BEHAVIORAL APPROACH SYSTEM (BAS) By N., Pam M.S. - April 7, 2013 Theory about incentive motivation that by activating behaviours in response to stimuli and positive reinforcement.. Compare behavioural inhibition system. BEHAVIORAL APPROACH SYSTEM (BAS): "The behavioural approach system uses positive reinforcement." Related Psychology Terms BEHAVIORAL APPROACH SYSTEM (BAS) REINFORCEMENT DRIVE DISPLACEMENT MODE THEORY PRIMARY REINFORCEMENT DIFFERENTIAL REINFORCEMENT OF LOW RATE (DRI) DIVERSIVE EXPLORATION REINFORCEMENT CONTINGENCY MOTIVATION MODELING Cite this page: N., Pam M.S., "BEHAVIORAL APPROACH SYSTEM (BAS)," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/behavioral-approach-system-bas-2/ (accessed February 17, 2020).