| Preface | 7 |
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| Acknowledgments | 8 |
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| Contents | 9 |
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| 1 The Significance of the Social Group | 14 |
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| Introduction | 14 |
| The Concept of Group | 14 |
| Common Characteristics of Social Groups | 15 |
| Interdependence of Members | 15 |
| External Relationships | 16 |
| Cohesion | 16 |
| Identification with the Group and Membership Motives | 17 |
| Leadership Behavior | 18 |
| Group Culture | 18 |
| Types of Groups | 18 |
| The Individual Versus the Group as the Unit of Analysis | 19 |
| Groups, Relationships, Health, and Well-Being | 22 |
| Effects of Social Ties on Health | 23 |
| The Effects of Social Ostracism on Health | 25 |
| The Effects of Social Isolation on Health | 25 |
| The Effects of Loneliness on Health | 27 |
| Effects of Group Culture on Health and Well-Being | 28 |
| Old Order Amish | 28 |
| Mormons | 29 |
| Seventh-Day Adventists | 30 |
| Israeli Kibbutzim | 31 |
| Clergy and Religious Orders | 32 |
| Okinawans | 33 |
| Tarahumara Indians | 34 |
| Costa Rica's Nicoyans | 35 |
| Summary | 36 |
| Notes | 37 |
| 2 The Concept of Social Cohesion | 43 |
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| Introduction | 43 |
| Historical Overview of Conceptions of Social Cohesion | 43 |
| Empirical Studies (Late 19th and Early 20th Centuries) | 47 |
| Experimental Studies (Early- to Mid-20th Century) | 47 |
| Social Network Analysis (Late 20th and Early 21st Centuries) | 53 |
| Measuring Social Cohesion in Small Groups | 54 |
| Measuring Social Cohesion in Large Groups | 56 |
| Feelings of Social Cohesiveness | 57 |
| Perceptions of Social Cohesiveness | 58 |
| Social Network Analysis | 58 |
| Summary | 59 |
| Notes | 59 |
| 3 Social Cohesion and Related Concepts: Social Supportand Social Capital | 61 |
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| Introduction | 61 |
| Social Support | 62 |
| Concept | 62 |
| Evidence of Effects | 63 |
| Dimensions of Social Support | 64 |
| Measurement | 65 |
| Social Capital | 66 |
| Concept | 67 |
| Evidence of Effects | 68 |
| Dimensions of Social Capital | 69 |
| Measurement | 70 |
| Functional Measures | 70 |
| Structural Measures | 71 |
| Positional Measures | 71 |
| Community Social Capital | 71 |
| Sorting Out Conceptual Relationships | 73 |
| Different Concepts, Purposes, and Uses | 75 |
| Summary | 75 |
| Notes | 77 |
| 4 Cohesive Societies | 80 |
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| Introduction | 80 |
| Social Indicators and Social Cohesion | 80 |
| Civic Health Index | 81 |
| Index of Social Health | 82 |
| OECD Social Indicators | 83 |
| Voting | 84 |
| Crime | 84 |
| Suicide | 85 |
| Work Accidents | 85 |
| Strikes | 85 |
| Trust in Political Institutions | 86 |
| Life Satisfaction | 86 |
| Societal Integration and Health | 86 |
| Cultural Differences in Social Integration | 87 |
| Health Information as a Proxy for Measuring Societal Cohesiveness | 87 |
| Summary | 88 |
| Notes | 88 |
| 5 Cohesive Communities | 90 |
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| Introduction | 90 |
| How Communities Become Cohesive | 91 |
| Maintaining and Strengthening Community Cohesiveness | 99 |
| Creating Cohesion Across Ethnically Diverse Communities | 101 |
| Virtual Communities and Social Cohesiveness | 102 |