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n. the controversial theory that racial differences in IQ are at least partly heritable and that attempts to raise IQ through environmental interventions have been largely unsuccessful. [Arthur R. Jensen]

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Psychology term of the day

June 18th 2024



n. a type of involuntary movement caused by a rapid succession of alternate muscular contractions and relaxations. Although some forms of clonus, such as hiccups, are considered normal, most such movements are abnormal; for example, clonus occurs as part of a tonic–clonic seizure. More severe forms are associated with spinal cord damage, poisoning (e.g., from strychnine), or an infection (e.g., syphilis).