https://phys.org/ en-us Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. A psychological assessment test often used to evaluate psychopathy in Canadian criminal cases is unreliable and prone to unconscious bias on the part of expert witnesses, according to research from the University of Toronto Mississauga. https://phys.org/news/2026-02-psychopathy-canadian-courts-unreliable-prone.html Social Sciences Mon, 09 Feb 2026 19:20:04 EST news689857529 When you start to notice them, psychopaths seem to be everywhere. This is especially true of people in powerful places. By one estimate, as many as 20% of business leaders have "clinically relevant levels" of psychopathic tendencies—despite the fact as little as 1% of the general population are considered psychopaths. Psychopaths are characterized by shallow emotions, a lack of empathy, immorality, anti-social behavior and, importantly, deceptiveness. https://phys.org/news/2023-02-psychopaths-theyve-evolutionary-historyand.html Social Sciences Mon, 13 Feb 2023 12:30:01 EST news595511253 A life sentence in many states rarely means offenders will spend a lifetime behind bars. In fact, offenders sentenced for murder served just 15 years on average before initial release from state prison, according to a recent Bureau of Justice Statistics report using national-level data. https://phys.org/news/2018-12-criminal-history-strong-indicator-future.html Social Sciences Tue, 18 Dec 2018 14:06:42 EST news464364394 When you hear the term "psychopath," you probably picture Charles Manson or Jeffrey Dahmer. Psychologists, however, define it as a personality trait, and we all fall somewhere along a scale from low to high levels of psychopathy. https://phys.org/news/2018-01-flourishing-abusive-boss-psychopath.html Economics & Business Tue, 23 Jan 2018 17:10:36 EST news435949826 It's been a puzzle why our two closest living primate relatives, chimpanzees and bonobos, have widely different social traits, despite belonging to the same genus. Now, a comparative analysis of their brains shows neuroanatomical differences that may be responsible for these behaviors, from the aggression more typical of chimpanzees to the social tolerance of bonobos. https://phys.org/news/2011-04-chimp-bonobo-social-brain.html Plants & Animals Tue, 05 Apr 2011 11:32:19 EDT news221221873