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Are you seeking information about Dr. Lack's private practice or information about Dr. Lack's training of clinical providers?

Resources for potential clients

Resources for clinical providers


Below is information about both what you need to know and do if you are interested in seeing Dr. Lack privately as a client, as well as general guidance towards choosing the best therapist for yourself.

Clinical Interests & Training

Dr. Lack is a clinical psychologist currently licensed to practice in the state of Oklahoma (HSP #1143) and previously in Arkansas (#07-37P). He received his training in the APA-approved clinical psychology doctoral program at Oklahoma State University and completed his predoctoral internship at the University of Florida. 

Dr. Lack's primary clinical interest is in the application of evidence-based cognitive and behavioral methods to the treatment of severe anxiety and obsessive-compulsive and related disorders across the life span, such as social anxiety disorder, obsessive-compulsive disorder, phobias, Tourette's Disorder or chronic tics, and trichotillomania. Methods used include exposure with response prevention, cognitive restructuring, behavioral activation, habit reversal training, and other well-studied and effective methods.

In addition, Dr. Lack is also interested in the assessment of psychological, learning, and developmental difficulties in children and adults. He has consulted for a number of state, national, and legal agencies regarding psychological issues, including dementia level and impairment status, disability status, and providing expert witness. 

Dr. Lack sees a small number of private clients, primarily those with OCD or Tourette's Disorder. Due to this, he cannot bill insurance for his clients, but is able to provide forms for you to turn into your insurance company. Dr. Lack charges a flat per-hour fee that is due upon receipt of service. He performs both office-based and home-based therapy, but does charge a mileage fee for seeing people outside of Edmond. He also supervises graduate students performing therapy in the UCO Psychology Clinic, if you are unable to afford his services directly. If you would like to contact Dr. Lack about being seen for therapy or for a consultation, please click the "Contact" link at the top of this page.

What is evidence-based practice?

Dr. Lack uses scientifically proven treatment and assessment methods, based on 60 years of evidence from basic and applied research, which shows that these methods work. Having been extensively trained in both the science and practice of psychology, Dr. Lack is familiar with the most reliable methods to treat a wide range of mental, behavioral, emotional, and physical problems. Via his teaching and supplementary training, he strives to keep up to date on the latest developments in the field so that clients are provided with the most effective services possible.

To learn more about evidence-based practice and Cognitive-Behavioral Therapy, the specific type of therapy used by Dr. Lack, please visit the following websites: - What is Cognitive-Behavioral Therapy? - How to Choose a Behavior Therapist - Cognitive-Behavior Therapy - Evidence-based Practice in Psychology - Defining Evidence-based Behavioral Practice

How should I choose a therapist?

The best advice that Dr. Lack can give anyone when choosing a mental health professional is to see someone who practices evidence-based psychology (see this link for an overivew of such treatments). Stated simply, evidence-based psychology (EBP) is a guiding principle that means a therapist, whether that person is a psychologist, counselor, social worker, or psychiatrist, is guided in the treatment and assessment methods they use by the current best practices as defined by scientific evidence. Unfortunately, many therapists have not been trained in these methods, and instead rely on intuition, what they think has worked well, or what they were trained in - regardless of the evidence or lack thereof for its effectiveness. Asking a potential therapist what their primary therapeutic orientation is, and how they know the type of therapy they do works, are a great way to find out if a therapist uses EBP.

The second piece of advice is that you need to be sure that your therapist does not attempt to push their own personal values system onto you. While this is both an unethical and inappropriate thing to do, from his own experience with clients Dr. Lack can tell you that a large number of them report this happening. While this does not mean that you need to find a therapist with your exact religious, political, ethnic, and cultural background, it does mean that your therapist needs to respect what your beliefs and values are and recognize that their job as a therapist is not to convert you. If you find yourself in a situation where this is occurring, he would recommend giving the therapist a warning that you are becoming offended by their actions. If they continued to push their own agenda at the expense of your mental health, a report to the state licensing board would be appropriate.


As a psychologist, a scientist, and a professor, Dr. Lack has a deep concern that mental health practitioners use the current best evidence to guide the services they provide their clients. To that end, he has compiled (and will continue adding to) the below links. Included below are treatment manuals, workbooks, self-guided treatment options, and more. If you are aware of something that should be on this list, please contact him and he will include it if appropriate.

Psychopathology Resources

Treatment Guidelines

Learning Cognitive-Behavioral Therapy

  • Dr. Lack's "Learning CBT" - a collection of lecture materials, slides, and more that Dr. Lack has developed for his courses and workshops.
  • Teach CBT - the Association for Behavioral & Cognitive Therapies has gathered numerous tools, including videos, syllabi, and lectures, to help people learn about CBT
  • CBT Training Lectures - a collection of worksheets, training, and articles on CBT
  • CBT Competencies - an overiew of the general and specific competencies needed by well-trained CBT clinicians; useful for conducting a self-study to determine which areas you need more training in
  • Child & Adolescent CBT Workshops - a collection of video trainings for doing evidence-based work with youth who are depressed, anxious, self-harming, and more. Also includes references for treatment manuals for each problem

Cognitive-Behavioral Therapy Manuals & Tools

Cognitive-Behavioral Therapy Self-Help

  • CBT Self-help Books - these have all received ABCT's "Seal of Merit," as they are based on empirically supported treatments
  • e-couch - an online CBT-based treatment for depression, generalized anxiety, and social anxiety
  • Mood Gym - an online CBT-based depression treatment

Recommended Therapist Locators

Association for Behavioral & Cognitive Therapy's "Find a Therapist"

Academy of Cognitive Therapy's Certified Therapists

International OCD Foundation's Treatment Providers

  • Although the focus is on OCD, the majority of the therapists in this database will be highly competent at treating other anxiety and related problems.

Secular Therapy Project

  • Dr. Lack is the past Director of the STP as well as a member. Although it was designed to help connect non-religious clients with secular therapists, all of the clinicians in the database are carefully vetted to ensure that they are using evidence-based methods and, as such, are a great resource.