Functional Analysis
Also called: FA, experimental functional analysis, analog assessment
Definition
An experimental method for identifying the function of a behavior: conditions that each present one possible antecedent and consequence — attention, escape from demands, access to tangibles, alone — are arranged and alternated, and the behavior is measured in each. The condition with the highest rate identifies the maintaining consequence. It is the only assessment method that demonstrates function rather than suggesting it, and it is designed and interpreted by the supervising analyst.
In plain language
A test of why a behavior happens. Different situations are set up on purpose, and the one where the behavior happens most shows what keeps it going. The analyst designs and reads it.
Example
Across alternating sessions, hair pulling is high only when it produces a break from tasks. Escape is the demonstrated function.
Not functional analysis
Recording ABC data during a normal morning. Nothing is arranged, so it is a descriptive assessment.
Commonly confused with
See also
Written from
- iwata-1982-1994
- hanley-iwata-mccord-2003
- hanley-2014 — Synthesized contingencies
Written from Iwata et al. (1982/1994), Hanley, Iwata and McCord (2003) and Hanley et al. (2014). No textbook glossary consulted.
This entry has not yet been through clinical review. Treat it as a draft.