This book covers the theory and practice of doing scientific research in psychology. It is balanced along conceptual and procedural lines. Every chapter shows psychologists at work in well-explained research examples, and each chapter contains practical advice on how to operationalise ideas presented. More than any other book this one gives students something practical to do to help them experience the principles at work. The book is organized around the general problems of validity and how to control for the various threats to validity. This is true for the later chapters on true experiments, quasi-experiments, single-subject designs, as well as the non-experimental research methods. This book should be of interest to students studying experimental psychology, research methods in psychology and behavioral research methods.
