Forensic Psychology – Criminal Profiling, Eyewitness Testimony & Rehabilitation
Forensic psychology applies psychological theories to criminal behaviour, investigations, and rehabilitation. This topic covers criminal profiling, eyewitness testimony, cognitive biases in the legal system, and offender rehabilitation programs. Whether you're studying AQA, OCR, Edexcel, or Eduqas, mastering AO1 (knowledge), AO2 (application), and AO3 (evaluation) in forensic psychology is key to exam success. Let’s break it down into key theories, studies, and exam-ready content.
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How to Navigate This Page:
We use the 👉 icon to highlight important insights:
👉 Exam Tips – Guidance on how topics appear in A-Level exams.
👉 Key Discoveries & Impacts – Groundbreaking findings that shaped psychology.
👉 Real-World Applications – How these concepts are used in everyday life.
👉 Critical Thinking Prompts – Questions to help you develop higher-order thinking.

Core Explanations – The Foundations of Forensic Psychology
1️⃣ Criminal Profiling: How Psychologists Assist Investigations
Criminal profiling is used to narrow down suspect lists and predict offender characteristics.
There are two main approaches:
  • Top-Down Profiling (FBI Method) – Based on pre-existing categories of organised vs. disorganised offenders.
  • Bottom-Up Profiling (Investigative Psychology & Geographical Profiling) – Uses data-driven analysis to detect patterns in behaviour.
👉 Exam Tip: Be ready to compare top-down and bottom-up profiling in AO3 evaluation questions.


2️⃣ Eyewitness Testimony (EWT): How Reliable is Memory?
Eyewitness testimony is used as evidence in court, but memory is reconstructive and influenced by external factors.
  • Leading Questions (Loftus & Palmer, 1974) – The way a question is framed affects memory recall.
  • Post-Event Discussion (Gabbert et al., 2003) – Witnesses may incorporate false details from others.
  • Weapon Focus Effect (Johnson & Scott, 1976) – Presence of a weapon can distract attention from the perpetrator.
👉 Exam Tip: Expect AO2 questions on factors affecting EWT accuracy and cognitive interview techniques.


​3️⃣ Offender Rehabilitation: Can Criminals Be Reformed?
​Psychologists help design programs to reduce reoffending rates and rehabilitate offenders.
  • Behavioural Modification (Token Economy Systems) – Rewards reinforce prosocial behaviour in prison.
  • Cognitive Treatments (Anger Management) – Helps offenders recognise and control aggression.
  • Restorative Justice – Victims and offenders meet to repair harm and promote accountability.
👉 Exam Tip: Be prepared to evaluate the effectiveness of rehabilitation programs in AO3 questions.

Mother of Invention – How John Duffy’s Case Shaped Criminal Profiling
Psychologists David Canter and Paul Britton developed criminal profiling techniques based on behavioural patterns in the John Duffy case.

​👉 Discovery: Canter’s bottom-up profiling approach helped police accurately predict the offender’s background.
👉 Impact: Led to the development of Investigative Psychology as a scientific approach.
👉 Exam Tip: Use this case study in AO2 questions on criminal profiling effectiveness.

Exam Relevance – How Forensic Psychology Appears in A-Level Exams
Forensic psychology is assessed through AO1 (knowledge), AO2 (application), and AO3 (evaluation). Expect questions on criminal profiling, eyewitness testimony, and rehabilitation methods.

  • AO1 – Knowledge: Explain criminal profiling, EWT factors, and offender rehabilitation techniques.
  • AO2 – Application: Apply theories to real-life criminal cases and forensic investigations.
  • AO3 – Evaluation: Strengths (scientific methods, real-world applications) vs. weaknesses (ethical issues, reliability of profiling).

📌 Past Exam Questions:
  • "Evaluate the effectiveness of criminal profiling in investigations (16 marks)."
  • "Discuss factors affecting eyewitness testimony (16 marks)."

​👉 Key to success: Always use research studies to back up your points.

Model Exam Question & Answer
Question: "Evaluate the reliability of eyewitness testimony in legal cases (16 marks)."

Model Answer Breakdown:

  • AO1 (Knowledge - 6 marks)
    • Eyewitness testimony (EWT) can be influenced by leading questions, post-event discussion, and anxiety.
    • Loftus & Palmer (1974): Found that language affects recall accuracy.
    • Weapon Focus Effect: Witnesses focus on the weapon, reducing facial recognition accuracy.
  • AO2 (Application - 4 marks)
    • Example: Miscarriages of justice (e.g., Ronald Cotton case) due to inaccurate EWT.
    • Application: Cognitive interviews improve recall by reducing leading questions.
  • AO3 (Evaluation - 6 marks)
    • Strength: Research supports memory malleability, showing the need for careful police questioning.
    • Weakness: Lab studies (e.g., Loftus) lack real-life emotional stakes, affecting reliability.
    • Real-world application: Improved interview techniques in criminal investigations.

​👉 Exam Tip: High-mark answers always include research evidence & evaluation.

Key Studies & Research
Canter et al. (2004) – Investigative Psychology & Criminal Profiling
  • Found that offenders’ behaviours are consistent across crimes, allowing profiling.
  • AO3: Strengthened profiling methods, but not always accurate in real cases.

Loftus & Palmer (1974) – Leading Questions & Eyewitness Memory
  • Showed that wording affects recall (e.g., "smashed" vs. "hit" changes speed estimates).
  • AO3: Supports memory malleability, but lacks ecological validity (lab study).

Zimbardo (1971) – The Stanford Prison Experiment
  • Demonstrated how situational factors influence criminal behaviour.
  • AO3: Ethical concerns, but highlights the power of social roles in crime.

​👉 Exam Tip: Use studies as evidence for AO1 & AO3, linking them to forensic psychology topics.

Reflective Practice & Evaluation
✅ Strengths of Forensic Psychology:
  • Applies psychology to real-world crime investigations.
  • Improves justice system accuracy (e.g., cognitive interviews, profiling).

​❌ Weaknesses of Forensic Psychology:
  • Reliability issues – Criminal profiling is not always accurate.
  • Ethical concerns – Misuse of forensic psychology could lead to wrongful convictions.

👉 Critical Thinking Question: "Can psychology ever make criminal investigations completely reliable?"

Explore Psychology Tutoring - For Support, Guidance and Success
​Click the link below to schedule a free 30-minute call. We’ll discuss your learning style, syllabus, study challenges, and tutoring goals to see if we’re the right fit. Once booked, you’ll receive a confirmation email with the meeting details for a Zoom session.

FIELD TRIP: Bedlam & The James Norris Case – Madness or Mistreatment?

🔍 Was James Norris a dangerous madman—or a victim of psychiatric cruelty?

Step inside Bethlem Royal Hospital (Bedlam) and uncover one of the most shocking mental health scandals in history. James Norris, a lucid yet heavily restrained patient, was chained to a wall for over a decade—a discovery that forced the UK government to investigate the brutal reality of psychiatric care.

💡 What you’ll explore:
✔ Psychopathology in action – What does Norris’ case reveal about historical diagnoses of mental illness?
✔ Social control or patient care? – Debate whether asylums were about treatment or punishment.
✔ The Ethics of Institutionalisation – What happens when power goes unchecked in mental health care?

📍 A-Level Relevance: Linked to Psychopathology, Institutionalisation, Social Influence & Ethics in Psychology across AQA, OCR, Edexcel & Eduqas.