Three-term contingency

The three-term contingency (also known as the ABC contingency) in operant conditioning—or contingency management—describes the relationship between a behavior, its consequence, and the environmental context. The three-term contingency was first defined by B. F. Skinner in the early 1950s.[1] It is often used within ABA to alter the frequency of socially significant human behavior.

Components

Antecedent

The antecedent stimulus occurs first in the contingency and signals that reinforcement or punishment is available on the contingency of a specific behavior. A discriminative stimuli, or S^D, directly affects the likelihood of a specific response occurring.[2]

Behavior

The behavior, also referred to as the response, is any observable and measurable action a living organism can do. In the three-term contingency, behavior is operant, meaning it changes the environment in some way.

Consequence

Diagram of consequences in operant conditioning

The consequence to a behavior can be reinforcing or punishing. Reinforcing consequences increase the likelihood of a behavior occurring in the future; it is further divided into positive and negative reinforcement. Punishing consequences decrease the likelihood of a behavior occurring in the future; like reinforcement, it is divided into positive and negative punishment.

The effectiveness and value of a consequence is determined by the motivating operations the organism has. For example, deprivation of food can make food more effective as a consequence, and the satiation of hunger can make food less effective as a consequence.[3]

gollark: We could call it "Combine Harvester".

gollark: Just hope nobody gets cornfielded around when daylight saving time begins...

gollark: I suppose we could make some sort of cornfield bot which could also handle that SHAMEing thing. I have some experience writing Discord bots, so I could help with that.

gollark: Stupid time zone weirdness. I'm going to look up whether it's daylight saving time now or not.

gollark: I think that would have happened at 22:30 or so today... plus two days from when you complained.

References

Skinner, B. F. (Burrhus Frederic) (1953). Science and human behavior. New York: Macmillan. ISBN 0029290406. OCLC 191686.
David., Pierce, W. (2004). Behavior analysis and learning. Cheney, Carl D. (3rd ed.). Mahwah, N.J.: L. Erlbaum Associates. ISBN 9780805844894. OCLC 51566296.
O., Cooper, John (2007). Applied behavior analysis. Heron, Timothy E., Heward, William L., 1949- (2nd ed.). Upper Saddle River, N.J.: Pearson/Merrill-Prentice Hall. ISBN 978-0131421134. OCLC 74942760.

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[1] Skinner, B. F. (Burrhus Frederic) (1953). Science and human behavior. New York: Macmillan. ISBN 0029290406. OCLC 191686.

[2] David., Pierce, W. (2004). Behavior analysis and learning. Cheney, Carl D. (3rd ed.). Mahwah, N.J.: L. Erlbaum Associates. ISBN 9780805844894. OCLC 51566296.

[3] O., Cooper, John (2007). Applied behavior analysis. Heron, Timothy E., Heward, William L., 1949- (2nd ed.). Upper Saddle River, N.J.: Pearson/Merrill-Prentice Hall. ISBN 978-0131421134. OCLC 74942760.