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葉錦熙 www.yipsir.com.hk 1 Schedule 1. Associative learning – – classical conditioning operant conditiong 2. Types of reinforcement and punishment – positive vs negative, reinforcement vs punishment 3. Reinforcement schedule – fixed vs variable, ratio vs interval 4. In-class group exercise 2 Learning Defined – relatively permanent change in an behavior due to experience e.g. social, work, emotion 3 Associative Learning Learning that two events occur together - either two stimuli - or a response and its consequences Two Kinds of Associative Learning 1. Classical Conditioning 2. Operant Conditioning 4 Two related events: Classical Conditioning Stimulus 1 Lightning Stimulus 2 Thurder We learn to associate two stimuli Result after repetition Stimulus We see lighting Response We will anticipating thunder 5 Operant Conditioning Event 1 Event 2 Seal learns to expect a snack for its show-off behavior Learning to associate two events 6 Classical or Pavlovian Conditioning Ivan Pavlov – 1849-1936 – Russian physician / neurophysiologist – studied digestive secretions – invented Classical Conditioning 7 Classical or Pavlovian Conditioning Pavlov’s device for recording salivation 8 Pavlov’s Classic Experiment Before Conditioning UCS (food in mouth) UCR (salivation) During Conditioning Neutral stimulus (tone) No salivation After Conditioning UCS (food in mouth) Neutral stimulus (tone) UCR (salivation) CS (tone) CR (salivation) 9 Nausea Conditioning among Cancer Patients ? (drug) (nausea) (waiting room) (drug) (nausea) (waiting room) (nausea) 10 Nausea Conditioning among Cancer Patients UCS (drug) ? (nausea) (waiting room) (drug) (nausea) (waiting room) (nausea) 11 Nausea Conditioning among Cancer Patients UCS (drug) UCR (nausea) ? (waiting room) (drug) (nausea) (waiting room) (nausea) 12 Nausea Conditioning among Cancer Patients UCS (drug) UCR (nausea) NS (waiting room) ? (drug) (nausea) (waiting room) (nausea) 13 Nausea Conditioning among Cancer Patients UCS (drug) UCR (nausea) NS (waiting room) UCS (drug) ? (nausea) (waiting room) (nausea) 14 Nausea Conditioning among Cancer Patients UCS (drug) UCR (nausea) NS (waiting room) UCS (drug) UCR (nausea) ? (waiting room) (nausea) 15 Nausea Conditioning among Cancer Patients UCS (drug) UCR (nausea) NS (waiting room) CS (waiting room) UCS (drug) UCR (nausea) ? (nausea) 16 Nausea Conditioning among Cancer Patients UCS (drug) UCR (nausea) NS (waiting room) CS (waiting room) UCS (drug) UCR (nausea) CR (nausea) 17 Classical or Pavlovian Conditioning ? (passionate kiss) ? (sexual arousal) (onion breath) (passionate Kiss) (sexual arousal) (onion breath) (sexual arousal) 18 Classical or Pavlovian Conditioning UCS (passionate kiss) ? (onion breath) UCR (sexual arousal) ? (passionate Kiss) (onion breath) (sexual arousal) ? (sexual arousal) 19 Classical or Pavlovian Conditioning UCS (passionate kiss) NS (onion breath) ? (onion breath) UCR (sexual arousal) UCS (passionate Kiss) ? (sexual arousal) UCR (sexual arousal) 20 Classical or Pavlovian Conditioning UCS (passionate kiss) NS (onion breath) CS (onion breath) UCR (sexual arousal) UCS (passionate Kiss) CR (sexual arousal) UCR (sexual arousal) 21 Classical or Pavlovian Conditioning 1. Unconditioned Stimulus (UCS) – stimulus that automatically triggers a response 2. Unconditioned Response (UCR) – unlearned, automatic response to the unconditioned stimulus • salivation when food is in the mouth 22 Classical or Pavlovian Conditioning 1. Conditioned Stimulus (CS) – an originally neutral stimulus that becomes associated with an UCS and