Types of Assessment Measures in Forensic Psychology: The Three Assessment Measure Domains

What is at the heart of a good forensic psychology report? How do you make your reasoning visible and your forensic opinions defensible? What should you do when the data conflicts with your initial conclusions? In this episode, Dr. Casey Mangnall explores how to write clear, defensible forensic psychology reports by making the reasoning behind expert opinions visible. She discusses how to connect data to conclusions, evaluate competing explanations, address inconsistencies in the evidence, and use AI appropriately in forensic report writing.

What actually has to go into a forensic report? In what way does the value of a good forensic report show itself? How do you move from data to inference and the psycholegal question? In this episode, I discuss the fundamentals of effective forensic report writing, including how to move from data to inference and answer the psycholegal question. I explain why a good forensic report prioritises relevance over length, how to structure a report so that the reader immediately understands its purpose, and why it is essential to distinguish assessment findings from professional interpretations. I also share best practices for presenting test results clearly, communicating complex information in plain language, and ensuring that every part of the report serves a meaningful purpose.

Are you using an assessment instrument for the purpose it was designed to answer? What happens when a test doesn't fully represent the population you're evaluating? How do you prepare your materials to be reviewed in court? In this episode, Dr. Casey Mangnall explores the ethical considerations psychologists need to navigate when conducting forensic evaluations. She explains why assessment instruments must be used for purposes supported by research, and why psychologists need to consider whether a test is valid and reliable for the specific population they are evaluating. Dr. Mangnall also discusses the growing use of computer-assisted reporting and AI tools, emphasizing that psychologists remain responsible for understanding how tests are scored, how results are interpreted, and whether conclusions are actually supported by the data. The conversation also examines the tension between protecting psychological test materials and the transparency expected by the courts.

How do you know whether the methods you're using in a forensic evaluation will hold up in a legal setting? Can you confidently explain why you chose a particular test? What happens when clinical best practices and legal standards require you to think beyond the way you would approach a traditional evaluation? In this episode, I discuss the legal guidelines that forensic psychologists need to consider when conducting evaluations. I explore how forensic work differs from traditional clinical practice, including the importance of being able to justify test selection, understand scientific foundations, and apply methods appropriately. I also discuss Frye and Daubert standards, the Federal Rules of Evidence, statutes, and case law, and why understanding the specific legal requirements of each evaluation is essential.

What fundamentally changes when psychological evaluations need to answer a legal question? When the person sitting across from you is not technically your client, how does that reshape your role, responsibilities, and ethical obligations as a psychologist? Why is a diagnosis alone rarely enough?