PY 105 Lecture Notes - Lecture 7: Reinforcement, Observational Learning, Reward System
Document Summary
Classical conditioning: explains why people have strong emotional reactions to neutral stimuli, ivan pavlov developed this. Argued that stimuli in the environment produced (cid:396)espo(cid:374)se"s: terminology. Dog hears a click and gets food whenever they hear it. Conditioned stimulus (cs) clicking sound or tone. Cs and ucs => cr and ucr: another example. Littler girl and her mom likes to take her to the garden. The little girl likes to go there. The next time they go the little girl gets bit by a snake and the little girl cries and experiences pain. The suggestion of the garden the frightens the little girl. The unconditioned stimulus is the snake bite. Conditioned and unconditioned response was crying or fear. Cs no longer followed by a ucs-the cr gradually weakens and eventually disappears: spontaneous recovery. Even if a conditioned response is extinguished in may spontaneously reappear again: stimulus generalization.
