over merely increasing detail.
It is less useful when it becomes a rigid checklist or encourages imagination and guessing.
Planning an extended answer
A strong discussion answer could follow this structure:
Define the cognitive interview.
Describe reporting everything.
Describe context reinstatement.
Describe changing order.
Describe changing perspective.
Explain the enhanced cognitive interview.
Use research evidence supporting improved recall.
Discuss the possibility of additional errors.
Evaluate time and training requirements.
Consider whether all components are equally effective.
Reach a balanced judgement about practical usefulness.
Hints from the Examiner Reports đź’ˇ
Examiner hint:Â In an application question, do not merely list the four techniques. Explain exactly how each technique could be used with the witness in the scenario.
Examiner hint:Â Use examples from the scenario. For context reinstatement, identify particular features the witness could mentally recreate, such as the location, weather or activity taking place.
Examiner hint:Â When explaining report everything, state that apparently trivial details may act as cues or provide useful investigative information.
Examiner hint:Â Changing order means recalling the event in a different sequence. It does not simply mean that the interviewer changes the order of their questions.
Examiner hint: Changing perspective should be applied carefully. The witness considers another viewpoint but should not invent details or claim to know another person’s thoughts.
Examiner hint:Â Answers may cover all four techniques briefly or develop fewer techniques in greater depth, depending on the question and number of marks.
Examiner hint: Features of the enhanced cognitive interview can gain credit when they are clearly linked to improving the witness’s recall.
Examiner hint:Â Evaluation should consider both quantity and accuracy. Producing more information is only beneficial if most of the additional information is correct.
Common Mistakes ⚠️
Mistake: Describing the cognitive interview as hypnosis
Why this is incorrect:
The CI uses retrieval and communication techniques rather than an altered state of consciousness.
How to improve:
Refer to context, multiple retrieval routes and witness-centred questioning.
Mistake: Listing the four techniques without explanation
Why this is incomplete:
A description should explain what the witness is asked to do.
How to improve:
Give a brief example and state why each technique may improve recall.
Mistake: Saying report everything means the witness should guess
Why this is incorrect:
Witnesses should report uncertain details but identify their uncertainty. They should not invent information.
How to improve:
Distinguish incomplete recall from speculation.
Mistake: Confusing context reinstatement with returning to the scene
Why this is incorrect:
The context is usually recreated mentally.
How to improve:
Refer to imagining the surroundings, thoughts and feelings present during the event.
Mistake: Saying context reinstatement improves storage
Why this is incorrect:
The event has already been stored by the time of the interview.
How to improve:
Explain that reinstated cues improve retrieval from long-term memory.
Mistake: Saying changing order means rearranging questions
Why this is incorrect:
The witness recalls the event itself in a different sequence.
How to improve:
Use an example such as beginning with the offender leaving and working backwards.
Mistake: Treating changed perspective as mind-reading
Why this is incorrect:
The witness cannot know another person’s private thoughts or memories.
How to improve:
Focus on what the scene might have looked like from another location, based on the witness’s own memory.
Mistake: Assuming more detail means greater accuracy
Why this is incorrect:
Additional information can include both correct and incorrect details.
How to improve:
Evaluate the number and proportion of accurate details.
Mistake: Giving generic support from research
Why this is incomplete:
Writing that “research shows it works” lacks evidence and analysis.
How to improve:
Explain that trained interviewers obtained more useful or correct information than standard interviewers.
Mistake: Ignoring practical limitations
Why this matters:
A technique can be effective in research but difficult to use routinely.
How to improve:
Discuss interview length, training costs and incomplete use by police officers.
Mistake: Claiming that the CI can recover every memory
Why this is incorrect:
It cannot retrieve information that was never encoded.
How to improve:
State that the technique improves access to information that remains stored.
Mistake: Confusing the original and enhanced interviews
Why this is incorrect:
The original CI contains four cognitive techniques. The enhanced version adds communication and social features.
How to improve:
Identify rapport, witness control and reduced interruptions as enhanced features.
