A perennial best-seller since 1997, this text provides a detailed overview of all the important concepts traditionally covered in a research methods class. The numerous examples and large number of exercises help students master the material. Divided into short sections, this text makes it easy for you to give customized assignments. New to this edition: The material on preparing research reports has been expanded. Also new: Numerous changes have been made throughout the text for consistency with the new edition of the APA style manual, and new examples from published reports have been added to keep this text up-to-date.