Topic F: Criminological psychology A2

Syllabus
2026
Topic
Level
A2

Learning objectives

6.1.1Explanations for crime and anti-social behaviour6.1.1 Social and personality explanations for crime and anti-social behaviour:; self-fulfilling prophecy; social learning from the media; antisocial personality disorder (ASPD).; Understanding the offender.6.1.2Cognitive interview techniques6.1.2 Cognitive interview techniques with witnesses.6.1.3Psychological formulation of offending behaviour6.1.3 The use of psychological (case) formulation to understand the function of offending behaviour in the individual.; Factors influencing identification of offenders.6.1.4Reliability of eyewitness memory6.1.4 Factors influencing the reliability of eye-witness memory:; post-event information; weapons focus; 'other race' effect; stress and trauma.6.1.5Factors influencing jury decision-making6.1.5 Factors influencing jury decision-making:; characteristics of the defendant, including attractiveness and race; pre-trial publicity; research into expert testimony including Penrod and Cutler (1989) Eyewitness Expert Testimony and Jury Decision Making.; Treatment.6.1.6CBT for offenders6.1.6 Cognitive Behavioural Therapy (CBT) as a therapy for offenders:; using CBT as a therapy for offenders; effectiveness of CBT as a therapy for offenders.6.2.1Loftus and Palmer (1974) eyewitness memory6.2.1 Loftus and Palmer (1974) Reconstruction of auto mobile destruction: An example of the interaction between language and memory.; Contemporary study.6.2.2Bradbury and Williams (2013) race and juror decision making6.2.2 Bradbury M D and Williams M R (2013) Diversity and Citizen Participation: The Effects of Race on Juror Decision Making.; One contemporary study from the following two choices:.6.2.3Ruva et al. (2007) pre-trial publicity and jury bias6.2.3 Ruva, McEvoy and Bryant (2007) Effects of pre-trial publicity and jury deliberation on jury bias and source memory errors.6.2.4Valentine and Mesout (2009) eyewitness stress6.2.4 Valentine T and Mesout J (2009) Eyewitness identification under stress in the London Dungeon.6.3.1Research methods in criminological psychology6.3.1 The use of research methods in psychology when carrying out research in criminological psychology:; research methods from units 1 and 2 as appropriate, related to criminological psychology; experiments as used in the study of eye witness memory; mock jury research as a method for studying jury decision-making.6.3.2BPS ethics and risk management6.3.2 Ethical guidelines:; British Psychological Society (BPS) Code of Ethics and Conduct (2009); risk management when carrying out research in psychology.6.3.3Decision making and data interpretation6.3.3 Decision making and interpretation of data:; List A from Topic A as appropriate; List B from Topic B as appropriate.6.3.4Criminological research evaluation6.3.4 Evaluation of research in criminological psychology:; issues of reliability, validity, generalisability, credibility, objectivity, subjectivity, ethics and practical application of findings as appropriate.

Why crime and anti-social behaviour may develop

Crime breaks the law; anti-social behaviour causes harassment, alarm or distress but is not always criminal. Three syllabus explanations locate the cause in social expectations, observed models or a diagnosed personality pattern.

Explanation Proposed process Important boundary
self-fulfilling prophecy a person is labelled, internalises the expectation and behaves in ways that confirm it many people reject labels, and a label-behaviour correlation does not prove the label caused offending
social learning from media attention, retention, ability to reproduce and motivation make imitation possible; an attractive or similar model and vicarious reward increase it exposure does not guarantee imitation, and correlational media evidence cannot remove selection or other causes
antisocial personality disorder (ASPD) a clinically assessed pattern of disregard for others, deceit, impulsivity or aggression can raise offending risk; brain-function differences may contribute ASPD is neither a synonym for criminality nor a diagnosis that makes offending inevitable

A violent media character who gains status without punishment may provide a model and vicarious reinforcement. By contrast, repeatedly treating a young person as a troublemaker could shape identity and opportunities until behaviour confirms the label. These are different mechanisms, even when they predict the same act.

An explanation identifies a possible pathway, not a complete cause or excuse. Biological disposition, learning, labels and circumstances can interact, so evidence for one account does not automatically disprove the others.

How the cognitive interview supports witness recall

The cognitive interview uses retrieval cues and varied routes into memory to increase what a witness can recall without supplying the missing details.

Its four core techniques are: (1) mentally reinstate the physical and emotional context; (2) report every detail, even if it seems trivial; (3) recall events in a different order; and (4) recall from another perspective. The interviewer first builds rapport, invites uninterrupted free recall and then uses open, non-leading prompts.

