- •Preface
- •Approach and Pedagogy
- •Chapter 1
- •Introducing Psychology
- •1.1 Psychology as a Science
- •The Problem of Intuition
- •Research Focus: Unconscious Preferences for the Letters of Our Own Name
- •Why Psychologists Rely on Empirical Methods
- •Levels of Explanation in Psychology
- •The Challenges of Studying Psychology
- •1.2 The Evolution of Psychology: History, Approaches, and Questions
- •Early Psychologists
- •Structuralism: Introspection and the Awareness of Subjective Experience
- •Functionalism and Evolutionary Psychology
- •Psychodynamic Psychology
- •Behaviorism and the Question of Free Will
- •Research Focus: Do We Have Free Will?
- •The Cognitive Approach and Cognitive Neuroscience
- •The War of the Ghosts
- •Social-Cultural Psychology
- •The Many Disciplines of Psychology
- •Psychology in Everyday Life: How to Effectively Learn and Remember
- •1.3 Chapter Summary
- •Chapter 2
- •Psychological Science
- •Psychological Journals
- •2.1 Psychologists Use the Scientific Method to Guide Their Research
- •The Scientific Method
- •Laws and Theories as Organizing Principles
- •The Research Hypothesis
- •Conducting Ethical Research
- •Characteristics of an Ethical Research Project Using Human Participants
- •Ensuring That Research Is Ethical
- •Research With Animals
- •APA Guidelines on Humane Care and Use of Animals in Research
- •Descriptive Research: Assessing the Current State of Affairs
- •Correlational Research: Seeking Relationships Among Variables
- •Experimental Research: Understanding the Causes of Behavior
- •Research Focus: Video Games and Aggression
- •2.3 You Can Be an Informed Consumer of Psychological Research
- •Threats to the Validity of Research
- •Psychology in Everyday Life: Critically Evaluating the Validity of Websites
- •2.4 Chapter Summary
- •Chapter 3
- •Brains, Bodies, and Behavior
- •Did a Neurological Disorder Cause a Musician to Compose Boléro and an Artist to Paint It 66 Years Later?
- •3.1 The Neuron Is the Building Block of the Nervous System
- •Neurons Communicate Using Electricity and Chemicals
- •Video Clip: The Electrochemical Action of the Neuron
- •Neurotransmitters: The Body’s Chemical Messengers
- •3.2 Our Brains Control Our Thoughts, Feelings, and Behavior
- •The Old Brain: Wired for Survival
- •The Cerebral Cortex Creates Consciousness and Thinking
- •Functions of the Cortex
- •The Brain Is Flexible: Neuroplasticity
- •Research Focus: Identifying the Unique Functions of the Left and Right Hemispheres Using Split-Brain Patients
- •Psychology in Everyday Life: Why Are Some People Left-Handed?
- •3.3 Psychologists Study the Brain Using Many Different Methods
- •Lesions Provide a Picture of What Is Missing
- •Recording Electrical Activity in the Brain
- •Peeking Inside the Brain: Neuroimaging
- •Research Focus: Cyberostracism
- •3.4 Putting It All Together: The Nervous System and the Endocrine System
- •Electrical Control of Behavior: The Nervous System
- •The Body’s Chemicals Help Control Behavior: The Endocrine System
- •3.5 Chapter Summary
- •Chapter 4
- •Sensing and Perceiving
- •Misperception by Those Trained to Accurately Perceive a Threat
- •4.1 We Experience Our World Through Sensation
- •Sensory Thresholds: What Can We Experience?
