Functional Analysis Decision-Making Considerations
Follow the decision tree to pick the safest, fastest FA format instead of always running the standard four conditions.
01Research in Context
What this study did
Brown et al. (2025) wrote a how-to guide for new BCBAs. They built a decision tree that picks which FA conditions to run and how to run them safely.
The paper lists yes-or-no questions about client history, setting, and risk. Each answer sends you down a branch that names the best FA format and safety steps.
What they found
The tree keeps novices from always defaulting to the standard four conditions. It tells you when to use brief, trial-based, or interview-informed FAs instead.
Built-in stop rules protect the client. If aggression spikes, the tree says to pause, add protective equipment, or switch to a less risky probe.
How this fits with other research
Hoffmann et al. (2025) asked 15 FA experts the same question: how do you pick a format? Experts also said, "never default to one method." Both papers push the same core idea—match the method to the context—but Brown gives you the exact map.
Spackman et al. (2025) used the same logic while coaching parents over Zoom. They let families run progressive FAs at home and still hit a large share behavior reduction. The decision tree works in person and on screen.
Schieltz et al. (2022) proved telehealth FA is safe across 199 global families. Brown’s safety checks line up with what those coaches already do: short sessions, clear stop rules, and parent consent every step.
Why it matters
New BCBAs often freeze when it is time to design an FA. This paper gives you a laminated one-page flowchart you can keep on your clipboard. Use it Monday to pick safer, faster, and clearer test conditions without second-guessing yourself.
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02At a glance
03Original abstract
Functional analysis (FA) is often considered an integral component of treating severe challenging behavior (e.g., aggression, self-injury). Given its essential nature, there are a growing number of publications aimed at supporting clinicians’ understanding of FA design and methodological refinements for addressing barriers to implementation. The current paper builds on previous work by offering a guide for clinicians new to FA implementation. In particular, guidance is provided on when and under what conditions to include specific FA test conditions and how to select a given methodology for a case. In addition, we provide an in-depth discussion on best practices for safe and ethical FAs, regardless of the chosen setting, implementer, or methodology.
Behavior Analysis in Practice, 2025 · doi:10.1007/s40617-025-01057-w