Which statement describes the difference between a functional analysis and a Functional Behavioral Assessment in schools?

• A. FA only looks at antecedents.
• B. FBA uses experiments; FA is observational.
• C. FA and FBA are the same.
• D. A functional analysis tests hypotheses via systematic manipulation; a typical FBA identifies function and antecedents/consequences without experimental manipulation.

Answer: (D)

These tools are about uncovering why a student engages in a behavior. In a Functional Behavioral Assessment, the team gathers information to identify the function of the behavior and the events that relate to it, using methods like interviews, rating scales, and direct observation of what happens before and after the behavior (the antecedents and consequences). This part often leads to a hypothesis about the purpose of the behavior, without deliberately changing the environment to test it.

A functional analysis, by contrast, is the experimental piece. It tests the hypothesized function by systematically manipulating the conditions around the behavior—changing antecedents and consequences across different situations—to see how the behavior responds. If the behavior increases when a particular consequence is available or a certain demand is present, that provides stronger evidence about the function.

So the best statement captures that distinction: the functional analysis tests hypotheses through controlled, systematic manipulation, while a typical FBA identifies the function and the relevant antecedents and consequences without experimental manipulation.

The other options don’t fit because they misstate what each process focuses on or how they operate.