Ralf Schwarzer

TABLE OF CONTENTS Preface... ......... ....................................................................................................... 1 1. General Introduction to Meta-Analysis ......................................................... 3 1.1 Reviewing and integrating the research literature ............................................ 3 1.2 Vote-counting: An inadequate attempt at quantification ................................. 5 1.3 Combined significance tests ............................................................................... 6 1.4 Combination of effect sizes from experimental studies ..................................... 8 1.5 Combination of effect sizes from correlational studies ...................................... 11 1.6 Brief guidelines for meta-analysis ..................................................................... 15 1.6.1 Finding and selecting studies .................................................................... 15 1.6.2 Identifying and coding study characteristics.......................................... 16 1.6.3 Reporting meta-analytic findings ............................................................. 17 1.7 Criticism of meta-analysis ................................................................................. 18