Some Sources of Behavioral Variance as Measured by an S-R Inventory of Machiavellianism
In this study a start is made with the construction of a Stimulus-Response Inventory of Machiavellianism (Mach S-R). The inventory was administered to students of a ‘Sociale Academie,’ who differed in age, sex, and degree of Machiavellianism. The Mach S-R used here consisted of nine descriptions of situations and six Machiavellian modes of response. The reliability-coefficients for the 9 descriptions ranged from ( a) 0.45 to 0.84, while the coefficients for the six modes of response ranged from ( a) 0.72 to 0.92. A three-way analysis of variance, i.e., persons by situations by modes of response, was computed, on which basis finally the proportion of the total variance accounted for by each component was calculated. Of the main effects the individual differences contributed over all data on the average about 17.7%, the situations about 2.3%, and the modes of response about 4.7% of the total variance. The interaction of persons by situations contributed on the average about 12.6%, whereas the interaction of persons by modes of response accounted for about 25.7% of the total variance, which is the highest percentage after the 36 9% for the ‘triple interaction’ and ‘error term.’ The interaction of situations by modes of response was so small it could be ignored altogether. Few differences existed between two age groups, i.e., between full-time students (average age 21 yr.) and part-time students (average age 33 yr.). Besides, these differences were probably associated with sex differences, which were rather more pronounced. The discrepancies between low and high Machs, furthermore, seemed to be about the same as those between the sexes. Continuation of the study of sex differences, of situations, and modes of response is encouraged.