The Affective Involvement Instrument (AII) describes and classifies affective involvement in the process of decision-making as it occurs during classroom activities such as role-playing or group discussions. The thirty-celled instrument behaviorizes the six processes involved in decision-making and combines them with the taxonomic levels of the affective domain. Each cell describes signs of decision-making from problem definition and valuing through the process of deciding, as the individual voluntarily expresses his position. The AII can be used to: (1) program involvement and dissonance to study attitude change; (2) describe, diagnose, and redesign teaching strategy; and (3) provide information for teacher self-evaluation. (Author)