This study examined how manipulations of likeability and knowledge affected mock jurors’ perceptions of female and male expert witness credibility (N=290). Our findings extend the person perception literature by demonstrating how warmth and competence overlap with existing conceptions of likeability and credibility in the psycholegal domain. We found experts high in likeability and/or knowledge were perceived equally positively regardless of gender in a death penalty sentencing context. Gender differences emerged when the expert was low in likeability and/or knowledge; in these conditions the male expert was perceived more positively than the comparable female expert. Although intermediate judgments (e.g., perceptions of credibility) were affected by our manipulations, ultimate decisions (e.g., sentencing) were not. Implications for theory and practice are discussed.

Aside from an article by Gutheil, Bursztajn, Hilliard, and Brodsky (2004), scant literature exists regarding why forensic mental health professionals refuse or withdraw from cases. The current study collected descriptive information about the reasons mental health experts decline or withdraw from forensic assessments, both early and late in the legal process. In response to an online survey, 29 practicing forensic psychologists and psychiatrists presented examples of case withdrawal from their professional experiences. Their major reasons included ethical issues or conflicts, payment difficulties, and interpersonal or procedural problems with retaining counsel or evaluees. The results indicate that there are compelling personal and professional reasons that prompt forensic mental health experts to withdraw from or turn down cases.

Despite advances in the scientific methodology of witness testimony research, no sound measure currently exists to evaluate perceptions of testimony skills. Drawing on self-efficacy and witness preparation research, the present study describes development of the Observed Witness Efficacy Scale (OWES). Factor analyses of a mock jury sample yielded a two-factor structure (Poise and Communication Style) consistent with previous research on witness self-ratings of testimony delivery skills. OWES subscales showed differential patterns of association with witness credibility, witness believability, agreement with the witness, and verdict decision. Juror gender moderated the impact of Communication Style, but not Poise, on belief of and agreement with the witness. Results are discussed with attention to application of the OWES to witness research and preparation training.

This report integrated quantitative and qualitative methods across two studies to compile descriptive information about forensic psychologists’ occupational socialization processes. We also explored the relation between occupational socialization and forensic psychologists’ objectivity. After interviewing 20 board-certified forensic psychologists, we surveyed 334 forensic psychologists about their socialization into the field. Results indicated that the occupational socialization processes of forensic psychologists, including socialization about objectivity, varied widely across time and situation as the field has developed. Moreover, three hypotheses regarding occupational socialization were supported. It was positively and significantly associated with years of experience, t(284) = 3.63, p < 0.001, 95% CI = 0.05 – 0.16; belief in one’s ability to be objective, t(296) = 9.90, p < 0.001, 95% CI = 0.69 – 1.03; and endorsement of the usefulness of various bias correction strategies, r = 0.38 (p < .001, one-tailed). The implications of these results and directions for future research are discussed.

This review of women’s participation in the legal system as expert witnesses examines the empirical literature on the perceived credibility and persuasiveness of women compared to men experts. The effects of expert gender are complex and sometimes depend on the circumstances of the case. Some studies find no differences, some find favorable effects for women and others for men, and still others find that expert gender interacts with other circumstances of the case. The findings are interpreted through social role theory (Eagly, 1987) and the role incongruity theory of prejudice (Eagly & Karau, 2002, Eagly & Koenig, 2008). Future directions for research are identified and implications are considered for attorneys who select and prepare expert witnesses. Suggestions for men and women’s behavior as expert witnesses are provided.

Examinations of trust have advanced steadily over the past several decades, yielding important insights within criminal justice, economics, environmental studies, management and industrial organization, psychology, political science, and sociology. Cross-disciplinary approaches to the study of trust, however, have been limited by differences in defining and measuring trust and in methodological approaches. In this chapter, we take the position that: 1) cross-disciplinary studies can be improved by recognizing trust as a multilevel phenomenon, and 2) context impacts the nature of trusting relations. We present an organizing framework for conceptualizing trust between trustees and trustors at person, group, and institution levels. The differences between these levels have theoretical implications for the study of trust and that might be used to justify distinctions in definitions and methodological approaches across settings. We highlight where the levels overlap and describe how this overlap has created confusion in the trust literature to date. Part of the overlap – and confusion – is the role of interpersonal trust at each level. We delineate when and how interpersonal trust is theoretically relevant to conceptualizing and measuring trust at each level and suggest that other trust-related constructs, such as perceived legitimacy, competence, and integrity, may be more important than interpersonal trust at some levels and in some contexts. Translating findings from trust research in one discipline to another and collaborating across disciplines may be facilitated if researchers ensure that their levels of conceptualization and measurement are aligned, and that models developed for a particular context are relevant in other, distinct contexts.

Since its debut over a century ago, forensic psychology has matured into a formally recognized specialty area of psychology with its own set of ethical guidelines; however, a consensual definition of forensic psychology remains elusive. After describing the field’s historical and current struggles to define itself, two ethical issues are discussed that are especially applicable to psychology in legal contexts. The first is the critical differences between serving in therapeutic versus forensic roles and the associated ethical obligation to refrain from serving in both roles in the same case. Despite the terminology used in the literature, treatment in forensic contexts can be ethically appropriate. This chapter considers the current state of the literature regarding treatment in forensic contexts and suggests that this is likely to be an area of future growth for the field. The second ethical issue discussed in this chapter is the insidious effect of the adversarial process on psychologists’ objectivity in forensic contexts, termed “forensic identification” or “adversarial allegiance.” The forensic ethical guidelines affirm the primacy of this issue in forensic contexts, as evidenced by addressing it in the first two published guidelines. However, field and experimental evidence suggest psychologists have a challenging (if not impossible) task in avoiding partiality in adversarial forensic contexts. The chapter ends by briefly considering the methods psychologist might use in an effort to reduce partiality and by recognizing more research is needed to identify what else psychologists can do to strive to uphold the ethical guidelines in this regard.

The effect of eye contact on credibility was examined via a 3 (low, medium, high eye contact) x 2 (male, female) between-groups design with 232 undergraduate participants. A trial transcript excerpt about a defendant’s recidivism likelihood was utilized as the experts’ script. A main effect was found: experts with high eye contact had higher credibility ratings than in the medium and low conditions. Although a confound precluded comparisons between the genders, results indicated that males with high eye contact were more credible than males with medium or low eye contact. The female experts’ credibility wasn’t significantly different regardless of eye contact. Eye contact may be especially important for males: male experts should maintain eye contact for maximum credibility.

This study sought to investigate the relation between expert witness likeability and juror judgments of credibility and sentencing. Two actors playing expert witnesses were trained to present themselves as high and low in likeability in a standard testimony scenario involving capital trial sentencing. The effects of extraversion and gender in mock jurors in attending to expert testimony were also examined. The dependent variables were the perceptions of the witnesses’ credibility and agreement with testimony and the participants were 210 psychology undergraduates. Likeability of expert witnesses was found to be significantly related to judgments of trustworthiness of the experts, but not related to confidence or knowledge of the experts or to the mock juror sentencing decisions. Women participants rated high likeable experts as more credible than low likeable experts; men did not. For men jurors, agreement with testimony increased as extraversion increased. However, for women jurors, agreement with testimony decreased as extraversion increased. The results suggest that likeability can be an important element of source credibility, and that attorneys and trial consultants now have an empirical foundation for addressing likeability as part of witness preparation.