Context reinstatement recreates cues that were present during encoding. Reporting everything can let one minor detail cue another memory. Changing order reduces reliance on a familiar schema, while a different perspective may open another retrieval route. None of these techniques licenses guessing: the witness should distinguish remembered information from inference.

Controlled comparisons such as Geiselman et al. found more correct information than standard interviews, although some studies also record slightly more incorrect detail. The method takes time, requires specialist training and depends on rapport and careful delivery; a poorly trained interviewer can introduce demand or confusion.

Case formulation: explaining the function of offending

A psychological case formulation is a collaborative, individual explanation of how an offender's history, current circumstances, thoughts, emotions and triggers may combine to produce and maintain offending.

The psychologist gathers detailed information about past and current relationships, significant life events, the person's interpretation of those events, present difficulties and patterns around offences. Relevant professionals, such as medical or probation staff, may contribute. The material is reduced to a concise set of hypotheses that the offender can check and help refine.

A formulation asks what function the behaviour serves for this person—for example, whether aggression follows a perceived threat or whether substance use increases risk. Those hypotheses guide an individual treatment and risk-management plan, identify likely future triggers and give the team propositions that can be revised when new evidence appears.

A formulation is not a diagnosis, a factual biography or a prediction of guilt. Its holistic and personalised focus can improve relevance, but selection of information is partly subjective, multidisciplinary work is costly, and usefulness depends on training, offender engagement and whether the hypotheses actually improve outcomes.

Four pressures on eyewitness memory

Eyewitness memory is reconstructed, so reliability depends on what was attended to during the event and what happens before retrieval.

Factor How reliability may change Boundary
post-event information leading questions, co-witness discussion or media reports can become integrated with the original memory and create source errors vivid real events can sometimes resist later suggestion
weapon focus attention is captured by a threatening or unusual object, leaving fewer resources for the offender's face and peripheral detail the effect depends on threat, unusualness and context, not merely the presence of any object
other-race effect less expertise in distinguishing faces from a less familiar racial group can increase false identification positive, frequent cross-race contact can reduce the effect; it is not an inability fixed by race
stress and trauma moderate arousal may focus attention, while very high arousal can narrow it and impair encoding or retrieval central threat details may be vivid even when peripheral or identification detail is weak

Reliability is therefore detail-specific. A witness may remember the weapon or central action accurately yet misidentify the person, or may confidently report a detail acquired from later news. Confidence alone does not reveal the source or accuracy of a memory.

These factors alter probability; they do not make every eyewitness account false. Interview method, delay, lineup procedure and corroborating evidence must be considered before judging a particular identification.

Why juries may be influenced beyond trial evidence

Jury decisions can be affected by defendant characteristics, information encountered before trial and the way eyewitness expertise is presented, even though verdicts should be based on admissible evidence.

Influence Possible route to a verdict Evidence boundary
attractiveness a positive halo can make some defendants seem more credible or less blameworthy the effect can depend on offence type and does not apply uniformly
defendant race stereotypes and in-group/out-group processing may change credibility or conviction judgments racial composition is entangled with case, jurisdiction and social context; a group result is not a trait of every juror
pre-trial publicity negative reports can create a schema, source-memory error or lasting impression before evidence is heard instructions to disregard publicity may help but cannot guarantee its source is separated
expert eyewitness testimony explanation of memory limits can change how jurors evaluate confidence and identification evidence jurors may defer to expertise, and mock-trial effects may not transfer intact to court

Penrod and Cutler (1989) compared mock jurors who did or did not see eyewitness-expert testimony in a videotaped trial, using psychology students and experienced jurors. Manipulating the testimony supports a controlled comparison, but a recorded trial, student participation and the absence of real consequences restrict ecological and population validity.

A demonstrated influence shows possible bias, not that jurors ignore evidence or that one factor determines a verdict. The case evidence, deliberation and legal safeguards remain competing influences.

CBT for offenders: changing thought-action patterns

Cognitive Behavioural Therapy helps an offender identify the thoughts and interpretations that precede harmful action, test them and practise safer responses.

With a trained therapist, the offender maps triggers, thoughts, emotions, behaviour and consequences. Cognitive restructuring challenges biased or distorted interpretations; role play rehearses alternative responses; diaries and between-session tasks reveal recurring patterns. The aim is to build self-management skills that remain usable after formal sessions end.

If an ambiguous comment is interpreted as deliberate disrespect, anger and assault may follow. CBT slows that chain: examine the evidence for the interpretation, consider a less hostile explanation, and rehearse leaving, asking for clarification or using another non-aggressive response.

