Which term denotes a stimulus present before a behavior occurs?

• A. Antecedent
• B. Aversive Stimulus
• C. Automatic Reinforcement
• D. ABAB Design

Answer: (A)

Antecedents are stimuli that occur before a behavior and set the occasion for that behavior by signaling what will follow or by changing motivation. In the ABC model of behavior, the sequence is antecedent, behavior, consequence, so the pre-behavior stimulus is the antecedent. This makes it the best term for describing a stimulus present before the behavior occurs because it names the cue or prompt that helps determine whether the behavior will happen. An aversive stimulus is a type of stimulus that can trigger avoidance or escape and may appear before a response, but it isn’t the general label for all pre-behavior cues. Automatic reinforcement refers to reinforcement that occurs due to the behavior itself, without external mediation. ABAB Design is a research design used to study treatment effects. So the term denoting a stimulus present before a behavior occurs is antecedent.