Factor Structure and Psychometric Properties of the BIS/BAS Scales in Children and Adolescents With Autism.
The BIS/BAS Scales work for autistic youth—use the five-factor bifactor form to gauge reward and punishment drives.
01Research in Context
What this study did
Chetcuti et al. (2026) tested if the BIS/BAS Scales really measure reward and punishment sensitivity in autistic kids.
They gave the survey to 709 autistic youth . They ran factor stats to find the cleanest structure.
The team checked if the scores stayed the same across age, sex, and IQ.
What they found
A five-factor bifactor model fit best. It kept the two big drives (reward and punishment) plus three smaller sub-drives.
Scores stayed stable across groups. The scale linked to ADHD and anxiety ratings as expected.
How this fits with other research
Rojahn et al. (2012) trimmed the 49-item BPI-01 down to 30 items and still kept high validity. Lacey does the same job for personality drives.
Kleinert et al. (2007) used factor stats to back the Repetitive Behavior Scale-Revised in autistic kids. Lacey copies that method for reward/punishment traits.
Rojahn et al. (2012) warned that the SRS catches many false positives. Lacey’s tight fit stats show the BIS/BAS does not share that problem.
Why it matters
You now have a quick, valid way to ask how strongly an autistic client chases rewards or avoids mistakes. Use the five-factor version. Add it to intake packets to pick reinforcers faster and spot kids who shut down after error correction.
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02At a glance
03Original abstract
The Behavioral Inhibition System and Behavioral Activation System (BIS/BAS) Scales offer a framework for assessing individual differences in sensitivity to reward and punishment-processes theorized to underlie key autism features. Despite widespread use, the psychometric properties of the BIS/BAS Scales have yet to be evaluated in the autistic population. Therefore, this study sought to evaluate the factor structure and psychometric properties of the BIS/BAS Scales in a sample of children and adolescents with autism. Parents of N = 709 autistic youth (Mage [SD] = 11.22 years [3.54]; 75% male) completed the BIS/BAS Scales alongside additional convergent/divergent validity measures. Factor structures ranging from one to eight specific factors were tested, including bifactor and hierarchical models with and without general factors. Measurement invariance was assessed across age groups (< 12 years vs. ≥ 12 years) and gender. Convergent and divergent validity were evaluated using bivariate correlations. Results indicated that a five-factor bifactor model-comprising general BIS and BAS dimensions alongside specific BIS-Fight/Flight/Freezing, BIS-Worry, BAS-Drive, BAS-Reward Responsiveness, and BAS-Fun Seeking factors-exhibited best fit and measurement invariance. Factors showed strong construct validity through correlations with emotion problems, risk avoidance, response inhibition, neuroticism, shyness, activity, and extraversion. Findings support the BIS/BAS Scales as a psychometrically sound measure of reward and punishment sensitivity in autistic youth. Further research is needed to confirm model generalizability, structural stability, and measurement invariance across both clinical and non-clinical populations.
Autism research : official journal of the International Society for Autism Research, 2026 · doi:10.1002/aur.70171