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XYY syndrome

 a chromosomal abnormality where there are three sex chromosomes. People who possess this abnormality are males who are of above average height with typically low levels of fertility. There used to be considerable interest in the possible links between this condition and aggressive behaviour, although this has never been proven.

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Psychology term of the day

July 28th 2021

behavioural therapy

 a form of treatmentthat aims to change behaviour by means of systematic desensitisation, behaviour modification, or aversiontherapy.