Core concepts 5.4 word wise

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If you’re wondering why we’re bringing you a new edition of Psychology: Core Concepts . . .

1 In the new seventh edition, we feature new cutting-edge research on the neuroscience of social interaction, cul- tural influences on perception, daydreaming, taste, and meditation, as well as updates on bullying, the slower rise of IQ scores (the Flynn effect) in developed coun- tries, the myth of multitasking, and much more. We also introduce readers to a groundbreaking modification of Maslow’s famous hierarchy of needs, newly framed by evolutionary psychologists.

2 Our lead author Philip Zimbardo has recently published a detailed description and analysis of his famous Stanford Prison Experiment in The Lucifer Effect: Understanding How Good People Turn Evil. We are pleased to include in Psychology: Core Concepts some of the insights he presented in Lucifer—particularly the notion of the effect of impersonal social systems, as well as social situations, on human behavior. Ours is the only introductory text in which you will find a discussion of how these social systems, such as organizations and bureaucracies, create a context that can profoundly influence the behavior of groups and individuals.

3 Dr. Zimbardo has also done important new work on the differences among people in their time perspective, re- ferring to a focus on the past, the present, or the future. This text is the only introduction to psychology to dis- cuss the powerful influence of time perspective on our decisions and actions.

4 In this edition, Read on MyPsychLab icons appear in the margins indicating that additional readings are

available for students to explore. For example, one of the Read features in Chapter 3 (Sensation and Percep- tion) deals with the classic study of backward masking. In Chapter 12 (Disorders and Therapy), you can read more about an African perspective on mental disorder.

5 One of our goals in this new edition is, again, to help you learn to “think like psychologists.” To do so, we have placed new emphasis on two kinds of psychological think- ing: (1) problem solving and (2) critical thinking. Every chapter begins with a Problem and ends with a critical analysis of an important psychological question, such as gender differences or repressed memory.

6 We have made a special effort in the seventh edition to provide clues throughout the chapter to help you un- derstand the solution to the chapter-opening Problem— which proved to be a popular feature in the last edition. The Chapter Summary now gives a brief “answer” to the problem as well.

7 We have designed the Critical Thinking applications at the end of each chapter to build upon a set of critical thinking skills introduced in Chapter One. Each of these focuses on an issue that is popularly misunderstood (e.g., the Mozart Effect) or contentious within the field (e.g., the evidence- based practice debate within clinical psychology). In this edition, we have also included the gist of the Critical Thinking section in the Chapter Summary.

8 Reflecting advances in multicultural and cross-cultural research, we have added even more coverage of culture and gender throughout the text. Our goal here is two- fold: We want you to see the relevance of psychology in your life, and we want you to understand that psychol- ogy is the science of behavior and mental processes that both generalizes and differs across cultures.

Why Do You Need This New Edition?

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Psychology

Philip G. Zimbardo Stanford University

Robert L. Johnson Umpqua Community College

Vivian McCann Portland Community College

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Seventh Edition

Core Concepts

Student Edition ISBN-10: 0-205-18346-8

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Library of Congress Cataloging-in-Publication Data

Zimbardo, Philip G.

Psychology : core concepts / Philip G. Zimbardo, Robert L. Johnson, Vivian McCann. -- 7th ed.

p. cm.

Includes bibliographical references and index.

ISBN-13: 978-0-205-18346-3

ISBN-10: 0-205-18346-8

1. Psychology. I. Johnson, Robert L. (Robert Lee) II. McCann, Vivian. III. Title.

BF121.Z53 2012

150—dc23

2011027587

1 0 9 8 7 6 5 4 3 2 1

1 Mind, Behavior, and Psychological Science 2 2 Biopsychology, Neuroscience, and Human Nature 40 3 Sensation and Perception 86 4 Learning and Human Nurture 132 5 Memory 170 6 Thinking and Intelligence 212 7 Development Over the Lifespan 264 8 States of Consciousness 322 9 Motivation and Emotion 362 10 Personality: Theories of the Whole Person 412 11 Social Psychology 458 12 Psychological Disorders 514 13 Therapies for Psychological Disorders 554 14 From Stress to Health and Well-Being 596 Glossary G-1 References R-1 Answers to Discovering Psychology Program Review Questions A-1 Photo Credits C-1 Name Index I-1 Subject Index I-7

