BIS/BAS Scales (Carver & White, 1994)
24 items on the behavioral inhibition and activation systems
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.
The BIS/BAS Scales come from Charles Carver and Teri White (1994), based on Gray’s Reinforcement Sensitivity Theory. They measure two separate motivational systems that coexist in everyone.
BIS (Behavioral Inhibition System): Tuned to punishment, threats, and novel situations. High BIS people notice potential downsides fast, feel more anxiety, and tend to avoid risky situations.
BAS (Behavioral Approach System): Tuned to rewards, opportunities, and positive outcomes. High BAS people chase what they want, feel excited by challenges, and recover quickly from setbacks.
They run independently — you can be high on both, low on both, or somewhere in between. Someone with high BIS and high BAS is basically driven to pursue goals while also sweating the risks. Someone with low BIS and low BAS? Steady, stable, not easily fazed or excited.
The scale has 24 items (plus 4 filler items). The BAS splits into three subscales: Drive, Reward Responsiveness, and Fun Seeking. The BIS is a single factor.
Psychometric data holds up across cultures: BIS alpha around .74–.80, BAS subscales .66–.76. Test-retest at 8 weeks: BIS .66, BAS .69. The BIS/BAS framework is one of the better supported personality models in behavioral neuroscience — Gray’s original theory has been refined over decades, and these scales are the most used operationalization.
Result Interpretation
After completing the 24 questions, you'll receive an immediate, detailed report with:
- Your score — calculated automatically based on your responses
- Score interpretation — what your score means in practical terms
- Dimension breakdown — separate scores for each sub-scale
- Context — how your results compare to general population norms where available
All results are displayed on screen. No account or login needed.