Acknowledgements 2

Executive summary 6

1. Conceptualizing institutional trust and the use of trust measures for public policy 9

  1.1. The concepts of trust and trust drivers 9

  1.2. The rationale of measuring trust and its drivers through population surveys and their

  practical use in selected countries 15

  References 20

  Notes 23

2. Measuring institutional trust levels and drivers 24

  2.1. Surveys measuring trust in public institutions 24

  2.2. Questionnaire design for measuring trust in public institutions 27

  2.3. Data collection for measuring trust in public institutions 40

  References 53

  Notes 59

3. Evaluating the reliability and validity of trust statistics 61

  3.1. Validity of trust indicators: Measuring the right concept 62

  3.2. Coherence and reliability of trust measures: Consistency in measurement 73

  3.3. Recommendations: Checking the validity, coherence and reliability of trust survey

  measures 82

  References 84

  Notes 84

4. Interpreting and Publishing Trust and Trust Drivers Data 85

  4.1. Caveats in interpreting trust data 85

  4.2. Reporting and analysing trust data 88

  4.3. Publishing trust statistics and sharing trust data for scientific use 94

  References 97

  Note 97

Annex A. The OECD Trust Survey Core Questionnaire 98