B R I E F C O N T E N T S

v

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vii

C O N T E N T S

CHAPTER 1 Mind, Behavior, and Psychological Science 2

PROBLEM: How would psychologists test the claim that sugar makes children hyperactive? 3

1.1 What Is Psychology—And What Is It Not? 4 Psychology: It’s More Than You Think 4 Psychology Is Not Psychiatry 6 Thinking Critically about Psychology

and Pseudo-Psychology 7

PSYCHOLOGY MATTERS: Using Psychology to Learn Psychology 10

1.2 What Are Psychology’s Six Main Perspectives? 11 Separation of Mind and Body and the Modern Biological

Perspective 12 The Founding of Scientific Psychology and the Modern

Cognitive Perspective 13 The Behavioral Perspective: Focusing on Observable

Behavior 16

The Whole-Person Perspectives: Psychodynamic, Humanistic, and Trait and Temperament Psychology 17

The Developmental Perspective: Changes Arising from Nature and Nurture 19

The Sociocultural Perspective: The Individual in Context 19 The Changing Face of Psychology 20

PSYCHOLOGY MATTERS: Psychology as a Major 22

1.3 How Do Psychologists Develop New Knowledge? 23 Four Steps in the Scientific Method 24 Five Types of Psychological Research 27 Controlling Biases in Psychological Research 31 Ethical Issues in Psychological Research 32

PSYCHOLOGY MATTERS: The Perils of Pseudo-Psychology 33

CRITICAL THINKING APPLIED: Facilitated Communication 35

Chapter Summary 36 Discovering Psychology Viewing Guide 38

PROBLEM: What does Jill Bolte Taylor’s experience teach us about how our brain is organized and about its amazing ability to adapt? 42

2.1 How Are Genes and Behavior Linked? 43 Evolution and Natural Selection 43 Genetics and Inheritance 45

PSYCHOLOGY MATTERS: Choosing Your Children’s Genes 48

2.2 How Does the Body Communicate Internally? 49 The Neuron: Building Block of the Nervous System 50 The Nervous System 56 The Endocrine System 58

PSYCHOLOGY MATTERS: How Psychoactive Drugs Affect the Nervous System 60

2.3 How Does the Brain Produce Behavior and Mental Processes? 62 Windows on the Brain 63 Three Layers of the Brain 65 Lobes of the Cerebral Cortex 69 Cerebral Dominance 73

PSYCHOLOGY MATTERS: Using Psychology to Learn Psychology 79

CRITICAL THINKING APPLIED: Left Brain versus Right Brain 80

Chapter Summary 81 Discovering Psychology Viewing Guide 84

CHAPTER 2 Biopsychology, Neuroscience, and Human Nature 40

CHAPTER 3 Sensation and Perception 86

PROBLEM: Is there any way to tell whether the world we “see” in our minds is the same as the external world—and whether we see things as most others do? 88

3.1 How Does Stimulation Become Sensation? 89 Transduction: Changing Stimulation to Sensation 90 Thresholds: The Boundaries of Sensation 91 Signal Detection Theory 93

PSYCHOLOGY MATTERS: Sensory Adaptation 93

3.2 How Are the Senses Alike? How Are They Different? 94 Vision: How the Nervous System Processes Light 94 Hearing: If a Tree Falls in the Forest . . . 100 How the Other Senses Are Like Vision and Hearing 104 Synesthesia: Sensations across the Senses 108

