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How do we come to be who we are? Why do we differ in our personalities? How do these differences matter in life? Individual Differences and Personality aims to describe how and w… Read more
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How do we come to be who we are? Why do we differ in our personalities? How do these differences matter in life? Individual Differences and Personality aims to describe how and why personality varies among people. Unlike books that focus on individual theorists, this book focuses on current research and theory on the nature of personality and related individual differences. The book begins by discussing how personality is measured, the concept of a personality trait, and the basic dimensions of personality. This leads to a discussion of the origins of personality, with descriptions of its developmental course, its biological causes, its genetic and environmental influences, and its evolutionary function. The concept of a personality disorder is then described, followed by a discussion of the influence of personality on life outcomes in relationships, work, and health. Finally, the book examines the important differences between individuals in the realms of mental abilities, of beliefs and attitudes, and of behavior.
Acknowledgments
Preface
Introduction
The Study of Personality
The Universal, the Unique, and the In-Between
Idiographic Versus Nomothetic Approaches
Outline of this Book
Chapter 1. Basic Concepts in Psychological Measurement
1.1 Some Simple Statistical Ideas
1.2 Assessing Quality of Measurement: Reliability and Validity
1.3 Methods of Measurement: Self- and Observer Reports, Direct Observations, Biodata
1.4 Summary and Conclusions
Chapter 2. Personality Traits and the Inventories that Measure Them
2.1 The Idea of a Personality Trait
2.2 Personality Traits and Other Psychological Characteristics
2.3 Do Personality Traits Exist?
2.4 Measuring Traits by Self- or Observer Report: Structured Personality Inventories
2.5 Strategies of Personality Inventory Construction
2.6 Self- and Observer Reports on Personality Inventory Scales
2.7 Summary and Conclusions
Chapter 3. Personality Structure: Classifying Traits
3.1 Which Traits to Measure? Completeness without Redundancy
3.2 A Gentle Introduction to Factor Analysis
3.3 Factor Analysis of Personality Traits: How to Find a Representative Set of Traits?
3.4 Lexical Studies in the English Language: The Big Five Personality Factors
3.5 Lexical Studies in Many Languages: The HEXACO Personality Factors
3.6 What it all Means: A Few Dimensions, but Many Personalities
3.7 Summary and Conclusions
Chapter 4. Developmental Change and Stability of Personality
4.1 Defining Change and Stability
4.2 Developmental Changes in Mean Levels of Personality Traits
4.3 Stability of Traits Across the Years (and the Life Span)
4.4 Personality in Childhood and Infancy: Measurement and Structure
4.5 Summary and Conclusions
Chapter 5. Biological Bases of Personality
5.1 Early Ideas: The Four “Humors” and Personality
5.2 Neurotransmitters
5.3 Brain Structures
5.4 Hormones
5.5 Summary and Conclusions
Chapter 6. Genetic and Environmental Influences on Personality
6.1 The Question: Nature versus Nurture
6.2 Examining the Similarity of Relatives
6.3 Separating Heredity and Environment
6.4 The Answers
6.5 Assumptions Underlying Heritability Studies in General
6.6 Assumptions Underlying Twin-Based Heritability Studies in Particular
6.7 Effects of the Unique Environment on Personality? Parental Treatment, Peer Groups, and Birth Order
6.8 Summary and Conclusions
6.9 Appendix: Difficulties in Separating the Effects of Heredity and Environment
Chapter 7. The Evolutionary Function of Personality
7.1 The Idea of Evolution by Natural Selection
7.2 Why Are We Not All the Same? Fluctuating Optimum and Frequency Dependence
7.3 Adaptive Trade-offs between High and Low Levels of the HEXACO Personality Factors
7.4 The Operation of the Fluctuating Optimum and Frequency Dependence: Some Examples
7.5 Summary and Conclusions
Chapter 8. Personality Disorders
8.1 The Idea of a Personality Disorder
8.2 The DSM-5 Personality Disorders
8.3 An Alternative System for Personality Disorders
8.4 Origins of Personality Disorders: Developmental Change and Stability, Biological Bases, Heredity and Environment, and Evolution
8.5 Treatment of Personality Disorders
8.6 Summary and Conclusions
Chapter 9. Personality and Life Outcomes
9.1 Does Personality Predict Features of One’s Life Story?
9.2 Relationships and Marriage
9.3 Friendships and Other Peer Relationships
9.4 Health-Related Outcomes
9.5 Academic Performance
9.6 Job Performance
9.7 Law-Abidingness versus Criminality
9.8 Life Satisfaction
9.9 Summary and Conclusions
Chapter 10. Mental Ability
10.1 The Domain of Mental Ability
10.2 The Structure of Mental Ability: One Dimension or Many?
10.3 Developmental Change and Stability in Mental Abilities
10.4 Biological Bases of Mental Ability
10.5 Genetic and Environmental Influences on Mental Ability
10.6 Evolutionary Function of Mental Ability
10.7 Mental Ability and Life Outcomes
10.8 Not All g-Loaded Tasks are the Same
10.9 Alternative Ideas About Mental Abilities
10.10 Summary and Conclusions
Chapter 11. Vocational Interests
11.1 How Vocational Interests are Measured
11.2 Score Reports from Vocational Interest Surveys
11.3 Constructing Vocational Interest Scales: Empirical and Rational Strategies
11.4 Major Dimensions of Vocational Interests
11.5 Vocational Interests and Personality
11.6 Vocational Interests and Mental Abilities
11.7 Validity of Vocational Interest Surveys
11.8 Origins of Vocational Interests: Developmental Change and Stability, Genetic and Environmental Influences, Biological Bases, and Evolution
11.9 Summary and Conclusions
Chapter 12. Religion and Politics
12.1 Religion
12.2 Politics
12.3 Origins of Religious Beliefs and Political Attitudes: Biological Bases, Genetic and Environmental Influences, and Evolutionary Function
12.4 Summary and Conclusions
Chapter 13. Sexuality
13.1 Major Dimensions of Sexuality
13.2 Sexuality and Personality
13.3 Origins of Variation in Sexuality: Developmental Stability and Change, Genetic and Environmental Influences, Biological Bases, and Evolution
13.4 Sexual Arousal
13.5 Sexual Commitment (or Restricted versus Unrestricted Sociosexuality)
13.6 Sexual Orientation
13.7 Summary and Conclusions
Conclusions
What We Have Learned So Far
What We Have Yet to Learn
Final Remarks
References
Index
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