The behavior flexibility rating scale-revised (BFRS-R): factor analysis, internal consistency, inter-rater and intra-rater reliability, and convergent validity.

Peters-Scheffer et al. (2008) built a shorter way to measure behavioral flexibility in kids with developmental disabilities. They call it the BFRS-R.

Parents and staff filled out the new form. The team ran factor analysis to see which items hang together. They checked if different raters gave similar scores.

The scale held up well. Internal consistency was excellent. Inter-rater and intra-rater reliability were good.

That means mom, dad, and staff can each use the BFRS-R and get similar results on different days.

Several recent papers also trim and test caregiver forms. Eisenhower et al. (2006) shortened the CSBQ for milder PDD traits. Allen et al. (2016) found a four-factor SRS-2 teacher model that works for lower-functioning youth with ASD.

Waschl et al. (2021) did the same with the Family Outcomes Survey. All report good reliability, just like the BFRS-R.

The difference is focus. BFRS-R targets flexible behavior itself. The others look at social traits or service helpfulness.

You now have a quick, solid tool to track how stiff or flexible a child's daily behavior is. Use it at intake, mid-treatment, and follow-up. If parents and staff both complete it, you can spot when rigidity drops and celebrate real progress with numbers everyone trusts.