PSYCHOLOGY MATTERS: The Sense and Experience of Pain 109

3.3 What Is the Relationship between Sensation and Perception? 112 Perceptual Processing: Finding Meaning in Sensation 112 Perceptual Ambiguity and Distortion 114 Theoretical Explanations for Perception 117 Seeing and Believing 124

PSYCHOLOGY MATTERS: Using Psychology to Learn Psychology 125

CRITICAL THINKING APPLIED: Subliminal Perception and Subliminal Persuasion 126

Chapter Summary 128 Discovering Psychology Viewing Guide 130 vii

viii C O N T E N T S

CHAPTER 4 Learning and Human Nurture 132

PROBLEM: Assuming Sabra’s fear of flying was a response she had learned, could it also be treated by learning? If so, how? 134

4.1 What Sort of Learning Does Classical Conditioning Explain? 136 The Essentials of Classical Conditioning 137 Applications of Classical Conditioning 139

PSYCHOLOGY MATTERS: Taste Aversions and Chemotherapy 142

4.2 How Do We Learn New Behaviors By Operant Conditioning? 142 Skinner’s Radical Behaviorism 143 The Power of Reinforcement 143 The Problem of Punishment 149 A Checklist for Modifying Operant Behavior 152 Operant and Classical Conditioning Compared 153

PSYCHOLOGY MATTERS: Using Psychology to Learn Psychology 155

4.3 How Does Cognitive Psychology Explain Learning? 156 Insight Learning: Köhler in the Canaries with Chimps 157 Cognitive Maps: Tolman Finds Out What’s on a

Rat’s Mind 158 Observational Learning: Bandura’s Challenge to

Behaviorism 159 Brain Mechanisms and Learning 161 “Higher” Cognitive Learning 162

PSYCHOLOGY MATTERS: Fear of Flying Revisited 162

CRITICAL THINKING APPLIED: Do Different People Have Different “Learning Styles”? 164

Chapter Summary 166 Discovering Psychology Viewing Guide 168

CHAPTER 5 Memory 170

PROBLEM: How can our knowledge about memory help us evaluate claims of recovered memories? 172

5.1 What Is Memory? 172 Metaphors for Memory 173 Memory’s Three Basic Tasks 174

PSYCHOLOGY MATTERS: Would You Want a “Photographic” Memory? 175

5.2 How Do We Form Memories? 177 The First Stage: Sensory Memory 178 The Second Stage: Working Memory 180 The Third Stage: Long-Term Memory 184

PSYCHOLOGY MATTERS: “Flashbulb” Memories: Where Were You When . . . ? 189

5.3 How Do We Retrieve Memories? 190 Implicit and Explicit Memory 190 Retrieval Cues 191 Other Factors Affecting Retrieval 193

PSYCHOLOGY MATTERS: On the Tip of Your Tongue 194

5.4 Why Does Memory Sometimes Fail Us? 195 Transience: Fading Memories Cause Forgetting 196 Absent-Mindedness: Lapses of Attention Cause

Forgetting 198 Blocking: Access Problems 198 Misattribution: Memories in the Wrong Context 199 Suggestibility: External Cues Distort or Create Memories 200 Bias: Beliefs, Attitudes, and Opinions Distort Memories 201 Persistence: When We Can’t Forget 202 The Advantages of the “Seven Sins” of Memory 202 Improving Your Memory with Mnemonics 203

PSYCHOLOGY MATTERS: Using Psychology to Learn Psychology 204

CRITICAL THINKING APPLIED: The Recovered Memory Controversy 206

Chapter Summary 207 Discovering Psychology Viewing Guide 210

C O N T E N T S ix

CHAPTER 7 Development Over the Lifespan 264

PROBLEM: Do the amazing accounts of similarities in twins reared apart indicate we are primarily a product of our genes? Or do genetics and environment work together to influence growth and development over the lifespan? 266

7.1 What Innate Abilities Does the Infant Possess? 268 Prenatal Development 268 The Neonatal Period: Abilities of the Newborn Child 269 Infancy: Building on the Neonatal Blueprint 271

