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Background: Klinefelter's syndrome is a sex chromosome abnormality affecting approximately 1 in 1000 men. There have been suggestions that it is associated with a higher than average prevalence of sexual offending but to what extent does research evidence support this assertion?Aims: This study aimed to conduct a systematic review of published research to establish the prevalence of sexual offending in men with Klinefelter's syndrome.Method: The databases MEDLINE, PsycINFO and EMBASE were searched from inception until 31 December 2016 by using a range of terms for Klinefelter's syndrome and for sexual offending. All selected papers were examined for quality by using the Strengthening the Reporting of Observational Studies in Epidemiology checklist.Results: We identified 53 relevant papers of which 10 met our inclusion criteria. All but one were prevalence studies conducted in a prison or hospital setting. The one, Danish, register-based cohort study did suggest an increased risk of sex offending among Klinefelter men, probably established before the diagnosis was made and, therefore, any hormone replacement instituted.Conclusion: There is insufficient evidence to date to support concerns about exceptional risk of sex offending among men with Klinefelter's syndrome. Rather, it is arguable that there is a research gap in understanding how the experience of and treatment for their condition may affect them. Copyright © 2017 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

Background: This paper examines some of the major topics that legal psychology began to focus on at the end of the last century.Aim: The purpose is to contend that such topics (the reliability of ear-witness testimony, the conducting of identification parades/line ups, the interviewing of suspects, the interviewing of vulnerable witnesses/victims) are deserving of greater attention in this new century.Conclusions: Legal psychologists should be brave enough to research with methodological rigour complex, real-world topics of importance to society and to advise relevant professional groups on how to improve their performance. [ABSTRACT FROM AUTHOR]