- •Link
- •Measuring Sensation
- •Research Focus: Influence without Awareness
- •4.2 Seeing
- •The Sensing Eye and the Perceiving Visual Cortex
- •Perceiving Color
- •Perceiving Form
- •Perceiving Depth
- •Perceiving Motion
- •Beta Effect and Phi Phenomenon
- •4.3 Hearing
- •Hearing Loss
- •4.4 Tasting, Smelling, and Touching
- •Tasting
- •Smelling
- •Touching
- •Experiencing Pain
- •4.5 Accuracy and Inaccuracy in Perception
- •How the Perceptual System Interprets the Environment
- •Video Clip: The McGurk Effect
- •Video Clip: Selective Attention
- •Illusions
- •The Important Role of Expectations in Perception
- •Psychology in Everyday Life: How Understanding Sensation and Perception Can Save Lives
- •4.6 Chapter Summary
- •Chapter 5
- •States of Consciousness
- •An Unconscious Killing
- •5.1 Sleeping and Dreaming Revitalize Us for Action
- •Research Focus: Circadian Rhythms Influence the Use of Stereotypes in Social Judgments
- •Sleep Stages: Moving Through the Night
- •Sleep Disorders: Problems in Sleeping
- •The Heavy Costs of Not Sleeping
- •Dreams and Dreaming
- •5.2 Altering Consciousness With Psychoactive Drugs
- •Speeding Up the Brain With Stimulants: Caffeine, Nicotine, Cocaine, and Amphetamines
- •Slowing Down the Brain With Depressants: Alcohol, Barbiturates and Benzodiazepines, and Toxic Inhalants
- •Opioids: Opium, Morphine, Heroin, and Codeine
- •Hallucinogens: Cannabis, Mescaline, and LSD
- •Why We Use Psychoactive Drugs
- •Research Focus: Risk Tolerance Predicts Cigarette Use
- •5.3 Altering Consciousness Without Drugs
- •Changing Behavior Through Suggestion: The Power of Hypnosis
- •Reducing Sensation to Alter Consciousness: Sensory Deprivation
- •Meditation
- •Video Clip: Try Meditation
- •Psychology in Everyday Life: The Need to Escape Everyday Consciousness
- •5.4 Chapter Summary
- •Chapter 6
- •Growing and Developing
- •The Repository for Germinal Choice
- •6.1 Conception and Prenatal Development
- •The Zygote
- •The Embryo
- •The Fetus
- •How the Environment Can Affect the Vulnerable Fetus
- •6.2 Infancy and Childhood: Exploring and Learning
- •The Newborn Arrives With Many Behaviors Intact
- •Research Focus: Using the Habituation Technique to Study What Infants Know
- •Cognitive Development During Childhood
- •Video Clip: Object Permanence
- •Social Development During Childhood
- •Knowing the Self: The Development of the Self-Concept
- •Video Clip: The Harlows’ Monkeys
- •Video Clip: The Strange Situation
- •Research Focus: Using a Longitudinal Research Design to Assess the Stability of Attachment
- •6.3 Adolescence: Developing Independence and Identity
- •Physical Changes in Adolescence
- •Cognitive Development in Adolescence
- •Social Development in Adolescence
- •Developing Moral Reasoning: Kohlberg’s Theory
- •Video Clip: People Being Interviewed About Kohlberg’s Stages
- •6.4 Early and Middle Adulthood: Building Effective Lives
- •Psychology in Everyday Life: What Makes a Good Parent?
- •Physical and Cognitive Changes in Early and Middle Adulthood
- •Menopause
- •Social Changes in Early and Middle Adulthood
- •6.5 Late Adulthood: Aging, Retiring, and Bereavement
- •Cognitive Changes During Aging
- •Dementia and Alzheimer’s Disease
- •Social Changes During Aging: Retiring Effectively
- •Death, Dying, and Bereavement
- •6.6 Chapter Summary
- •Chapter 7
- •Learning
- •My Story of Posttraumatic Stress Disorder
- •7.1 Learning by Association: Classical Conditioning
- •Pavlov Demonstrates Conditioning in Dogs
- •The Persistence and Extinction of Conditioning
- •The Role of Nature in Classical Conditioning
- •How Reinforcement and Punishment Influence Behavior: The Research of Thorndike and Skinner
- •Video Clip: Thorndike’s Puzzle Box
- •Creating Complex Behaviors Through Operant Conditioning
- •7.3 Learning by Insight and Observation
- •Observational Learning: Learning by Watching
- •Video Clip: Bandura Discussing Clips From His Modeling Studies
- •Research Focus: The Effects of Violent Video Games on Aggression
- •7.4 Using the Principles of Learning to Understand Everyday Behavior
- •Using Classical Conditioning in Advertising
- •Video Clip: Television Ads
- •Psychology in Everyday Life: Operant Conditioning in the Classroom
- •Reinforcement in Social Dilemmas
- •7.5 Chapter Summary
- •Chapter 8
- •Remembering and Judging
- •She Was Certain, but She Was Wrong
- •Differences between Brains and Computers
- •Video Clip: Kim Peek
- •8.1 Memories as Types and Stages
- •Explicit Memory
- •Implicit Memory
- •Research Focus: Priming Outside Awareness Influences Behavior
- •Stages of Memory: Sensory, Short-Term, and Long-Term Memory
- •Sensory Memory
- •Short-Term Memory
- •8.2 How We Remember: Cues to Improving Memory
- •Encoding and Storage: How Our Perceptions Become Memories
- •Research Focus: Elaboration and Memory
- •Using the Contributions of Hermann Ebbinghaus to Improve Your Memory
- •Retrieval
- •Retrieval Demonstration
- •States and Capital Cities
- •The Structure of LTM: Categories, Prototypes, and Schemas
- •The Biology of Memory
- •8.3 Accuracy and Inaccuracy in Memory and Cognition
- •Source Monitoring: Did It Really Happen?