PSYCHOLOGY MATTERS: Not Just Fun and Games: The Role of Child’s Play in Life Success 277

7.2 What Are the Developmental Tasks of Childhood? 279 How Children Acquire Language 279 Cognitive Development: Piaget’s Theory 282 Social and Emotional Development 288

PSYCHOLOGY MATTERS: The Puzzle of ADHD 294

7.3 What Changes Mark the Transition of Adolescence? 296 Adolescence and Culture 296

Physical Maturation in Adolescence 297 Adolescent Sexuality 298 Neural and Cognitive Development in Adolescence 299 Moral Development: Kohlberg’s Theory 300 Social and Emotional Issues in Adolescence 302

PSYCHOLOGY MATTERS: Using Psychology to Learn Psychology: Cognitive Development in College Students 304

7.4 What Developmental Challenges Do Adults Face? 305 Early Adulthood: Explorations, Autonomy, and Intimacy 306 The Challenges of Midlife: Complexity and Generativity 308 Late Adulthood: The Age of Integrity 310

PSYCHOLOGY MATTERS: A Look Back at the Jim Twins and Your Own Development 313

CRITICAL THINKING APPLIED: The Mozart Effect 315

Chapter Summary 316 Discovering Psychology Viewing Guide 320

CHAPTER 6 Thinking and Intelligence 212

PROBLEM: What produces “genius,” and to what extent are the people we call “geniuses” different from others? 214

6.1 What Are the Components of Thought? 215 Concepts 215 Imagery and Cognitive Maps 217 Thought and the Brain 218 Intuition 219

PSYCHOLOGY MATTERS: Schemas and Scripts Help You Know What to Expect 221

6.2 What Abilities Do Good Thinkers Possess? 223 Problem Solving 223 Judging and Making Decisions 227 Becoming a Creative Genius 229

PSYCHOLOGY MATTERS: Using Psychology to Learn Psychology 232

6.3 How Is Intelligence Measured? 233 Binet and Simon Invent a School Abilities Test 234 American Psychologists Borrow Binet and Simon’s Idea 235 Problems with the IQ Formula 236 Calculating IQs “on the Curve” 237 IQ Testing Today 238

PSYCHOLOGY MATTERS: What Can You Do for an Exceptional Child? 239

6.4 Is Intelligence One or Many Abilities? 242 Psychometric Theories of Intelligence 242 Cognitive Theories of Intelligence 243 The Question of Animal Intelligence 247

PSYCHOLOGY MATTERS: Test Scores and the Self-Fulfilling Prophecy 249

6.5 How Do Psychologists Explain IQ Differences Among Groups? 250 Intelligence and the Politics of Immigration 251 What Evidence Shows That Intelligence Is Influenced

by Heredity? 251 What Evidence Shows That Intelligence is Influenced

by Environment? 252 Heritability (Not Heredity) and Group Differences 253 PSYCHOLOGY MATTERS: Stereotype Threat 256

CRITICAL THINKING APPLIED: The Question of Gender Differences 258

Chapter Summary 259 Discovering Psychology Viewing Guide 262

CHAPTER 8 States of Consciousness 322

PROBLEM: How can psychologists objectively examine the worlds of dreaming and other subjective mental states? 324

8.1 How Is Consciousness Related to Other Mental Processes? 324 Tools for Studying Consciousness 326 Models of the Conscious and Nonconscious Minds 327 What Does Consciousness Do for Us? 329 Coma and Related States 330

PSYCHOLOGY MATTERS: Using Psychology to Learn Psychology 331

8.2 What Cycles Occur in Everyday Consciousness? 332 Daydreaming 332

Sleep: The Mysterious Third of Our Lives 333 Dreaming: The Pageants of the Night 338

