chiasmal syndrome

loss of visual acuity and abnormalities of the visual field associated with damage to the optic chiasm and the adjacent optic nerve or optic tract. Typical features are bitemporal hemianopia and optic atrophy. The majority of cases are caused by brain tumors.

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Psychology term of the day

December 26th 2024

factor method

any means by which latent variables (factors) are extracted or identified in factor analysis. Widely used factor methods include principal components analysis, which seeks to find a set of linear combinations called components that help explain the correlations among variables; and principal-axis factor analysis, in which underlying dimensions or factors are sought to explain the correlations among variables after separating out communality and putting aside the error variance in a set of variables.