By Gordon Claridge

Character changes and organic diversifications: A learn of Twins info a examine aimed to find the genetic strong point of twins and the organic foundation in their person transformations.
Coverage of the publication contains the main points of the venture – its goals, strategy, its theoretical heritage, pattern choice and the outline of the pattern; character features in twins the sociability/impulsivity and the Foulds hostility scale; and the effect of age and separation. The booklet additionally covers a few features of cognitive functionality in twins – divergent considering and the research of its measures; conceptual pondering; and the connection of character and cognitive functionality. The publication additionally comprises twins' physiological measures; their sedative drug tolerance; and a anxious typological research in their own variaton.
The textual content is usually recommended for psychologists who desire to examine extra and research approximately how twins imagine and the way they get in addition to each other.

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Extra resources for Personality Differences and Biological Variations. A Study of Twins

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As a result of a number of factor analytic studies Guilford has emerged with a number of factors important in divergent thinking, such as fluency, flexibility, originality, analysis and synthesis, and evaluation. A large number of tests have been proposed to measure these factors, the test content being of a semantic, figurai, or symbolic type. F o r the purpose of the present study five tests only were chosen in an attempt to measure the three factors of fluency, flexibility and originality and to cover both semantic and figurai content.

In an interesting extension of their study of creativity Wallach and K o g a n (op. ) found a tendency for creativity as measured by psychometric tests to be associated with an unconventional and free type of response on the Goldstein Scheerer object sorting test. This kind of response is also c o m m o n in some types of schizophrenic patient given the latter test (Payne and Hewlett, 1960). Divergent thinking The term creative thinking has been used a number of times throughout the previous discussion, but it would be unwise to conclude that we have as yet developed any " t r u e " measures of this ability.

Soc. clin. Psychol. 2 , 4 6 - 5 5 . GOTTESMAN, I. I. (1963a) Genetic aspects o f intelligent behaviour. I n Ellis, N . ( E d . ) Handbook of Mental Deficiency: Psychological Theory and Research. M c G r a w Hill, N e w Y o r k . GOTTESMAN, I. I. (1963b) Heritability o f personality: a demonstration. Psychol. Monogr. 7 7 , 9, w h o l e number 572. 1. (1965) Personality and natural selection. G. ) Methods and Goals in Human Behaviour Genetics. A c a d e m i c Press, N e w York. GOTTESMAN, I. I. (1966) Genetic variance in adaptive personality traits.

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