PSYCHOLOGY MATTERS: Sleep Disorders 341

8.3 What Other Forms Can Consciousness Take? 344 Hypnosis 345 Meditation 347 Psychoactive Drug States 348

PSYCHOLOGY MATTERS: Dependence and Addiction 354

CRITICAL THINKING APPLIED: The Unconscious—Reconsidered 356

Chapter Summary 358 Discovering Psychology Viewing Guide 360

x C O N T E N T S

CHAPTER 10 Personality: Theories of the Whole Person 412

PROBLEM: What influences were at work to produce the unique behavioral patterns, high achievement motivation, and consistency over time and place that we see in the personality of Mary Calkins? 414

10.1 What Forces Shape Our Personalities? 415 Biology, Human Nature, and Personality 416 The Effects of Nurture: Personality and the Environment 416 The Effects of Nature: Dispositions and Mental

Processes 417 Social and Cultural Contributions to Personality 417 PSYCHOLOGY MATTERS: Explaining Unusual People

and Unusual Behavior 418

10.2 What Persistent Patterns, or Dispositions, Make Up Our Personalities? 420

Personality and Temperament 421 Personality as a Composite of Traits 422 PSYCHOLOGY MATTERS: Finding Your Type 426

10.3 Do Mental Processes Help Shape Our Personalities? 428 Psychodynamic Theories: Emphasis on Motivation

and Mental Disorder 428

Humanistic Theories: Emphasis on Human Potential and Mental Health 439

Social-Cognitive Theories: Emphasis on Social Learning 442

Current Trends: The Person in a Social System 445 PSYCHOLOGY MATTERS: Using Psychology to Learn

Psychology 445

10.4 What “Theories” Do People Use to Understand Themselves and Others? 447

Implicit Personality Theories 447 Self-Narratives: The Stories of Our Lives 448 The Effects of Culture on Our Views of Personality 449 PSYCHOLOGY MATTERS: The Personality of Time 450

CRITICAL THINKING APPLIED: The Person–Situation Controversy 453

Chapter Summary 454 Discovering Psychology Viewing Guide 456

CHAPTER 9 Motivation and Emotion 362

PROBLEM: Motivation is largely an internal and subjective process: How can we determine what motivates people like Lance Armstrong to work so hard at becoming the best in the world at what they do? 364

9.1 What Motivates Us? 364 Why People Work: McClelland’s Theory 365 The Unexpected Effects of Rewards on Motivation 367 PSYCHOLOGY MATTERS: Using Psychology to Learn

Psychology 368

9.2 How Are Our Motivational Priorities Determined? 369 Instinct Theory 369 Drive Theory 370 Freud’s Psychodynamic Theory 371 Maslow’s Hierarchy of Needs 372 Putting It All Together: A New Hierarchy of Needs 373

PSYCHOLOGY MATTERS: Determining What Motivates Others 374

9.3 Where Do Hunger and Sex Fit into the Motivational Hierarchy? 375 Hunger: A Homeostatic Drive and a Psychological

Motive 376 The Problem of Will Power and Chocolate Cookies 379

Sexual Motivation: An Urge You Can Live Without 380 Sex, Hunger, and the Hierarchy of Needs 384

PSYCHOLOGY MATTERS: The What and Why of Sexual Orientation 385

9.4 How Do Our Emotions Motivate Us? 387 What Emotions Are Made Of 388 What Emotions Do for Us 389 Counting the Emotions 389 Cultural Universals in Emotional Expression 390

PSYCHOLOGY MATTERS: Gender Differences in Emotion Depend on Biology and Culture 391

9.5 What Processes Control Our Emotions? 392 The Neuroscience of Emotion 393 Arousal, Performance, and the Inverted U 396 Theories of Emotion: Resolving Some Old Issues 397 How Much Conscious Control Do We Have Over Our

Emotions? 399

PSYCHOLOGY MATTERS: Detecting Deception 403

CRITICAL THINKING APPLIED: Do Lie Detectors Really Detect Lies? 405

Chapter Summary 407 Discovering Psychology Viewing Guide 410

C O N T E N T S xi

CHAPTER 11 Social Psychology 458

PROBLEM: What makes ordinary people willing to harm other people, as they did in Milgram’s shocking experiment? 461

