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Transcript
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