“Criminal psychology” is a broad field that overlaps with several subareas of psychology, including correctional (applications to prison settings) and forensic (applications in courtroom settings) psychology. A widely used umbrella term, “psychology-law,” also reflects the interdisciplinary commitment of researchers in criminal psychology, who draw from many traditional domains of psychology, including clinical (e.g., assessment, treatment), social (how people and contexts influence us), cognitive (how we think and make decisions), developmental (how we grow and change), and neuropsychology (the biological basis of behavior). This chapter – covering research in criminal psychology – emphasizes the shared reliance on scientific methods characteristic of modern psychology.

This chapter integrates from cognitive neuroscience, cognitive psychology, and social psychology the basic science of bias in human judgment as relevant to judgments and decisions by forensic mental health professionals. Forensic mental health professionals help courts make decisions in cases when some question of psychology pertains to the legal issue, such as in insanity cases, child custody hearings, and psychological injuries in civil suits. The legal system itself and many people involved, such as jurors, assume mental health experts are “objective” and untainted by bias. However, basic psychological science from several branches of the discipline suggest the law’s assumption about experts’ protection from bias is wrong. Indeed, several empirical studies now show clear evidence of (unintentional) bias in forensic mental health experts’ judgments and decisions. In this chapter, we explain the science of how and why human judgments are susceptible to various kinds of bias. We describe dual-process theories from cognitive neuroscience, cognitive psychology, and social psychology that can help explain these biases. We review the empirical evidence to date specifically about cognitive and social psychological biases in forensic mental health judgments, weaving in related literature about biases in other types of expert judgment, with hypotheses about how forensic experts are likely affected by these biases. We close with a discussion of directions for future research and practice.

Prison rape is a pervasive and serious problem affecting many male inmates in U.S. prisons. This paper reviews the literature on prison rape prevalence, victimization risk factors, and the psychological and non-psychological sequelae of prison rape. We address several areas of inquiry needed to guide research and facilitate solutions to the problem of prison rape, especially given the context and intent of the Prison Rape Elimination Act (PREA) passed in 2003 by the U.S. Congress. Mental health correlates remain to be studied; for example, the complex post-rape symptoms of prison rape survivors do not appear to be captured by current diagnostic nomenclature. To date, psychology has been largely silent on the issue of prison rape but may have much to offer in terms of describing and treating the psychological impact of victimization, documenting the personal and situational risk and protective factors associated with prison rape, and in designing programs and policy to reduce prison rape.