11.1 How Does the Social Situation Affect Our Behavior? 462 Social Standards of Behavior 463 Conformity 465 Obedience to Authority 471 Cross-Cultural Tests of Milgram’s Research 475 Some Real-World Extensions of the Milgram Obedience

to Authority Paradigm 477 The Bystander Problem: The Evil of Inaction 478 Need Help? Ask for It! 480

PSYCHOLOGY MATTERS: On Being “Shoe” at Yale U 482

11.2 Constructing Social Reality: What Influences Our Judgments of Others? 483 Interpersonal Attraction 484 Loving Relationships 488

Making Cognitive Attributions 490 Prejudice and Discrimination 492

PSYCHOLOGY MATTERS: Stereotype Lift and Values Affirmations 498

11.3 How Do Systems Create Situations That Influence Behavior? 500 The Stanford Prison Experiment 500 Chains of System Command 502 Preventing Bullying by Systematic Changes and Reframing 504

PSYCHOLOGY MATTERS: Using Psychology to Learn Psychology 507

CRITICAL THINKING APPLIED: Is Terrorism “a Senseless Act of Violence, Perpetrated by Crazy Fanatics”? 508

Chapter Summary 510 Discovering Psychology Viewing Guide 512

PROBLEM: Is it possible to distinguish mental disorder from merely unusual behavior? That is, are there specific signs that clearly indicate mental disorder? 516

12.1 What Is Psychological Disorder? 517 Changing Concepts of Psychological Disorder 518 Indicators of Abnormality 521 A Caution to Readers 522

PSYCHOLOGY MATTERS: The Plea of Insanity 522

12.2 How Are Psychological Disorders Classified in the DSM-IV ? 524 Overview of the DSM-IV Classification System 524 Mood Disorders 526 Anxiety Disorders 530 Somatoform Disorders 534 Dissociative Disorders 535 Schizophrenia 537

Developmental Disorders 541 Personality Disorders 542 Adjustment Disorders and Other Conditions: The Biggest

Category of All 544 Gender Differences in Mental Disorders 544

PSYCHOLOGY MATTERS: Shyness 544

12.3 What Are the Consequences of Labeling People? 545 Diagnostic Labels, Labeling, and Depersonalization 546 The Cultural Context of Psychological Disorder 546

PSYCHOLOGY MATTERS: Using Psychology to Learn Psychology 547

CRITICAL THINKING APPLIED: Insane Places Revisited—Another Look at the Rosenhan Study 548

Chapter Summary 550 Discovering Psychology Viewing Guide 552

CHAPTER 12 Psychological Disorders 514

xii C O N T E N T S

Glossary G-1 References R-1 Answers to Discovering Psychology Program Review Questions A-1 Photo Credits C-1 Name Index I-1 Subject Index I-7

CHAPTER 14 From Stress to Health and Well-Being 596

PROBLEM: Were the reactions and experiences of the 9/11 firefighters and others at the World Trade Center attacks typical of people in other stressful situations? And what factors explain individual differences in our physical and psychological responses to stress? 598

14.1 What Causes Distress? 600 Traumatic Stressors 601 Chronic Stressors 606

PSYCHOLOGY MATTERS: Student Stress 611

14.2 How Does Stress Affect Us Physically? 613 Physiological Responses to Stress 614 Stress and the Immune System 617

PSYCHOLOGY MATTERS: Cognitive Appraisal of Ambiguous Threats 619

14.3 Who Is Most Vulnerable to Stress? 620 Type A Personality and Hostility 622 Locus of Control 623 Hardiness 624

Optimism 625 Resilience 626

PSYCHOLOGY MATTERS: Using Psychology to Learn Psychology 628

14.4 How Can We Transform Negative Stress Into Positive Life Strategies? 629 Psychological Coping Strategies 630 Positive Lifestyle Choices: A “Two-for-One” Benefit to Your