- •Schematic Processing: Distortions Based on Expectations
- •Misinformation Effects: How Information That Comes Later Can Distort Memory
- •Overconfidence
- •Heuristic Processing: Availability and Representativeness
- •Salience and Cognitive Accessibility
- •Counterfactual Thinking
- •Psychology in Everyday Life: Cognitive Biases in the Real World
- •8.4 Chapter Summary
- •Chapter 9
- •Intelligence and Language
- •How We Talk (or Do Not Talk) about Intelligence
- •9.1 Defining and Measuring Intelligence
- •General (g) Versus Specific (s) Intelligences
- •Measuring Intelligence: Standardization and the Intelligence Quotient
- •The Biology of Intelligence
- •Is Intelligence Nature or Nurture?
- •Psychology in Everyday Life: Emotional Intelligence
- •9.2 The Social, Cultural, and Political Aspects of Intelligence
- •Extremes of Intelligence: Retardation and Giftedness
- •Extremely Low Intelligence
- •Extremely High Intelligence
- •Sex Differences in Intelligence
- •Racial Differences in Intelligence
- •Research Focus: Stereotype Threat
- •9.3 Communicating With Others: The Development and Use of Language
- •The Components of Language
- •Examples in Which Syntax Is Correct but the Interpretation Can Be Ambiguous
- •The Biology and Development of Language
- •Research Focus: When Can We Best Learn Language? Testing the Critical Period Hypothesis
- •Learning Language
- •How Children Learn Language: Theories of Language Acquisition
- •Bilingualism and Cognitive Development
- •Can Animals Learn Language?
- •Video Clip: Language Recognition in Bonobos
- •Language and Perception
- •9.4 Chapter Summary
- •Chapter 10
- •Emotions and Motivations
- •Captain Sullenberger Conquers His Emotions
- •10.1 The Experience of Emotion
- •Video Clip: The Basic Emotions
- •The Cannon-Bard and James-Lange Theories of Emotion
- •Research Focus: Misattributing Arousal
- •Communicating Emotion
- •10.2 Stress: The Unseen Killer
- •The Negative Effects of Stress
- •Stressors in Our Everyday Lives
- •Responses to Stress
- •Managing Stress
- •Emotion Regulation
- •Research Focus: Emotion Regulation Takes Effort
- •10.3 Positive Emotions: The Power of Happiness
- •Finding Happiness Through Our Connections With Others
- •What Makes Us Happy?
- •10.4 Two Fundamental Human Motivations: Eating and Mating
- •Eating: Healthy Choices Make Healthy Lives
- •Obesity
- •Sex: The Most Important Human Behavior
- •The Experience of Sex
- •The Many Varieties of Sexual Behavior
- •Psychology in Everyday Life: Regulating Emotions to Improve Our Health
- •10.5 Chapter Summary
- •Chapter 11
- •Personality
- •Identical Twins Reunited after 35 Years
- •11.1 Personality and Behavior: Approaches and Measurement
- •Personality as Traits
- •Example of a Trait Measure
- •Situational Influences on Personality
- •The MMPI and Projective Tests
- •Psychology in Everyday Life: Leaders and Leadership
- •11.2 The Origins of Personality
- •Psychodynamic Theories of Personality: The Role of the Unconscious
- •Id, Ego, and Superego
- •Research Focus: How the Fear of Death Causes Aggressive Behavior
- •Strengths and Limitations of Freudian and Neo-Freudian Approaches
- •Focusing on the Self: Humanism and Self-Actualization
- •Research Focus: Self-Discrepancies, Anxiety, and Depression
- •Studying Personality Using Behavioral Genetics
- •Studying Personality Using Molecular Genetics
- •Reviewing the Literature: Is Our Genetics Our Destiny?
- •11.4 Chapter Summary
- •Chapter 12
- •Defining Psychological Disorders
- •When Minor Body Imperfections Lead to Suicide
- •12.1 Psychological Disorder: What Makes a Behavior “Abnormal”?
