The relationship of mobility of inhibition to rate of inhibitory growth and measures of flexibility, extraversion, and neuroticism.

Measures of mobility of inhibition, and of internal, reactive and transmarginal inhibition, and inhibitory strength, which are claimed to index independent nervous system properties and personality dimensions, were obtained from a sample of 30 male undergraduates, and correlated with measures of sensorimotor, perceptual, and thinking flexibility, extraversion, and neuroticism. Results of a principal components analysis indicated that thinking flexibility and mobility of inhibition reflect speed of development of reactive inhibition, and the sensorimotor and perceptual flexibility are dependent on rate of growth of internal and transmarginal inhibition, respectively. Introverted Ss showed greater sensorimotor flexibility, but were less mobile, while Ss low on neuroticism were more flexible in perceptual tasks.