Psychology

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MRI scans comparing normal and enlarged striatum in brains related to psychopathic traits study
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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.

New research indicates that conversational AI can strengthen false beliefs and distorted thinking in users. The findings come from a study examining how chatbots interact with people experiencing delusions or conspiracy theories. Researchers highlight risks especially for those who are isolated or vulnerable.

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A Vogue article explores the emotional challenges of receiving unwanted clothes from mothers ahead of Mother's Day.

What people expect to be drinking can sway how much they enjoy sweet beverages—sometimes more than the drink’s actual ingredients—according to a new experiment that paired taste ratings with brain imaging. Researchers reported that anticipating sugar increased activity in a reward-linked midbrain region even when the drink contained an artificial sweetener.

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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.

A new study challenges the belief that closing one's eyes improves hearing in noise, finding it actually hinders detection of faint sounds. Researchers from Shanghai Jiao Tong University showed that relevant visual cues enhance auditory sensitivity instead. The findings were published in The Journal of the Acoustical Society of America.

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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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