Influence of assessment setting on the results of functional analyses of problem behavior.

Lang et al. (2010) wrote a short review. They looked at three earlier studies. All three asked the same question: do functional analysis results stay the same when you move from one room to another?

The kids in the studies had developmental delays. The rooms were home, school, and clinic. The review does not give new data. It sums up old data and tells researchers what to try next.

The review found a warning sign. The same child could show different functions in different places. A behavior that was “attention-maintained” in the clinic might be “escape-maintained” in the classroom.

The authors say: always check your FA in the real place where the problem happens. One room is not enough.

Lang et al. (2008) ran the exact test first. They worked with two children and flipped between clinic and classroom. The functions changed for both kids. The 2010 review simply puts this lesson into words for everyone else.

Melanson et al. (2023) now casts a wider net. They scanned 1,333 FA cases from 2012-2022. They show the field has moved on: shorter sessions, more outpatient rooms, more kids with autism. Their giant map replaces the tiny 2010 sketch.

Bao et al. (2017) add a twist. They watched behavior outside the FA room while the FA was running. Sometimes problem behavior rose, sometimes it fell. The 2010 paper worries about getting the wrong function; the 2017 paper warns the act of testing can itself shake the data in nearby spaces.

Before you write a behavior plan, run a quick probe in the lunchroom, playground, or living room where the trouble really happens. If the function flips, write two plans or pick the setting that matters most. This five-minute step can save weeks of failed treatment later.