Exam-Style Questions ✍️
Question 1
Which one of the following is a technique used in the cognitive interview?
A. Asking a witness the same leading question repeatedly
B. Encouraging the witness to report every detail
C. Allowing co-witnesses to produce a shared account
D. Showing the witness possible answers before recall
[1 mark]
reveal mark scheme and indicative content
Answer: B. Encouraging the witness to report every detail
Question 2
Outline what is meant by context reinstatement in the cognitive interview.
[2 marks]
reveal mark scheme and indicative content
Mark scheme
AO1 = 2
2 marks:Â Clear outline referring to mentally recreating the environmental and/or personal context of the witnessed event.
1 mark:Â Limited or partial outline.
Indicative content
Witness mentally returns to the original situation.
They may recall surroundings, weather, sounds, thoughts or feelings.
Reinstating cues may trigger additional memories.
Example answer
Context reinstatement involves asking a witness to mentally recreate the situation in which the event occurred, including features of the environment and how they felt at the time, to provide cues that may help retrieval.
AQA explicitly credits reminders of environmental details such as weather and surroundings, including links to the encoding specificity principle.
Question 3
Explain how changing the order of recall may improve an eyewitness’s account.
[3 marks]
reveal mark scheme and indicative content
Mark scheme
AO1 = 3
Award 1 mark each for:
The witness recalls the event in a different order, for example backwards.
This may disrupt expectations or the influence of schemas about how the event should have happened.
It can encourage more careful retrieval and make additional details available.
Example answer
The witness could recall the event backwards rather than from beginning to end. This disrupts the influence of expectations or schemas about the usual sequence of events and may help the witness retrieve details that were missed during normal chronological recall.
AQA specifically credits changing order because it may disrupt the influence of schemas and expectations.
Question 4
A witness tells a police officer:
“I remember a song playing in the shop, but that probably is not important.”
Explain how the officer should respond using the report-everything technique.
[4 marks]
reveal mark scheme and indicative content
Mark scheme
AO2 = 4
Award 1 mark each for:
The officer should encourage the witness to report everything.
The witness should report the song even though it seems unimportant.
Apparently trivial details may act as cues for other memories.
The officer should avoid filtering or deciding in advance which details are relevant.
Example answer
The officer should encourage the witness to report the song because the report-everything technique requires witnesses to give every detail, even if it seems irrelevant. Remembering the song might act as a cue that triggers recall of other information about what was happening in the shop.
AQA's mark scheme explicitly credits reporting details even if they appear irrelevant because they may trigger additional information.
Question 5
Sofia witnessed a robbery while standing outside a railway station on a cold, busy evening.
Explain how a police officer could use context reinstatement to help Sofia recall the event.
[4 marks]
reveal mark scheme and indicative content
Mark scheme
AO2 = 4
Award 1 mark each for:
Asking Sofia to mentally return to the railway station.
Encouraging her to recall the cold temperature.
Encouraging her to recreate the busy surroundings, sights or sounds.
Explaining that reinstating these contextual cues may trigger further memories of the robbery.
Example answer
The officer could ask Sofia to imagine herself back outside the railway station. She could think about how cold the evening felt and recreate the busy surroundings, including the people and sounds around her. These contextual details may act as retrieval cues and help her remember more about the robbery.
The importance of applying cognitive interview techniques directly to details in the scenario is also emphasised in AQA examiner feedback.
Question 6
Explain one difference between the original cognitive interview and the enhanced cognitive interview.
[3 marks]
reveal mark scheme and indicative content
Mark scheme
AO1 = 3
1 mark:Â Accurate feature of the original cognitive interview.
1 mark:Â Accurate additional feature of the enhanced cognitive interview.
1 mark:Â Clear explicit difference.
Indicative content
The supplied AQA mark scheme accepts strategies from the enhanced cognitive interview, although it does not list those additional strategies in detail. Â In the standard psychological account:
The original cognitive interview focuses on techniques such as context reinstatement, report everything, changing order and changing perspective.
The enhanced cognitive interview additionally focuses on improving communication between interviewer and witness, for example building rapport and adapting questioning to the witness.
