PSYC 181 Lecture 12: Motivating Operations (1)
Document Summary
Umos: a motivative relation with an unlearned value altering effect, food, water, activity, sleep, oxygen (actually an increase in blood carbon dioxide level), sexual activity/stimulation, being warm, being cold, painful stimulation. Mo, sr+, sp: multiple effects of a single stimulus, sexual stimulation, becoming too cold. Multiple effects of the mo: a food-deprived rat pulls a cord hanging from the veiling of the chamber. Pulling the cord produces an auditory stimulus such as a buzzer. In the presence of the buzzer, the rat presses a lever and receives a food pellet. Mo, sr+, sp: mos may also alter (increase or decrease) the punishing effectiveness of a stimulus, as well as the frequency (evoke or abate) of behaviors that have been punished by that stimulus. Learned mos then can be called conditioned motivating operations (cmos: unlearned mos are called unconditioned motivating operations (umos, the value-altering effect is either unlearned or learned, the behavior altering effect is always learned (for bother types)
