Abstract

This paper presents a validation study of a new questionnaire of self-control as an individual trait. The questionnaire has two parallel versions, one based on self-reports and another one based on informant reports. Each version consists of three subscales, called Inhibition, Switching, and Goal Monitoring. Eight samples of participants took part in the validation study. Both versions obtained satisfactory indices of internal consistency, assessed with Cronbach’s alpha and split-half coefficients. Selfcontrol assessed with this scale proved to be entirely independent of general intelligence. However, AS-36 and AS-36-3 scores tended to correlate with other self-report measures of trait self control, such as Tangney, Baumeister, and Boone’s self-control scale. We conclude that AS-36 is a valid and reliable tool, suitable for assessment of self-control in both research and diagnostic settings.