| Term | Definition |
| ABC recording | also known as anecdotal observation |
| anecdotal observation | a form of direct, continuous observation in which the observer records a descriptive, temporally sequenced account of all behavior(s) of interest and the antecedent conditions and consequences for those behaviors as those events ocur in the client's natural environment |
| behavior checklist | a checklist that provides descriptions of specific skills and the conditions under which each skill should be observed |
| behavioral cusp | a behavior that has sudden and dramatic consequences that extend well beyond the idiosyncratic change itself because it exposes the person to new environments, reinforcers, contingencies, responses, and stimulus controls |
| ecological assessment | an assessment protocol that acknowldges complex interrelationships between environment and behavior - a method for obtaining data across multiple settings and persons |
| function-based definition | designates responses as members of the targeted response class solely in terms of their common effect on the environment |
| habilitation | (adjustment) occurs when a person's repertoire has been changed such that short- and long-term reinforcers are maximized and short- and long-term punishers are minimized |
| normalization | the belief that people with disabilities should be physically and socially integrated into the mainstream of society regardless of the degree or type of disability |
| pivotal behavior | a behavior that, when learned, produces corresponding modifications or covariation in other untrained behaviors |
| reactivity | effects of an observation and measurement procedure on the behavior being measured |
| relevance of behavior rule | holds that only behaviors likely to produce reinforcement in the person's natural envioronment should be targeted for change |
| social validity | refers to the exten to which target behaviors are appropriate, intervention procedures are acceptable, and important and significant changes in target and collateral behaviors are produced |
| target behavior | the response class selected for intervention; can be defined either functionally or topographically |
| topography-based definition | defines instances of the targeted response class by the shape or form of the behavior |
| objective, clear, complete | three characteristics of a "good definition" |