Table 1.

Some behavioral terms and definitions

	Pavlovian Learning	Instrumental (Operant) Learning
		Free Operant	Discriminated Operant
Examples	Tone-shock
	Tone-pellet	Lever press-pellet	Stimulus: Lever press-pellet
Terms	Conditioned Stimulus-Unconditioned Stimulus	Response – reinforcer	Stimulus: Response – reinforcer
	Stimulus-Outcome	Response-outcome	Stimulus: Response-outcome
Abbreviations	CS-US	R-O	S: R-O
	S-O
Acquisition	Conditioned response (CR; e.g., fear, freezing) becomes elicited by the CS	Response (R) increases	Response occurs in S
Extinction	CR declines when the CS is repeatedly presented without the US	R declines when R occurs without O	R occurrence in S declines when it repeatedly occurs in S without O