Health 634 Putting It All Together: Developing Happiness and Subjective

Well-Being 637

PSYCHOLOGY MATTERS: Behavioral Medicine and Health Psychology 639

CRITICAL THINKING APPLIED: Is Change Really Hazardous to Your Health? 641

Chapter Summary 643 Discovering Psychology Viewing Guide 646

CHAPTER 13 Therapies for Psychological Disorders 554

PROBLEM: What is the best treatment for Derek’s depression: psychological therapy, drug therapy, or both? More broadly, the problem is this: How do we decide among the available therapies for any of the mental disorders? 556

13.1 What Is Therapy? 556 Entering Therapy 557 The Therapeutic Alliance and the Goals of Therapy 557 Therapy in Historical and Cultural Context 559

PSYCHOLOGY MATTERS: Paraprofessionals Do Therapy, Too 560

13.2 How Do Psychologists Treat Psychological Disorders? 561 Insight Therapies 562 Behavior Therapies 568 Cognitive–Behavioral Therapy: A Synthesis 571 Evaluating the Psychological Therapies 574

PSYCHOLOGY MATTERS: Where Do Most People Get Help? 576

13.3 How Is the Biomedical Approach Used to Treat Psychological Disorders? 577 Drug Therapy 577

Other Medical Therapies for Psychological Disorders 581 Hospitalization and the Alternatives 583

PSYCHOLOGY MATTERS: What Sort of Therapy Would You Recommend? 584

13.4 How Do the Psychological Therapies and Biomedical Therapies Compare? 585 Depression and Anxiety Disorders: Psychological versus

Medical Treatment 587 Schizophrenia: Psychological versus Medical

Treatment 587 “The Worried Well” and Other Problems: Not Everyone Needs

Drugs 588

PSYCHOLOGY MATTERS: Using Psychology to Learn Psychology 588

CRITICAL THINKING APPLIED: Evidence-Based Practice 589

Chapter Summary 592 Discovering Psychology Viewing Guide 594

P R E FA C E xiii

T O T H E S T U D E N T . . .

There is one simple formula for academic success, and the following demonstration will show you what it is. Study this array of letters for a few seconds: I B M U F O F B I C I A

Now, without peeking, write down as many of the letters as you can (in the correct order).

Most people remember about five to seven letters correctly. A few people get them all. How do these exceptional few do it? They find a pattern. (You may have noticed some familiar initials in the array above: IBM, UFO, FBI, CIA.) Finding the pattern greatly eases the task because you can draw on material that is already stored in mem- ory. In this case, all that needs to be remembered are four “chunks” of information instead of 12 unrelated letters.

The same principle applies to material you study for your psychology class. If you try to remember each piece of information as a separate item, you will have a difficult time. But if instead you look for patterns, you will find your task greatly simplified— and much more enjoyable.

USING PSYCHOLOGY TO LEARN PSYCHOLOGY So, how can you identify the patterns? Your friendly authors have developed several learning features that will make meaningful patterns in the text stand out clearly:

Core Concepts We have organized each major section of every chapter around a single big idea called a Core Concept. For example, one of the four Core Concepts in Chapter 5, Memory, says:

Core Concept 5.4 Human memory is an information-processing system that works constructively to encode, store, and retrieve information.

The Core Concept, then, becomes the central theme around which about 10 pages of material—including several new terms—are organized. As you read each chapter, keep- ing the Core Concept in mind will help you encode the new terms and ideas related to that concept, store them in your memory, and later retrieve them when you are being tested. To borrow an old saying, the Core Concepts become the “forest,” while the details of the chapter become the “trees.”

Key Questions Each Core Concept is introduced by a Key Question that also serves as a main heading in the chapter. Here, for example, is a Key Question from the Memory chapter:

5.4 KEY QUESTION Why Does Memory Sometimes Fail Us?