therefore triggers a conditioned response 2. Conditioned Response (CR) – learned response to a previously neutral conditioned stimulus 23 Classical or Pavlovian Conditioning Generalization – tendency for stimuli similar to the conditioned stimulus to evoke similar responses 24 Little Albert’s Fear Conditioning UCS (loud noise) UCR (fear) NS (rat) UCS (loud noise) CS (rat) UCR (fear) CR (fear) Stimulus similar to rat (such as rabbit) Conditioned fear (generalization) 25 Operant Conditioning Behavior (???) (???) Consequence (???) Application: 「操作過程 (operant procedure) 對兒童及青少年來說 是有效的治療策略,包括社會增強 (social reinforcement)、活動增強 (activities as reinforcement)、代幣增強 (token reinforcement)、團 體偶發事作、物質增強 (material reinforcement) 26 Types of Reinforcement and Punishment Type Definition Effect Positive Delivery of a pleasant stimulus the reinforce- that follows a behavioral behavior response ment Negative Removal of an unpleasant reinforce- stimulus after a behavior response ment the behavior Positive Punishment Presentation of an unpleasant stimulus after a behavioral response the behavior Negative Punishment Removal of an pleasant stimulus after a behavioral response the behavior 27 Activity- 4 kinds of reinforcement Determine which kind of reinforcement or punishment is exercised to the following behaviour? 組員每節出席小組活動皆可獲發3張貼紙 (____________)。唯每次違反小組守則或破壞 小 組 秩 序 , 則 會 收 到 1 個 口 頭 警 告 (____________),並記錄在黑板上,當收到3 個警告後,則該節最多只能取得1張貼紙 (____________)。若組員再次積極投入參與小 組活動,幫助組員,就能減去黑板上的1個警 告(____________)。 28 Activity- 4 kinds of reinforcement Determine which kind of reinforcement or punishment is exercised to the following behaviour? 組員每節出席小組活動皆可獲發3張貼紙 (+ve reinforcement)。唯每次違反小組守則 或破壞小組秩序,則會收到1個口頭警告 (____________),並記錄在黑板上,當收到3 個警告後,則該節最多只能取得1張貼紙 (____________)。若組員再次積極投入參與小 組活動,幫助組員,就能減去黑板上的1個警 告(____________)。 29 Activity- 4 kinds of reinforcement Determine which kind of reinforcement or punishment is exercised to the following behaviour? 組員每節出席小組活動皆可獲發3張貼紙 (+ve reinforcement)。唯每次違反小組守則 或破壞小組秩序,則會收到1個口頭警告 (+ve punishment),並記錄在黑板上,當收到 3個警告後,則該節最多只能取得1張貼紙 (____________)。若組員再次積極投入參與小 組活動,幫助組員,就能減去黑板上的1個警 告(____________)。 30 Activity- 4 kinds of reinforcement Determine which kind of reinforcement or punishment is exercised to the following behaviour? 組員每節出席小組活動皆可獲發3張貼紙 (+ve reinforcement)。唯每次違反小組守則 或破壞小組秩序,則會收到1個口頭警告 (+ve punishment),並記錄在黑板上,當收到 3個警告後,則該節最多只能取得1張貼紙 (-ve punishment)。若組員再次積極投入參與 小組活動,幫助組員,就能減去黑板上的1個 警告(____________)。 31 Activity- 4 kinds of reinforcement Determine which kind of reinforcement or punishment is exercised to the following behaviour? 組員每節出席小組活動皆可獲發3張貼紙 (+ve reinforcement)。唯每次違反小組守則 或破壞小組秩序,則會收到1個口頭警告 (+ve punishment),並記錄在黑板上,當收到 3個警告後,則該節最多只能取得1張貼紙 (-ve punishment)。若組員再次積極投入參與 小組活動,幫助組員,就能減去黑板上的1個 警告(-ve reinforcement)。 32 Operant Conditioning— Schedules of Reinforcement 1. Fixed ratio schedule 2. Variable ratio schedule 3. Fixed interval schedule 4. Variable interval schedule 33 Activity - 4 kinds of reinforcement schedules Determine which kind of reinforcement schedules is applied to the following behaviors? 1. Every month, I shall give $500 pocket money to my grandma. 2. Every time I pay visit to my grandma, I shall give her $500. 3. Depending on my financial situation, I shall give my grandma sometimes $500, $800, $1000 or nothing at every visits. 4. A company issues bonus to her employees irregularly across the last financial year. 34 Activity - 4 kinds of reinforcement schedules Determine which kind of reinforcement schedules is applied to the following behaviors? 1. Every month, I shall give $500 pocket money to my grandma. 