Meta-analytic evidence such as Lipsey's review suggests well-implemented CBT can reduce further offending, but outcomes vary with programme quality, offence type, completion and follow-up period. Howells et al. found no significant reduction in aggression in one offender context. Coercion, low commitment and unaltered poverty, housing or peer risks can limit transfer.

Loftus and Palmer: language reconstructs a crash

Loftus and Palmer (1974) tested whether wording after an event changes a speed judgment and can become part of the remembered event.

In Experiment 1, 45 students watched seven traffic-accident films and estimated speed after a question using smashed, collided, bumped, hit or contacted. Mean estimates followed verb intensity: 40.5 mph for smashed and 31.8 mph for contacted, with hit at 34.0 mph. The wording changed the report even though the films did not.

In Experiment 2, 150 participants saw one crash film. Fifty received smashed, 50 hit and 50 no speed question. One week later, 16, 7 and 6 respectively said they had seen broken glass, although none appeared. This supports integration of original event information with later verbal information.

Standard clips, controlled wording and quantitative outcomes make the procedure replicable and strengthen causal inference. Yet students watching brief films and completing questionnaires do not experience a real crash's emotion or responsibility; repeated questions may also reveal the aim. The study demonstrates susceptibility under these conditions, not that every real memory is rewritten.

Bradbury and Williams: jury composition and conviction

Bradbury and Williams (2013) used real court records to examine whether the racial composition of juries was associated with decisions in trials involving Black defendants.

They re-analysed secondary data from 2000-2001 felony trials in Maricopa County, Los Angeles, the Bronx and Washington, D.C. Cases had Black defendants and juries that either convicted or failed to reach a verdict. Conviction on any charge counted as conviction; acquittal and a hung jury were coded no. Jury percentages by racial group were analysed alongside case type and prosecution strength.

A higher percentage of White jurors and a higher percentage of Hispanic jurors were each associated with a greater likelihood of convicting Black defendants. Conviction was less likely for violent than drug charges and marginally less likely for property than drug charges. These are conditional patterns in the analysed records, not evidence that race alone caused a verdict.

Real trials provide ecological validity and practical relevance beyond a mock jury. However, secondary data restrict control, jurisdictions and selected defendants limit generalisability, and unmeasured influences such as publicity or juror experience can confound the association.

Ruva et al.: publicity, deliberation and source errors

Ruva, McEvoy and Bryant (2007) tested how negative pre-trial publicity (PTP) and jury deliberation affect verdicts, impressions and memory for where information came from.

The 558 university students first read either negative PTP about a defendant or matched unrelated crime articles. About four days later they watched an edited 30-minute recording of a real murder trial and made initial judgments. Some then deliberated in mock juries of four to six; nominal participants continued individually. Everyone later completed source monitoring, distinguishing trial material from publicity.

PTP-exposed jurors gave higher guilt and confidence measures, recommended longer sentences and more often treated publicity-only information as if it had also appeared at trial. Deliberation reduced some guilty-judgment bias and collaborating jurors made more accurate source-monitoring responses, yet collaboration also changed credibility judgments and did not remove every PTP effect.

Matched materials and a common trial strengthen control and replication. The student sample, edited trial, small mock juries and absence of real consequences restrict generalisation. The safest conclusion is that negative publicity can bias decisions partly through source-memory error, while deliberation has mixed rather than uniformly corrective effects.

Valentine and Mesout: anxiety during real witnessing

Valentine and Mesout (2009) examined whether state anxiety during a naturally stressful encounter was associated with poorer recall and identification.

Fifty-six London Dungeon visitors encountered the same costumed actor in the Horror Labyrinth. Afterwards they completed a state-anxiety measure, freely and then cued-recalled the actor, and attempted identification from a nine-person target-present photograph lineup. A separate validation sample showed that heart rate rose in the labyrinth and covaried with state-anxiety scores.

Visitors reporting higher state anxiety recalled fewer correct details. In the high-anxiety half, 5 identified the actor accurately, 15 chose inaccurately and 8 made no identification; the low-anxiety half produced 21, 6 and 1 respectively. Expressed as the study did, correct identification was 17% above the median anxiety score versus 75% below it.

A real attraction improves ecological validity, and consistent actor and lineup procedures support comparison. However, anxiety was measured rather than randomly assigned, visitors self-selected, and a target-present photo lineup differs from many police lineups. The data show a strong association, not proof that anxiety alone caused every error.

Choosing methods for criminological psychology

A criminological method is useful only when its design supports the intended inference about memory, offenders or juries.