- •Defining Disorder
- •Psychology in Everyday Life: Combating the Stigma of Abnormal Behavior
- •Diagnosing Disorder: The DSM
- •Diagnosis or Overdiagnosis? ADHD, Autistic Disorder, and Asperger’s Disorder
- •Attention-Deficit/Hyperactivity Disorder (ADHD)
- •Autistic Disorder and Asperger’s Disorder
- •12.2 Anxiety and Dissociative Disorders: Fearing the World Around Us
- •Generalized Anxiety Disorder
- •Panic Disorder
- •Phobias
- •Obsessive-Compulsive Disorders
- •Posttraumatic Stress Disorder (PTSD)
- •Dissociative Disorders: Losing the Self to Avoid Anxiety
- •Dissociative Amnesia and Fugue
- •Dissociative Identity Disorder
- •Explaining Anxiety and Dissociation Disorders
- •12.3 Mood Disorders: Emotions as Illness
- •Behaviors Associated with Depression
- •Dysthymia and Major Depressive Disorder
- •Bipolar Disorder
- •Explaining Mood Disorders
- •Research Focus: Using Molecular Genetics to Unravel the Causes of Depression
- •12.4 Schizophrenia: The Edge of Reality and Consciousness
- •Symptoms of Schizophrenia
- •Explaining Schizophrenia
- •12.5 Personality Disorders
- •Borderline Personality Disorder
- •Research Focus: Affective and Cognitive Deficits in BPD
- •Antisocial Personality Disorder (APD)
- •12.6 Somatoform, Factitious, and Sexual Disorders
- •Somatoform and Factitious Disorders
- •Sexual Disorders
- •Disorders of Sexual Function
- •Paraphilias
- •12.7 Chapter Summary
- •Chapter 13
- •Treating Psychological Disorders
- •Therapy on Four Legs
- •13.1 Reducing Disorder by Confronting It: Psychotherapy
- •DSM-IV-TR Criteria for Diagnosing Attention-Deficit/Hyperactivity Disorder (ADHD)
- •Psychology in Everyday Life: Seeking Treatment for Psychological Difficulties
- •Psychodynamic Therapy
- •Important Characteristics and Experiences in Psychoanalysis
- •Humanistic Therapies
- •Behavioral Aspects of CBT
- •Cognitive Aspects of CBT
- •Combination (Eclectic) Approaches to Therapy
- •13.2 Reducing Disorder Biologically: Drug and Brain Therapy
- •Drug Therapies
- •Using Stimulants to Treat ADHD
- •Antidepressant Medications
- •Antianxiety Medications
- •Antipsychotic Medications
- •Direct Brain Intervention Therapies
- •13.3 Reducing Disorder by Changing the Social Situation
- •Group, Couples, and Family Therapy
- •Self-Help Groups
- •Community Mental Health: Service and Prevention
- •Some Risk Factors for Psychological Disorders
- •Research Focus: The Implicit Association Test as a Behavioral Marker for Suicide
- •13.4 Evaluating Treatment and Prevention: What Works?
- •Effectiveness of Psychological Therapy
- •Research Focus: Meta-Analyzing Clinical Outcomes
- •Effectiveness of Biomedical Therapies
- •Effectiveness of Social-Community Approaches
- •13.5 Chapter Summary
- •Chapter 14
- •Psychology in Our Social Lives
- •Binge Drinking and the Death of a Homecoming Queen
- •14.1 Social Cognition: Making Sense of Ourselvesand Others
- •Perceiving Others
- •Forming Judgments on the Basis of Appearance: Stereotyping, Prejudice, and Discrimination
- •Implicit Association Test
- •Research Focus: Forming Judgments of People in Seconds
- •Close Relationships
- •Causal Attribution: Forming Judgments by Observing Behavior
- •Attitudes and Behavior
- •14.2 Interacting With Others: Helping, Hurting, and Conforming
- •Helping Others: Altruism Helps Create Harmonious Relationships
- •Why Are We Altruistic?
- •How the Presence of Others Can Reduce Helping
- •Video Clip: The Case of Kitty Genovese
- •Human Aggression: An Adaptive yet Potentially Damaging Behavior
- •The Ability to Aggress Is Part of Human Nature
- •Negative Experiences Increase Aggression
- •Viewing Violent Media Increases Aggression
- •Video Clip
- •Research Focus: The Culture of Honor
- •Conformity and Obedience: How Social Influence Creates Social Norms
- •Video Clip
- •Do We Always Conform?
