IPIP BIS/BAS — Behavioral Inhibition & Activation Scales (36 items)
A 36-item public-domain measure of temperament based on Gray's reinforcement-sensitivity model. Reports scores on the Behavioral Inhibition System (Anxiety) and three Behavioral Activation System dimensions — Drive, Reward Responsiveness, and Fun-seeking — in about five to eight minutes. Free.
Behavioral Inhibition System
Anxiety (BIS) — sensitivity to threat, punishment, and uncertainty
Behavioral Activation System
Drive · Reward Responsiveness · Fun-seeking
At a glance
What does BIS/BAS measure?
Gray's reinforcement-sensitivity theory proposes two fundamental motivational systems that shape how people respond to rewarding and threatening stimuli. The Behavioral Inhibition System (BIS) is activated by signals of punishment, non-reward, novelty, and innate fear stimuli; high BIS sensitivity is associated with increased vigilance, caution, and anxiety in the face of potential threats or uncertain outcomes. The Behavioral Activation System (BAS) — sometimes called the behavioral approach system — is activated by signals of reward and non-punishment; it drives goal-directed behavior and positive affect.
The BAS is further differentiated into three dimensions that capture distinct aspects of approach motivation: Drive (persistent pursuit of goals), Reward Responsiveness (positive emotional reactions to anticipated or actual rewards), and Fun-seeking (the desire for novel rewards and a tendency toward impulsive action). These four scales capture a person's general motivational style independently of mood state.
Anxiety (BIS)
The Behavioral Inhibition System — sensitivity to signals of punishment, non-reward, novelty, and uncertainty. Higher scores reflect greater vigilance and caution in the face of potential negative outcomes.
Drive (BAS)
Persistent pursuit of desired goals. Higher scores reflect a tendency to keep going in the face of obstacles and to feel a sense of urgency to reach important goals.
Reward Responsiveness (BAS)
Positive emotional reactions to anticipated or received rewards. Higher scores reflect stronger emotional engagement when working toward or obtaining something desirable.
Fun-seeking (BAS)
Desire for novel rewards and a tendency toward spontaneous action. Higher scores reflect a preference for seeking new positive experiences and acting on the spur of the moment.
Report includes
Scores on all four BIS/BAS scales. Anxiety (BIS), Drive, and Reward Responsiveness are reported with population percentiles derived from the Eugene-Springfield Community Sample (English-language, verbatim IPIP items), placing your result relative to a community reference group. Fun-seeking is reported as a percent-of-max score. Each scale also shows a non-diagnostic narrative band (Higher, Average, or Lower) for orientation.
Items drawn from the public-domain International Personality Item Pool (Goldberg et al., 2006; ipip.ori.org), operationalizing the BIS/BAS constructs of Carver & White (1994). Norms derived from the Eugene-Springfield Community Sample (English-language administration).