A single instance of behavior, which is the measurable unit of analysis in the science of behavior analysis.

A group of behaviors with differing topographies that have the same function and serve the same purpose.

A person’s entire collection of learned skills and behaviors that are related to a specific task or setting.

A large class of responses that share physical dimensions and functions and are the observable actions of a person (what they say or do), as well as their private events,…

A group of stimuli that share common timing in relation to the behavior they precede or follow.

External or internal environmental event(s) that affect an individual’s behavior.

A group of stimuli that share a common function, topography, or temporal relation and have a common effect on a response class (behavior). Hint: Think of the stimulus class as…

A group of stimuli that share physical/topographical features.

A group of stimuli that share an infinite number of possible relations and evoke the same response. 

A group of stimuli that do not share any common topographies but evoke the same response. 

The difference between formal and feature stimulus class is something that has caused many students a great deal of confusion. That is because they seem the same, unless you look closely and realize they are not. PTB co-founder Dana Meller explains. Refer to 5th Edition Task List Section B-2: Define and provide examples of stimulus and stimulus class.

PTB co-founder Dana Meller discusses the term environment in connection with a term defined as a physical event that influences how individuals interact with the world around them Refer to BCBA® Task List (5th ed.) Section B-2: Define and provide examples of stimulus and stimulus class.

Test your knowledge of concepts and principles as PTB co-founder Dana Meller reviews a question about identifying a specific type of stimulus class, and the features associated with the three main stimulus class variations. Refer to BCBA® Task List (5th ed.) Section B-2: Define and provide examples of stimulus and stimulus class.