{"type":"rich","version":"1.0","provider_name":"Transistor","provider_url":"https://transistor.fm","author_name":"Psych Attack","title":"29. Organised / disorganised typology of serial killers: A statistics deep dive on the 1986 study","html":"<iframe width=\"100%\" height=\"180\" frameborder=\"no\" scrolling=\"no\" seamless src=\"https://share.transistor.fm/e/3789e7dd\"></iframe>","width":"100%","height":180,"duration":3539,"description":"Are you a true crime enthusiast but an even bigger research methods nerd? I see you. If you have watched Mindhunters, read Silence of the Lambs, or are an old school Criminal Minds fan then you already know this study and this team of researchers. In the 1980s a team of FBI agents and researchers teamed up to advance what we knew about serial sexual offenders (serial killers).In this episode, Dr Monsurul Hoq and I nerd out on the research methods and statistical analysis used in the first peer-reviewed research article that compared crime scene characteristics for organised and disorganised serial killers.The beauty of this episode is the practical application of statistical methods. We talk about statistical power, alpha inflation, p-hacking, the obsession with p = .05 (conventions in determining statistical significance), and the importance of subject matter expertise and clinical / practical significance.The paper this episode focuses onRessler, R.K., Burgess, A.W., Douglas, J.E., Hartman, C.R., & D’Agostino, R.B. (1986). Sexual Killers and Their Victims: Identifying patterns through crime scene analysis. Journal of Interpersonal Violence, 1(3), 288-308. https://doi.org/10.1177/088626086001003003 [not open access]About Dr Monsurul HoqDr Monsurul Hoq has 10 years’ experience as a Biostatistician in medical and health research (in prevention and cure of common childhood illness, transgender health, vaccine uptake, paediatric reference intervals, disability, and mental health), leading, consulting, and performing statistical analysis of data, interpreting findings and reporting results. Prior to working in academia, Monsurul Hoq worked in non-government organisations in Bangladesh and South Sudan, monitoring and evaluating integrated community-based projects in education and child health sector.Monsurul completed his PhD in Biostatistics at the University of Melbourne. His research established continuous age-specific reference intervals for blood biomarkers in...","thumbnail_url":"https://img.transistorcdn.com/JZE3qWt6XEK_Jb5qnXnTgMiHvzdc4nUwqqj2rVl6TBs/rs:fill:0:0:1/w:400/h:400/q:60/mb:500000/aHR0cHM6Ly9pbWct/dXBsb2FkLXByb2R1/Y3Rpb24udHJhbnNp/c3Rvci5mbS80YzFk/MWYwYjY4MDFlZjAw/ZGVjMWZjMzIzOTA4/NDhiNC5wbmc.webp","thumbnail_width":300,"thumbnail_height":300}