| Term | Definition |
| conditional probability | the likelihood that a target behavior will occur in a given circumstance |
| contingency reversal | exchanging the reinforcement contingencies for two topographically different responses |
| descriptive functional behavior assessment | direct observation of problem behavior and the antecedent and consequent events under naturally occurring conditions |
| functional analysis | an analysis of the purposes (functions) of problem behavior, wherein antecedents and consequences representing those in the person's natureal routines are arranged within an experimental design so that their separate effects on problem behavior can be observed and measured |
| functional behavior assessment (FBA) | a systematic method of assessment for obtaining information about the purposes (functions) a problem behavior serves for a person |
| functionally equivalent | serving the same function or purpose, producing the same consequences |
| indirect functional assessment | stuctured interviews, checklists, rating scales, or questionaires used to obtain information from people who are familiar with the person exhibiting the problem behavior |
| contingent attention, contingent escape, alone, and control | the four conditions typically tested in a functional analysis |
| functional, descriptive, and indirect | FBA methods can be classified into three types: |
| ABC continuous recording, ABC narrative recording, and scatterplots | Three descriptive functional behavior assessments |