PSYC 403 Lecture Notes - Lecture 11: Psychometrics, Psychophysics, Eugenics

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Lecture 11 psychometrics, psychophysics and medical discoveries. Individual differences in skills, talents and personality traits: sir francis galton 1884 the 1st intelligence test. A. binet 1905, d. wechsler 1934: the manifestations of intelligence in the speed and acuity of sensory and motor responses, the comparative studies and correlations. The scores vs. real life career (questionnaires applied) Correlating data to explore the heredity of talents. Statistical analysis co-relations and their measurement chiefly from anthropological data 1888: correlation coefficient a mean cross-product of the standardized z-scores. Raw scores on scale a & b transformed into za, zb as a mean deviation on each scale, e. g. , Weight zb = (bi b) n standard scores r = (za x zb) n. The strength: between 0 and 1: and more contributions to modern psychology. The word association method: eugenics a prototype of selective breeding and genetic engineering. Positive eugenics non-discriminatory, promoting: criteria of intelligence. The speed of processing of information and fast response.

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