Abstract :
To construct a questionnaire for the measurement of aggressiveness as a trait of personality in adolescents with 10 scales of 16 items and 3 scales of 12 items, named Comprehensive Inventory of Aggressiveness, the author wrote or selected from other sources 826 items classified initially into 24 scales. After several item and factor analyses, 13 scales with Cronbach α going from 0.75 to 0.88 were isolated. The factor analyses of these scales gave four factors: Rebelliousness, with scales of Nonconformity, Verbal aggression, Malice and Negativism; Spontaneous aggressiveness, with scales of Physical aggression, Boldness, Suspiciousness, and Vicarious aggression; Intraggressiveness, with scales of self-aggression, Irritability, with Lack of control and Revengefulness. The lowest correlation of 0.26 is between the factors of Spontaneous aggressiveness and Intraggressiveness, and the highest 0.54 is between Rebelliousness and Spontaneous aggressiveness. These factors account for 64.75 percentages of the total variance.
