Mood Disorders: An Introduction

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About the author

Caleb Lack

Caleb W. Lack, Ph.D. is an Assistant Professor of Psychology and Counseling Practicum Coordinator in the Department of Psychology at the University of Central Oklahoma.


A clinical psychologist licensed to practice in both Oklahoma and Arkansas, Dr. Lack is the author of more than three dozen scientific publications relating to the assessment and treatment of psychological problems such as Obsessive-Compulsive Disorder, Tourette’s Syndrome, pediatric mood disorders, and posttraumatic stress. In addition, Dr. Lack has presented nationwide and internationally at conferences on a variety of topics, including children’s reactions to natural disasters, computer-based treatment of substance abuse, innovative teaching and training methods, and more. He is on the editorial board of several scientific journals and a reviewer for both journals and granting agencies.


Dr. Lack’s clinical interest in evidence-based practice developed while in graduate school for Clinical Psychology at Oklahoma State University and during his predoctoral internship in Clinical Child/Pediatric Psychology at the University of Florida. He specializes in the treatment of children and adults with anxiety disorders (particularly obsessive-compulsive disorder), psychological assessment, and has extensive experience with persons with chronic tics and Tourette’s Syndrome. He has consulted for and been interviewed by local, national, and international media outlets.


In addition to courses on his clinical and research specialties in the anxiety disorders and evidence-based psychological practice, Dr. Lack also teaches undergraduate and graduate courses on critical thinking, science, and pseudoscience. These recently culminated in the edited text Science, Pseudoscience, & Critical Thinking as well as a series of documentaries on pseudoscience and superstition in Oklahoma. He writes the "Great Plains Skeptic" column on the Skeptic Ink Network, as well as presenting about skepticism and critical thinking frequently.

A native Oklahoman, Dr. Lack grew up in the rural community of Mountain View, where his parents still reside and farm and ranch on land that has been owned by the family for close to 100 years. He currently resides in Edmond, Oklahoma with his beautiful wife and brilliant son on a wonderful little property called Freethought Farm.