1 What is research? 1
2 Variables 7
3 Data organization 20
4 Controlling extraneous variables 29
5 Critiquing statistical studies 43
6 The group and the individuals 63
7 Patterns in human behavior 75
8 Statistics for testing 95
9 Statistical logic 108
10 Correlation 126
11 Comparing means 154
12 Comparing frequencies 182
13 Hands-on critique and posttest 199
References 209
Index 211