4 Participation in Functional Assessment

Purpose and role

Functional behavior assessment (FBA) is a systematic process for understanding the conditions associated with a behavior and using that information to guide support. Staff members and trainees may help gather information and collect observations only within their training, assigned roles, and supervisor’s direction. The purpose is to understand the person and improve support, not to blame or punish.

Assessment methods and their limits

Assessment methods provide different kinds of information, and their findings have different limits.

• Indirect assessment gathers reports from people who know the person, existing records, interviews, or questionnaires. It can help identify routines, strengths, relevant settings, and situations to observe. Because it relies on reports and memory, it suggests what to investigate rather than proving a behavioral function.

• Descriptive assessment involves direct observation in ordinary settings. Observers record what happens before and after a clearly defined behavior, often using an antecedent–behavior–consequence (ABC) format. It can show patterns of association, but does not by itself establish that one event caused the behavior.

• Functional analysis tests a hypothesis by systematically changing environmental conditions and measuring behavior. This experimental procedure may involve risk and requires appropriate expertise, planning, authorization, and oversight. It is not an activity to conduct independently.

• A preference assessment identifies items or activities a person may prefer. It can help a team select possible reinforcers, but does not by itself determine why a behavior occurs.

Gather and record information

At the supervisor’s direction, help review relevant records and gather reports from the person, family members, or staff who know the person in different settings. Ask neutral, specific questions about what the behavior looks like, when it occurs and does not occur, what happens just before and after it, and what communication, skills, interests, and successful supports the team should consider. Multiple sources are useful because reports may differ. Respect privacy, follow information-sharing rules, and do not present guesses as facts.

Use supervisor-approved questions and recording forms. Before observing, confirm the operational definition—the observable description of what counts as the behavior—and the required recording method. For ABC data, record observable events in order and as accurately as possible. For example: “The teacher placed a worksheet on the desk; the student pushed it away and said ‘no’; the teacher removed the worksheet.” Record what happened rather than interpretations such as “was defiant” or “wanted attention.” Include relevant context, including when the behavior does not occur, and report gaps or uncertainty instead of filling them in.

Work safely within the plan

Follow the approved plan, stay within your training, and maintain the person’s dignity and privacy. Do not provoke behavior, withhold support, change consequences, or alter routines to test a theory unless a qualified supervisor has explicitly authorized and trained you for that procedure. Follow site safety and emergency procedures.

If risk increases, the situation differs from the plan, or you are unsure what to do, prioritize safety and contact the supervisor. Do not continue collecting data at the expense of safety. Record what occurred and any departure from the protocol. Assessment and data collection should be selected and implemented appropriately, with the aim of maximizing benefit while minimizing risk.

Use findings to guide support

The assessment team reviews reports and observations, defines the behavior, and develops a testable hypothesis about the relationship among context, behavior, and outcomes. For example: “When a difficult task is presented, the student leaves the area; the task is then postponed. Leaving may be reinforced by a delay or escape from the task.” This is a hypothesis, not a conclusion established by one event.

Using the best available evidence, the team designs support related to the hypothesized function. Strategies may include teaching a suitable way to request a break, adjusting task demands, and reinforcing communication. The team monitors data to determine whether the support helps and revises it when needed. The qualified team uses assessment findings to select, monitor, and refine supportive strategies.