Functional Behavioral Assessments:
What, Why, When, Where, and Who?
Stephen Starin, Ph.D.
The recent amendments to IDEA are final. School districts are now required to conduct functional behavioral analyses of problem behaviors, under certain circumstances.
IDEA does not provide specific guidelines regarding the conduct of a functional
behavioral assessment. Each school district is left to its own devices
when interpreting the guidelines and may opt for lower quality standards.
What is a "Functional Behavioral Assessment"?
The term "Functional Behavioral Assessment" comes from what is called a "Functional Assessment" or "Functional Analysis" in the field of applied behavior analysis. This is the process of determining the cause (or "function") of behavior before developing an intervention. The intervention must be based on the hypothesized cause (function) of behavior.
Why Do Functional Behavioral Assessments?
Failure to base the intervention on the specific cause (function) very often results in ineffective and unnecessarily restrictive procedures.
For example, consider the case of a young child who has learned that screaming is an effective way of avoiding or escaping unpleasant tasks. Using timeout in this situation would provide the child with exactly what he wants (avoiding the task) and is likely to make the problem worse, not better. Without an adequate functional behavioral assessment, we would not know the true function of the young childís screaming and therefore may select an inappropriate intervention.
How Do You Determine the Cause or Function of Behavior?
There are three ways of getting at the function (cause) of the behavior:
(a) interviews and rating scales,
Several different interviews and rating scales have been developed to try to get at the function (cause) of behavior. However, reliability is usually poor and these should be used only as a starting point for systematic and direct observation of the personís behavior. Relying exclusively on interviews and rating scales should neverbe considered a functional assessment. Besides having poor reliability, it would never hold up in court with an expert witness.
A more reliable method involves directly observing the person's behavior in his or her natural environment and analyzing the behaviorís antecedents (environmental events that immediately precede the problem behavior) and consequences (environmental events that immediately follow the problem behavior).
Types of Problem Behavior
Problem behavior typically falls into one or more of three general categories:
(a) behavior that produces attention and other desired events (e.g., access to toys, desired activities),
Systematic Manipulation of Environment
In some cases, however, direct observation does not give a clear picture of the behaviorís functions and systematically manipulating various environmental events becomes necessary. The most common way of systematically manipulating the environment is to put the person in several different situations and carefully observe how the behavior changes.
For example, to determine the function of screaming, we could arrange for attention to be given to the child each time she screams and measure how frequently screaming occurs. We could also make demands on the child, terminating them each time she screams and measure how frequently it occurs. In addition, we could leave the child alone and measure how often screaming occurs. If screaming is more frequent when attention is given, we hypothesize that it occurs to get attention. If screaming is more frequent when demands are made, we can assume that screaming has served to let the person escape or avoid demands. Finally, if screaming is more frequent when left alone, we can assume that it is occurring because of its sensory consequences. This third method should be reserved only for situations in which the functions of behavior are not clear through systematic and direct observation.
What About Qualifications and Training?
An important question is "Who should be involved in the functional behavioral assessment?" The interview is important in gathering preliminary information that will guide later direct observation. As such, it is important to talk to the people who know the child the best: parents, teachers and significant others.
Direct observation should be carried out only by a person who has been thoroughly trained on collecting and analyzing this type of information. Directly manipulating environment events should be conducted only by a well-trained behavior analyst or someone else with a high degree of training and experience conducting these manipulations for they can pose danger to the person if not done correctly.
As can be seen, a functional behavioral assessment is more than a group of people sitting around a table trying to determine the cause. Although it is important to gather information from significant people in the personís life, it is not enough.
Someone knowledgeable about behavior must be in the classroom and/or family home directly observing and measuring the behavior. Although this takes time, it is usually time well spent because the intervention is more likely to be effective than one developed without careful consideration of the behaviorís function(s).
Donít Waste Valuable Time!
Time is precious.
Time should not be wasted on interventions (behavioral or otherwise) when
there is no evidence that this particular intervention is likely to work,
for this particular child, in this particular situation.
You can contact Behavior Analysis and Therapy, Inc. at (888) 423-4284 or on the Internet at http://www.behavior-analysis.org/