Hoofdstuk 1: Psychology is a way of thinking, Hoofdstuk 2: Sources of information: why research is best and how to find it, Hoofdstuk 3: Three claims, four validities...
Chapter 6: Surveys and Observations, Chapter 9: Multivariate Correlational Research, Chapter 7: Sampling - Estimating the Frequency of Behaviors and Beliefs...
Clinical Psychology and Other Mental Health Professions, Research and Science in Clinical Psychology, Underlying Structures of the Classification and Diagnosis of Mental Disorders...