The impact of functional analysis methodology on treatment choice for self-injurious and aggressive behavior.

The authors read every paper they could find on functional analysis. They looked at how often researchers chose reinforcement versus punishment after they knew the function of self-injury or aggression.

The review covered kids and adults with mixed diagnoses. It was a narrative review, so they told the story of how FA changed practice instead of crunching new numbers.

Once teams ran a functional analysis, they usually picked a reinforcement plan. Use of punishment dropped.

The simple act of testing why behavior happened nudged clinicians toward kinder, function-matched treatments.

Northup et al. (1991) and Szatmari et al. (1994) had already shown brief FAs work in outpatient clinics. Matson et al. (1999) stitched those early trials together and revealed the wider trend: across studies, knowing the function steered people away from punishment.

Hodges et al. (2020) later repeated the same story for feeding problems—FA still leads to reinforcement. Cox et al. (2022) adds a twist: even when meds change, behavior function usually stays the same, so FA keeps its power to guide treatment.

Shepley et al. (2021) shows the real-world payoff: brief FA-driven programs cut severe behavior, but families must finish the sessions. The 1999 prediction—that FA would shape better choices—holds up if attendance is solved.

When you test before you treat, you naturally land on reinforcement. Let the data steer you away from aversive options. Build your FA into every intake, share the graph with the team, and watch punishment plans fade from the table.