Method What it can test Main trade-off
laboratory experiment on eyewitness memory manipulate wording, delay, stress cue or weapon presence while controlling the viewed event stronger causal inference and replication, but an artificial event and low personal stakes
field or natural experiment examine memory around a more realistic event or setting greater ecological validity, but weaker control and possible ethical risk
mock jury standardise evidence, publicity or testimony and compare verdicts or deliberation isolates influences, but small juries, volunteers and consequence-free decisions may not represent court
interviews, questionnaires or case records gather experience, treatment change or real-case associations rich or ecologically valid data, but self-report, selection, access and confounding limit causal claims

A strong design operationalises the IV and DV, selects a relevant sample, standardises what should be constant, records reliability and anticipates demand characteristics, researcher effects and social desirability. Ruva's matched publicity packets aid control; Bradbury and Williams gain realism from court records but cannot manipulate jury composition.

Calling a procedure an experiment or a mock trial does not make its conclusion causal or realistic. Evaluate the exact manipulation, controls, measurement and sample against the claim being made.

BPS ethics and risk management in criminological research

The BPS Code of Ethics and Conduct (2009) organises ethical judgment around respect, competence, responsibility and integrity; criminological research must translate these values into concrete controls.

Duty Criminological application
informed consent and withdrawal explain the real choice to participants, especially when prisoners, treatment requirements or authority relationships could make refusal feel impossible
privacy and confidentiality minimise identifying trial, offence, victim and health data; store it securely and report it without exposing people
protection from harm screen distressing crash or violence material, monitor reactions, stop when necessary and provide appropriate debrief/support
competence and integrity use trained interviewers or therapists, avoid leading witnesses, declare limits and do not exaggerate a finding's legal meaning

Risk management identifies hazards to participants, researchers and others; estimates likelihood and severity; reduces risk through setting, staffing, stopping rules, data security and emergency procedures; and records residual risk against the study's value. Prison interviews may require safe rooms and staff protocols without destroying confidentiality.

Consent alone does not make a study ethical, and public court information is not automatically harmless to republish. Ethics requires a proportionate, continuing judgment before, during and after data collection.

From criminological data to a statistical decision

Interpretation starts with the research question and measurement level, then separates description of this sample from an inferential decision.

Job Appropriate tools
describe centre and spread (List A) mean, median or mode; range or standard deviation; percentages, ratios and fractions
organise and display (List A) frequency/summary tables, bar charts for categories, histograms for continuous distributions and scatter diagrams for co-variables; inspect normality, skew and impossible values
choose inference (List B) Wilcoxon for a related difference, Spearman's rank for an association using at least ordinal paired data, and chi-squared for suitable frequency differences/associations
make the decision (List B) choose directional or non-directional test, significance level and critical value before comparing it with the observed value

rs=16d2n(n21)r_s = 1 - \frac{6\sum d^2}{n(n^2-1)}

For CBT sessions attended and aggressive incidents, Spearman's rank is suitable because the hypothesis concerns association and paired scores can be ranked. A significant result rejects the null at the chosen level; it does not establish causation or practical importance. Type I error rejects a true null, while Type II error retains a false null.

Always sense-check calculations, direction and graph. A small p-value is a probability statement under the null—not the probability that the research hypothesis is true.

Evaluating criminological research through its inference

Evaluation should show how a specific design feature changes the conclusion that can reasonably be drawn, rather than listing generic strengths and weaknesses.

Criterion Question to ask Topic F example
reliability would consistent procedures or coding give a similar result? Loftus and Palmer standardised clips and questions; real jury records are harder to reproduce
validity does the task measure real witnessing or juror judgment, and is the causal interpretation controlled? a mock trial controls testimony but lacks real consequences
generalisability does the sample represent the target people and settings? students or four US jurisdictions cannot represent all witnesses or courts
credibility/objectivity is the evidence transparent, corroborated and minimally dependent on judgment? quantitative verdicts aid objectivity, while a formulation still involves professional selection
ethics were autonomy, privacy, harm and power managed? prisoners may feel unable to refuse and traumatic material may cause distress
practical application can the bounded result safely improve practice? non-leading cognitive interviews or publicity safeguards may help, but require training and outcome checks

For Ruva, matched articles and a common trial support internal comparison, whereas student mock juries limit court generalisation. For Valentine and Mesout, a real stressful setting improves ecological validity, while the correlational design prevents anxiety being isolated as the cause. The same feature can strengthen one inference and weaken another.

A limitation narrows a claim; it does not automatically erase the evidence. Finish by stating exactly what remains justified and what further design or evidence would be needed.