Jay C. Thomas, Ph.D., ABPP, is a Distinguished University Professor, Assistant Dean, and Director of the Counseling Program at the School of Professional Psychology at Pacific University. His research interests include applied research methodology, outcome studies, behavioral change, program development and evaluation, personnel selection, job stress, mental health and the workplace, and psychometrics.

Michel Hersen, Ph.D., ABPP, is a professor and Dean at the School of Professional Psychology, Pacific University. His research interests include assessment and treatment of older adults, single care research, and administration.

Understanding Research in Clinical and Counseling Psychology, Second Edition is designed and written for graduate students aspiring to careers in practice and presents research as an indispensable tool for practice.

Part I: Research Foundations. Thomas, Rosqvist, Introduction: Science in the Service of Practice. Thomas, Christiansen, Measurement Theory in Research. Minke, Haynes, Sampling: The Generalizability of Data Across Persons, Behaviors, Settings, and Time. Scotti, Morris, Stacom, Cohen, Validity: Controlling and Balancing Interrelated Threats. Part II: Research Strategies. Freeman, Eagle, Single Subject Research Designs. Moyer, Gross, Group Designs. Goldstein, Correlational Methods. Durand, Wang, Clinical Trials. Thomas, Michael, Meta-analysis. Part III: Research Practice. Miller, Williams, Ethical Guidelines in Research. Gilman, Thomas, Winder, Literature Reviews. Thomas, Meeke, French, Planning Data Collection and Performing Analyses. Part IV: Special Problems. Rosqvist, Thomas, Truax, Effectiveness versus Efficacy Studies. Sue, Cheng, Sue, Problems in Generalizing Research to Other Cultures. Clement, Research in Private Practice: How to Determine Your Effectiveness as a Therapist. Sexton, Research with Families. Rapport, Bolden, Chung, Issues in Doing Research with Children. Feliciano, Yochim, Steers, Jay, Segal, Research with Older Adults.