PSYC 337 Lecture Notes - Lecture 18: Psychoactive Drug, Castrato, Hans Selye
1 Dec 2016
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Motivational state e. g. deprivation, thirst, hunger, sex, social contact. Delay of reinforcement delay of gratification (grade 1: grades don"t work(cid:524) Schedules: 1) shape nature of behaviour producing increased responding. According to time: fixed interval (reinforce every 5 minutes) vs. variable. Generalization and 2) produce resistance to extinction interval (reinforce randomly) According to number: fixed ratio (reinforce every 2 times) vs. variable ratio (reinforcement randomly) Variable ratio: high resistance to extinction steady rate without pauses. Variable interval: high resistance, low, steady rate of response. Fixed ratio: high levels of responding with short pause for reinforcement. Fixed interval (only reinforced after 5 minutes): so do nothing then work really hard (like for exams) Variable schedules lead to more difficult extinction. Shaping new behaviours quick extinction but then it spiked again b/c grandmother reinforced. Work backwards, reinforce every time they do a step. We can induce or inhibit b through modeling. Kid bed reinforcement every time until they cold turkey stopped, led to.
