BIS/BAS: Behavioral Inhibition/Activation Scales

20-item measure of sensitivity to reward (BAS) and punishment (BIS). ≈ 5 min to complete. Free with attribution.

personality 24 items ≈ 5 min Updated 2026-05-06

Score BIS/BAS below → Download printable PDF View source paper (DOI)

What is BIS/BAS? BIS/BAS (Behavioral Inhibition/Activation Scales) is a validated instrument used to assess 20-item measure of sensitivity to reward (bas) and punishment (bis).. It is used in 20-item measure of sensitivity to reward (bas) and punishment (bis).. It comprises 24 items. Administration takes about 5 min.

What is BIS/BAS?

BIS/BAS (Behavioral Inhibition/Activation Scales) is a validated clinical instrument used to assess 20-item measure of sensitivity to reward (bas) and punishment (bis).. It is most often used for 20-item measure of sensitivity to reward (bas) and punishment (bis).. The instrument contains 24 items. Typical administration time is ≈ 5 min.

Source / attribution: Free to use with citation

Full name	Behavioral Inhibition/Activation Scales
Measures	20-item measure of sensitivity to reward (BAS) and punishment (BIS).
Specialty	personality
Time to complete	≈ 5 min
Number of items	24
Scoring method	sum
License	Free with attribution
Last updated	2026-05-06
Algorithm version	2.0

Clinical context: when BIS/BAS is used

20-item measure of sensitivity to reward (BAS) and punishment (BIS). BIS/BAS is part of standard practice in this setting because it provides a structured, replicable assessment that can be tracked over time and compared across patients or visits.

Like all screening or assessment instruments, BIS/BAS is a structured aid — not a diagnostic test in isolation. Results should be interpreted alongside history, examination, and clinical context. Where a score crosses an actionable threshold, the next step is typically a more detailed clinical evaluation rather than a definitive diagnosis.

Score BIS/BAS

Answer all 24 items below to see your BIS/BAS score and interpretation.

Each item is scored on a 4-point scale (0–0). Your score updates live as you answer.

Item 1. A person's family is the most important thing in life (filler)
Item 2. Even if something bad is about to happen to me, I rarely experience fear or nervousness
Item 3. I go out of my way to get things I want
Item 4. When I'm doing well at something, I love to keep at it
Item 5. I'm always willing to try something new if I think it will be fun
Item 6. How I dress is important to me (filler)
Item 7. When I get something I want, I feel excited and energized
Item 8. Criticism or scolding hurts me quite a bit
Item 9. When I want something, I usually go all-out to get it
Item 10. I will often do things for no other reason than that they might be fun
Item 11. It's hard for me to find the time to do things such as get a haircut (filler)
Item 12. If I see a chance to get something I want, I move on it right away
Item 13. I feel pretty worried or upset when I think or know somebody is angry at me
Item 14. When I see an opportunity for something I like, I get excited right away
Item 15. I often act on the spur of the moment
Item 16. If I think something unpleasant is going to happen, I usually get pretty 'worked up'
Item 17. I often wonder why people act the way they do (filler)
Item 18. When good things happen to me, it affects me strongly
Item 19. I feel worried when I think I have done poorly at something important
Item 20. I crave excitement and new sensations
Item 21. When I go after something, I use a 'no holds barred' approach
Item 22. I have very few fears compared to my friends
Item 23. It would excite me to win a contest
Item 24. I worry about making mistakes

All scoring runs in your browser. No data is sent anywhere — close the tab and the answers are gone.

How BIS/BAS is scored

BIS scale (7 items) 7-28, BAS scale (13 items) 13-52 with three subscales. Higher = stronger sensitivity.

Scoring notes: BIS scale (7 items) 7-28, BAS scale (13 items) 13-52 with three subscales. Higher = stronger sensitivity.

BIS/BAS psychometric properties

Internal consistency. Cronbach's α = 0.83 — acceptable to good.
Test–retest reliability. r = 0.75 — stable across repeated administrations.
Validity. Widely used in motivation and psychopathology research.

Psychometric figures are drawn from the validation literature and may vary across clinical populations and translations.

Limitations & common pitfalls

BIS scale (7 items) 7-28, BAS scale (13 items) 13-52 with three subscales. Higher = stronger sensitivity.
Screening, not diagnosis. A positive BIS/BAS score is not equivalent to a diagnosis. Confirmatory clinical evaluation is required before treatment decisions.
Population calibration. Cutoffs were derived from specific validation populations. Performance can differ in other age groups, languages, comorbid conditions, or clinical settings.
Self-report bias. Patient-reported instruments are subject to under- and over-reporting; clinical context is essential.

How BIS/BAS compares to other personality scales

If BIS/BAS doesn't fit your context, related instruments in personality include:

Scale	Measures	Items	Time
TIPI	Ultra-brief measure of the Big Five personality dimensions.	10	≈ 2 min
LOT-R	10-item measure of dispositional optimism with 4 filler items.	10	≈ 2 min
PHQ-9	Severity of depression	9	≈ 3 minutes
GAD-7	Severity of generalized anxiety	7	≈ 2 minutes
AUDIT	10-item WHO screening tool for hazardous alcohol consumption and dependence.	10	≈ 3 min
CHA2DS2-VASc	Annual stroke risk in non-valvular atrial fibrillation	8	—
Glasgow Coma Scale	Level of consciousness after head injury	3	—
MELD-Na	3-month mortality in advanced liver disease; transplant prioritization	5	—

Frequently asked questions about BIS/BAS

What does BIS/BAS measure?

BIS/BAS (Behavioral Inhibition/Activation Scales) is a validated instrument that assesses 20-item measure of sensitivity to reward (bas) and punishment (bis).. Its primary clinical use is 20-item measure of sensitivity to reward (bas) and punishment (bis)..

How long does BIS/BAS take to complete?

BIS/BAS typically takes ≈ 5 min to administer. Time can vary slightly depending on whether it is self-administered or clinician-led.

How many items are on BIS/BAS?

BIS/BAS contains 24 items. Items are summed to produce a total score.

How reliable is BIS/BAS?

BIS/BAS has reported Cronbach's α of 0.83 in validation samples and test–retest reliability of 0.75. Widely used in motivation and psychopathology research.

Is BIS/BAS free to use?

BIS/BAS is free to use with attribution. Free to use with citation

What is the source paper for BIS/BAS?

Carver, C. S., & White, T. L. (1994). Behavioral inhibition, behavioral activation, and affective responses to impending reward and punishment. Journal of Personality and Social Psychology, 67(2), 319-333.

Can BIS/BAS replace clinical judgment?

No. BIS/BAS is a structured assessment aid. A score is one input alongside history, examination, and clinical context. Treatment decisions should never rest on a screening score alone.

References & validation

BIS/BAS is supported by the following peer-reviewed sources:

Carver, C. S., & White, T. L. (1994). Behavioral inhibition, behavioral activation, and affective responses to impending reward and punishment. Journal of Personality and Social Psychology, 67(2), 319-333. doi:10.1037/0022-3514.67.2.319 · PubMed