Validity of the aberrant behavior checklist in children with autism spectrum disorder.

The team ran a large psychometric check on the Aberrant Behavior Checklist (ABC) in kids with autism.

They looked at whether the five subscales still hang together and measure what they claim to measure.

Participants came from many sites, giving the scale its biggest autism test to date.

The five-factor structure held up. Irritability, lethargy, stereotypy, hyperactivity, and inappropriate speech stayed separate and clear.

In plain words, the ABC still works as a behavior tracker for autistic children.

Campbell (2003) and Heyvaert et al. (2014) pooled hundreds of single-subject studies that used the ABC as the yard-stick. Both meta-analyses found behavioral interventions cut problem behavior most when an experimental functional analysis came first.

Stancliffe et al. (2007) showed risperidone beat placebo on the same ABC-Irritability subscale. The new data give you confidence those drug and therapy gains rest on solid measurement ground.

Rieth et al. (2022) did the same kind of psychometric double-check for the Behavioral Inflexibility Scale. Together these papers form a safety net: if one scale wiggles, replication studies catch it.

You can keep using the ABC to track meltdowns, self-injury, and repetitive talk without second-guessing the numbers. When parents or teachers rate the same child differently, trust the profile, not just one rater. Use the five subscale scores to pick precise targets and show insurance or schools why your plan makes sense.