35 Activity - 4 kinds of reinforcement schedules Determine which kind of reinforcement schedules is applied to the following behaviors? 1. Every month, I shall give $500 pocket money to my grandma. Fixed interval 36 Activity - 4 kinds of reinforcement schedules Determine which kind of reinforcement schedules is applied to the following behaviors? 1. Every month, I shall give $500 pocket money to my grandma. Fixed interval 2. Every time I pay visit to my grandma, I shall give her $500. 37 Activity - 4 kinds of reinforcement schedules Determine which kind of reinforcement schedules is applied to the following behaviors? 1. Every month, I shall give $500 pocket money to my grandma. Fixed interval 2. Every time I pay visit to my grandma, I shall give her $500. Fixed ratio 38 Activity - 4 kinds of reinforcement schedules Determine which kind of reinforcement schedules is applied to the following behaviors? 1. Every month, I shall give $500 pocket money to my grandma. Fixed interval 2. Every time I pay visit to my grandma, I shall give her $500. Fixed ratio 3. Depending on my financial situation, I shall give my grandma sometimes $500, $800, $1000 or nothing at every visits. 39 Activity - 4 kinds of reinforcement schedules Determine which kind of reinforcement schedules is applied to the following behaviors? 1. Every month, I shall give $500 pocket money to my grandma. Fixed interval 2. Every time I pay visit to my grandma, I shall give her $500. Fixed ratio 3. Depending on my financial situation, I shall give my grandma sometimes $500, $800, $1000 or nothing at every visits. Variable ratio 40 Activity - 4 kinds of reinforcement schedules Determine which kind of reinforcement schedules is applied to the following behaviors? 1. Every month, I shall give $500 pocket money to my grandma. Fixed interval 2. Every time I pay visit to my grandma, I shall give her $500. Fixed ratio 3. Depending on my financial situation, I shall give my grandma sometimes $500, $800, $1000 or nothing at every visits. Variable ratio 4. A company issues bonus to her employees irregularly across the last financial year. 41 Activity - 4 kinds of reinforcement schedules Determine which kind of reinforcement schedules is applied to the following behaviors? 1. Every month, I shall give $500 pocket money to my grandma. Fixed interval 2. Every time I pay visit to my grandma, I shall give her $500. Fixed ratio 3. Depending on my financial situation, I shall give my grandma sometimes $500, $800, $1000 or nothing at every visits. Variable ratio 4. A company issues bonus to her employees irregularly across the last financial year. Variable interval 42 Classical or Pavlovian Conditioning 1. Acquisition – the initial stage of learning, during which a response is established and gradually strengthened (smoking, drug, video game, gambling, hen phobia) 43 Classical or Pavlovian Conditioning 2. Extinction – diminishing a conditioned response – occurs when an unconditioned stimulus does not follow a conditioned stimulus 44 Classical or Pavlovian Conditioning 3. Spontaneous recovery – reappearance, after a rest period, of an extinguished conditioned response 4. Generalization – tendency for stimuli similar to the conditioned stimulus to evoke similar responses 45 In-class group assignment 1. The aim of the assignment is to encourage you to apply what you have learnt in the lecture to your daily life. 2. Try to think of examples in your daily life to explain the following concepts / theories. Do not use the examples quoted in the lecture or tutorial. You can illustrate your examples by using figures and text description. 46 The end 47