End-of-day moods on work and leisure days in relation to extraversion, neuroticism, and amount of change in daily activities.

Abstract
The hypothesis was tested concerning whether the relationship between daily activity variation (AV) of human subjects and their end-of-day moods (M) was moderated by extroversion-introversion (E-I), the relationship being positive for extroverts, negative for introverts. This hypothesis was derived from Eysenck''s (1967) theory of biological differences in cortical inhibition-excitation of E and I. A 2nd hypothesis was tested concerning whether the relationships involving AV, M and E-I were stronger on a non-work (leisure) than a work day (WL). This hypothesis was based on the assumption that on a work day AV often had low affective impact, because it involved high redundancy. A possible influence of neuroticism-stability (N-S) on these relationships was explored. A 2 .times. 2 .times. 2 .times. 2 ANOVA of M scores for the dichotimized classifications of WL, E-I, N-S, and AV supported both hypotheses. Neurotics showed inverted responses from those of stables, such that the positive relationship between AV and M for stable extroverts became negative, and the negative relationship for stable introverts became positive, when subjects were neurotic. A formulation to account for these results was presented, and the different forms of varied experience that leisure days can provide, compared with work days, were discussed. A few practical uses of the results were suggested.

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