Two systems drive your behavior: one that hits the brakes (BIS, sensitivity to threats and punishment) and one that hits the gas (BAS, sensitivity to rewards and approach). The BAS splits into three - Drive, Fun Seeking, and Reward Responsiveness - giving you a fuller picture of what motivates you. 24 items, about 5 minutes.

What drives you — avoidance or approach?

The BIS/BAS Scales, developed by Charles Carver and Teri White (1994), are based on Gray's Reinforcement Sensitivity Theory. They measure two separate motivational systems that exist in everyone:

  • BIS (Behavioral Inhibition System): Responsible for sensitivity to punishment, threat, and novel stimuli. High BIS individuals are more alert to potential negative outcomes, experience more anxiety, and tend to avoid risky situations.
  • BAS (Behavioral Activation System): Responsible for sensitivity to reward, opportunity, and approach cues. High BAS individuals pursue goals energetically, get excited about potential rewards, and are more likely to act impulsively in pursuit of something desirable.
The three BAS subscales each capture a different slice of approach motivation:
  • Drive: Persistent pursuit of goals
  • Fun Seeking: Desire for novel rewards and spontaneous action
  • Reward Responsiveness: Positive emotional reactions to rewards
These systems are independent — you can be high on both BIS and BAS (sensitive to both threat and reward) or low on both. The scale takes about 5 minutes to complete.

*Carver, C. S., & White, T. L. (1994). J Pers Soc Psychol, 67(2), 319-333.*

Result Interpretation

Finish the 24 questions and you get your results straight away — no account needed, nothing to sign up for.

  • Your score is calculated from your answers.
  • What it means — a plain-language breakdown of where you fall.
  • Dimension scores shown separately for each sub-scale.
  • Context where available, compared against population norms.

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