Example answer
The original cognitive interview uses memory-retrieval techniques such as context reinstatement and changing the order of recall. The enhanced cognitive interview adds techniques designed to improve communication, such as building rapport and making the interview more suited to the individual witness.
Question 7
A witness remembers the start of an assault but has difficulty recalling what happened immediately before the offender left.
Explain how changing order and changing perspective could be used to improve the witness’s recall.
[6 marks]
reveal mark scheme and indicative content
Mark scheme
AO2 = 6
Award up to 3 marks for each technique.
Changing order
Ask the witness to recall events in a different sequence.
For example, begin with the offender leaving and work backwards towards the beginning.
This may disrupt schema-driven recall and help retrieve details immediately before the offender left.
Changing perspective
Ask the witness to mentally recall the event from another viewpoint.
For example, consider what might have been visible from the position of another person present.
This can encourage a different retrieval route and prompt details not accessed during the first recall.
Example answer
The officer could ask the witness to change the order of recall by starting with the offender leaving and working backwards towards the beginning of the assault. This may disrupt expectations about the normal sequence and help recover details immediately before the offender left. The witness could also recall the event from another perspective, such as that of another person who was present. This may provide a different way of accessing the memory and trigger additional details.
Both changing order and changing perspective are explicitly accepted cognitive interview techniques in AQA marking guidance.
Question 8
A police force compared interviews completed before and after officers received cognitive interview training.
Interview method | Mean correct details | Mean incorrect details |
Standard interview | 21.4 | 2.1 |
Cognitive interview | 31.8 | 3.0 |
Describe the pattern shown in the results. Explain one conclusion the police force could draw about the usefulness of the cognitive interview.
[6 marks]
reveal mark scheme and indicative content
Mark scheme
AO2/AO3 = 6
Award up to 3 marks for describing the pattern and 3 marks for an explained conclusion.
Indicative content
Pattern
Correct details increase from 21.4Â with the standard interview to 31.8Â with the cognitive interview.
Incorrect details also increase, from 2.1 to 3.0.
The increase in correct information is much larger than the increase in incorrect information.
Conclusion
The cognitive interview appears useful for increasing the quantity of accurate information recalled.
However, it does not guarantee perfect accuracy because incorrect details also increase.
Overall usefulness should therefore consider both the amount and accuracy of information recalled.
Example answer
The cognitive interview produced more correct details than the standard interview, increasing from 21.4 to 31.8. However, incorrect details also increased slightly from 2.1 to 3.0. The police force could conclude that the cognitive interview is useful because it produces substantially more correct information, although the increase in errors shows that additional recall is not always accurate.
Question 9
Outline one strength and one limitation of the cognitive interview as a method of improving eyewitness testimony.
[6 marks]
reveal mark scheme and indicative content
Mark scheme
AO3 = 6
Award up to 3 marks for the strength and 3 marks for the limitation.
Indicative content
Strength
Cognitive interview techniques can increase the amount of information recalled.
Techniques such as context reinstatement provide additional retrieval cues, while report everything can reveal details that witnesses might otherwise omit.
This has clear practical usefulness for police investigations.
Limitation
Increasing the quantity of information does not necessarily mean that every additional detail is accurate.
For example, the results in Question 8 show an increase in both correct and incorrect details.
Therefore, information obtained using the cognitive interview still needs to be checked against other evidence.
Example answer
One strength is that the cognitive interview can increase the amount of useful information obtained from witnesses. Techniques such as context reinstatement provide retrieval cues, while report everything encourages witnesses not to omit potentially valuable details, making the technique useful in police investigations.
One limitation is that producing more information does not guarantee that all of it will be accurate. A cognitive interview may increase incorrect as well as correct details, so eyewitness information still needs to be corroborated with other evidence.
AQA marking guidance supports the usefulness of these techniques for triggering additional recall, while also expecting students to explain how techniques improve recall rather than merely naming them
Question 10
Discuss the usefulness of the cognitive interview as a technique for improving eyewitness recall.
[16 marks]
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