Scratching through the negative emotions

Published on February 10, 2025

‘We feel sorry because we cry,’ wrote philosopher and psychologist William James, ‘angry because we strike, afraid because we tremble,’ suggesting that emotional bodily responses like crying cause cognitive changes, such as feelings of sorrow. However, research has shown that human bodily responses and cognitive shifts affect each other in both directions. We feel sorry because we cry, but also cry when feeling sorry. So how then for our primate cousins? To date, their connections have remained largely unexplored. Now a team of researchers has led a study on six Japanese macaques. The researchers focused on self-scratching — a bodily response linked to negative emotions like anxiety and fear — and its relationship to pessimistic judgment bias, which is the tendency to expect a negative outcome when faced with ambiguous information.

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