- •14.3 Working With Others: The Costs and Benefits of Social Groups
- •Working in Front of Others: Social Facilitation and Social Inhibition
- •Working Together in Groups
- •Psychology in Everyday Life: Do Juries Make Good Decisions?
- •Using Groups Effectively
- •14.4 Chapter Summary
Other research findings also support the general principle that punishment is generally less effective than reinforcement in changing behavior. In a recent meta-analysis, Gershoff (2002) [13] found that although children who were spanked by their parents were more likely to immediately comply with the parents’ demands, they were also more aggressive, showed less ability to control aggression, and had poorer mental health in the long term than children who were not spanked. The problem seems to be that children who are punished for bad behavior are likely to change their behavior only to avoid the punishment, rather than by internalizing the norms of being good for its own sake. Punishment also tends to generate anger, defiance, and a desire for revenge. Moreover, punishment models the use of aggression and ruptures the important relationship between the teacher and the learner (Kohn, 1993). [14]
Reinforcement in Social Dilemmas
The basic principles of reinforcement, reward, and punishment have been used to help understand a variety of human behaviors (Rotter, 1945; Bandura, 1977; Miller & Dollard, 1941). [15] The general idea is that, as predicted by principles of operant learning and the law of effect, people act in ways that maximize theiroutcomes, where outcomes are defined as the presence of reinforcers and the absence of punishers.
Consider, for example, a situation known as the commons dilemma, as proposed by the ecologist Garrett Hardin (1968). [16] Hardin noted that in many European towns there was at one time a centrally located pasture, known as the commons, which was shared by the inhabitants of the village to graze their livestock. But the commons was not always used wisely. The problem was that each individual who owned livestock wanted to be able to use the commons to graze his or her own animals. However, when each group member took advantage of the commons by grazing many animals, the commons became overgrazed, the pasture died, and the commons was destroyed.
Although Hardin focused on the particular example of the commons, the basic dilemma of individual desires versus the benefit of the group as whole can also be found in many contemporary public goods issues, including the use of limited natural resources, air pollution, and public land. In large cities most people may prefer the convenience of driving their own car to work each day rather than taking public transportation. Yet this behavior uses up public goods (the space on limited roadways, crude oil reserves, and clean air). People are lured into the
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dilemma by short-term rewards, seemingly without considering the potential long-term costs of the behavior, such as air pollution and the necessity of building even more highways.
A social dilemma such as the commons dilemma is a situation in which the behavior that creates the most positive outcomes for the individual may in the long term lead to negative consequences for the group as a whole. The dilemmas are arranged in a way that it is easy to be selfish, because the personally beneficial choice (such as using water during a water shortage or driving to work alone in one’s own car) produces reinforcements for the individual. Furthermore, social dilemmas tend to work on a type of “time delay.” The problem is that, because the long-term negative outcome (the extinction of fish species or dramatic changes in the earth’s climate) is far away in the future and the individual benefits are occurring right now, it is difficult for an individual to see how many costs there really are. The paradox, of course, is that if everyone takes the personally selfish choice in an attempt to maximize his or her own outcomes, the longterm result is poorer outcomes for every individual in the group. Each individual prefers to make use of the public goods for himself or herself, whereas the best outcome for the group as a whole is to use the resources more slowly and wisely.
One method of understanding how individuals and groups behave in social dilemmas is to create such situations in the laboratory and observe how people react to them. The best known of these laboratory simulations is called theprisoner’s dilemma game (Poundstone, 1992). [17] This
game represents a social dilemma in which the goals of the individual compete with the goals of another individual (or sometimes with a group of other individuals). Like all social dilemmas, the prisoner’s dilemma assumes that individuals will generally try to maximize their own outcomes in their interactions with others.
In the prisoner’s dilemma game, the participants are shown a payoff matrix in which numbers are used to express the potential outcomes for each of the players in the game, given the decisions each player makes. The payoffs are chosen beforehand by the experimenter to create a situation that models some real-world outcome. Furthermore, in the prisoner’s dilemma game, the payoffs are normally arranged as they would be in a typical social dilemma, such that each individual is better off acting in his or her immediate self-interest, and yet if all individuals act according to their self-interests, then everyone will be worse off.
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In its original form, the prisoner’s dilemma game involves a situation in which two prisoners (we’ll call them Frank and Malik) have been accused of committing a crime. The police believe that the two worked together on the crime, but they have only been able to gather enough evidence to convict each of them of a more minor offense. In an attempt to gain more evidence, and thus to be able to convict the prisoners of the larger crime, each of the prisoners is interrogated individually, with the hope that he will confess to having been involved in the more major crime, in return for a promise of a reduced sentence if he confesses first. Each prisoner can make either the cooperative choice(which is to not confess) or the competitive choice (which is to confess).
