Psykologi
Brain scans link larger striatum to psychopathic traits, study finds
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MRI scans of 120 adults in the United States found that people with higher psychopathic traits had a striatum—an area involved in reward and motivation—that was about 10% larger on average than those with few or no such traits, according to a study in the Journal of Psychiatric Research.
A Vogue article explores the emotional challenges of receiving unwanted clothes from mothers ahead of Mother's Day.
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New research from a major twin project suggests that genes play a larger role in determining education, career, and income than family environment alone. The findings come from tracking participants from age 23 to 27 and highlight the strong genetic link to IQ. Experts say the results challenge assumptions about how much upbringing can override inherited traits.
Astrocytes—star-shaped glial cells long cast mainly as support staff for neurons—appear to actively shape how fear memories are learned, recalled and weakened, according to a mouse study published in Nature. The work suggests these cells help sustain the neural activity patterns that underlie fear expression, a finding that researchers say could eventually inform new approaches to anxiety-related disorders.
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Researchers from the University of Pennsylvania have identified 'cognitive surrender,' where people outsource reasoning to AI without verification. In experiments, participants accepted incorrect AI responses 73.2 percent of the time across 1,372 participants. Factors like time pressure increased reliance on flawed outputs.
A recent study indicates that left-handed individuals may have an edge in competitive situations, while right-handed people are better at cooperation. This finding challenges evolutionary expectations about handedness. Researchers explore why around 10 percent of humans remain left-handed despite potential survival disadvantages.
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Israeli sports psychologist Nimrod Mon Brokman is working with Lakshya Sen at the All England Badminton Championships. His unconventional methods, such as cycling under hypoxic conditions, are aiding Sen’s semifinal run. Mon praises Sen’s temperament of laughing in the face of challenges.
Study finds infrasound can raise cortisol and irritability even when people can’t hear it
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