Kretschmer typology

a controversial classification of individuals based on a “clear biological affinity” between specific physiques and specific personality tendencies. According to this classification, the short, stocky pyknic type tends to be jovial and subject to mood swings; the frail asthenic type is likely to be introversive and sensitive; the muscular athletic type is usually energetic and aggressive; and the disproportioned dysplastic type presents a combination of traits but tends toward the asthenic. These tendencies were attributed to endocrine secretions. [formulated in the 1920s by German psychiatrist Ernst Kretschmer (1888–1964)]

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Psychology term of the day

December 27th 2024

wavelength

n. the distance between successive peaks in a wave motion of a given frequency, such as a sound wave or a wave of electromagnetic radiation. The wavelength is equal to the speed of propagation of the wave motion divided by its frequency.