20-item measure of sensitivity to reward (BAS) and punishment (BIS). ≈ 5 min to complete. Free with attribution.
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
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.
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.
All scoring runs in your browser. No data is sent anywhere — close the tab and the answers are gone.
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.
Psychometric figures are drawn from the validation literature and may vary across clinical populations and translations.
If BIS/BAS doesn't fit your context, related instruments in personality include:
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|---|---|---|---|
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| 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 | — |
BIS/BAS (Behavioral Inhibition/Activation Scales) is a validated instrument that assesses sensitivity to reward (BAS) and punishment (BIS). It is designed for clinicians, medical students, evidence-synthesis researchers. It takes about 5 min to complete, and the 24 items are summed to produce a total score.
BIS/BAS typically takes about 5 min to administer. The exact duration varies a little depending on whether it is self-administered or completed with a clinician. Its brief format is part of what makes it practical for routine clinical use and for repeat administration when tracking change over time.
BIS/BAS contains 24 items. Item scores are summed to produce the total.
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. In practical terms, a Cronbach’s α around 0.83 indicates good internal consistency (the items hang together well), and a test–retest reliability of 0.75 means scores are well when the scale is repeated without real clinical change.
BIS/BAS is free to use with attribution — clinical, educational, and research use is permitted provided the original source is credited. If you publish results or reproduce the scale, include the citation to the source paper.
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. This is the original publication for the BIS/BAS — the reference to cite when reporting results.
No. BIS/BAS is a structured assessment aid, not a diagnostic test. Its proper role is clinical assessment of sensitivity to reward (BAS) and punishment (BIS) — it standardizes assessment and flags who needs closer evaluation, but the result must be weighed alongside history, examination, and clinical context. When a score conflicts with your clinical impression, clinical judgment takes precedence; treatment decisions should never rest on a screening score alone.
BIS/BAS is supported by the following peer-reviewed sources: