quartimax rotation

in factor analysis, an orthogonal rotation that maximizes the variance across the rows of the factor matrix by raising the loadings to the fourth power; the effect is to make large loadings especially large and small loadings especially small. The objective is to increase the interpretability of a factor solution by satisfying the simple structure ideal.

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Psychology term of the day

February 24th 2025

Cockayne syndrome

a hereditary disorder characterized by microcephaly, dwarfism, premature aging, severe photosensitivity, hearing loss, and moderate to severe learning delays. There are three types: Type 1 (Type A) is diagnosed during early childhood; Type 2 (Type B) is a more severe form in which growth and developmental abnormalities are present at birth; and Type 3 (Type C) is a milder form of the disorder. Individuals with Type 1 or 2 usually do not survive past childhood, whereas those with Type 3 live into adulthood. [reported in 1936 by Edward Alfred Cockayne (1880–1956), British physician]