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quadrant

n.

1. one of four divisions of a two-dimensional x–y plot of psychological variables. The quadrants correspond to positive scores on both dimensions (upper right corner of plot), negative scores on both dimensions (lower left corner of plot), and positive scores on one dimension and negative scores on the other dimension (upper left corner and lower right corner, respectively, of the plot).

2. one of four divisions of the visual field.

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Psychology term of the day

February 24th 2025

Cockayne syndrome

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]