The incentives for either confessing or not confessing are expressed in a payoff matrix such as the one shown in Figure 7.11 "The Prisoner’s Dilemma". The top of the matrix represents the two choices that Malik might make (to either confess that he did the crime or not confess), and the side of the matrix represents the two choices that Frank might make (also to either confess or not confess). The payoffs that each prisoner receives, given the choices of each of the two prisoners, are shown in each of the four squares.
Figure 7.11 The Prisoner’s Dilemma
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In the prisoner’s dilemma game, two suspected criminals are interrogated separately. The matrix indicates the outcomes for each prisoner, measured as the number of years each is sentenced to prison, as a result of each combination of cooperative (don’t confess) and competitive (confess) decisions. Outcomes for Malik are in black and outcomes for Frank are in grey.
If both prisoners take the cooperative choice by not confessing (the situation represented in the upper left square of the matrix), there will be a trial, the limited available information will be used to convict each prisoner, and they each will be sentenced to a relatively short prison term of three years. However, if either of the prisoners confesses, turning “state’s evidence” against the other prisoner, then there will be enough information to convict the other prisoner of the larger crime, and that prisoner will receive a sentence of 30 years, whereas the prisoner who confesses will get off free. These outcomes are represented in the lower left and upper right squares of the matrix. Finally, it is possible that both players confess at the same time. In this case there is no need for a trial, and in return the prosecutors offer a somewhat reduced sentence (of 10 years) to each of the prisoners.
The prisoner’s dilemma has two interesting characteristics that make it a useful model of a social dilemma. For one, the prisoner’s dilemma is arranged such that a positive outcome for one player does not necessarily mean a negative outcome for the other player. If you consider again the matrix in Figure 7.11 "The Prisoner’s Dilemma", you can see that if one player takes the cooperative choice (to not confess) and the other takes the competitive choice (to confess), then the prisoner who cooperates loses, whereas the other prisoner wins. However, if both prisoners make the cooperative choice, each remaining quiet, then neither gains more than the other, and both prisoners receive a relatively light sentence. In this sense both players can win at the same time.
Second, the prisoner’s dilemma matrix is arranged such that each individual player is motivated to take the competitive choice, because this choice leads to a higher payoff regardless of what the other player does. Imagine for a moment that you are Malik, and you are trying to decide whether to cooperate (don’t confess) or to compete (confess). And imagine that you are not really sure what Frank is going to do. Remember the goal of the individual is to maximize outcomes. The values in the matrix make it clear that if you think that Frank is going to confess,
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you should confess yourself (to get 10 rather than 30 years in prison). And, it is also clear that if you think Frank is not going to confess, you should still confess (to get 0 rather than 3 years in prison). So the matrix is arranged such that the “best” alternative for each player, at least in the sense of pure reward and self-interest, is to make the competitive choice, even though in the end both players would prefer the combination in which both players cooperate to the one in which they both compete.
Although initially specified in terms of the two prisoners, similar payoff matrices can be used to predict behavior in many different types of dilemmas involving two or more parties and including choices of helping and not helping, working and loafing, and paying and not paying debts. For instance, we can use the prisoner’s dilemma to help us understand roommates living together in a house who might not want to contribute to the housework. Each of them would be better off if they relied on the other to clean the house. Yet if neither of them makes an effort to clean the house (the cooperative choice), the house becomes a mess and they will both be worse off.
K E Y T A K E A W A Y S
•Learning theories have been used to change behaviors in many areas of everyday life.
•Some advertising uses classical conditioning to associate a pleasant response with a product.
•Rewards are frequently and effectively used in education but must be carefully designed to be contingent on performance and to avoid undermining interest in the activity.
•Social dilemmas, such as the prisoner’s dilemma, can be understood in terms of a desire to maximize one’s outcomes
in a competitive relationship.
E X E R C I S E S A N D C R I T I C A L T H I N K I N G
1.Find and share with your class some examples of advertisements that make use of classical conditioning to create positive attitudes toward products.
2.Should parents use both punishment as well as reinforcement to discipline their children? On what principles of learning do you base your opinion?
3.Think of a social dilemma other than one that has been discussed in this chapter, and explain people’s behavior in it in terms of principles of learning.
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