Providing treatment that really works is an important goal in the Thriving Child Center. We make sure that our clinicians not only have excellent clinical and personal qualities but also are trained and certified in treatments most likely to help our clients improve. Our providers are licensed psychologists with Ph.D.’s, meaning that they completed over 6 years of intensive training after college and earned a doctoral degree. Every provider is a doctor and specializes in the treatment that she provides.




Leah Clionsky, Ph.D.
Owner and Director
Licensed Psychologist

Certified Level II PCIT Trainer, PCIT International


main phone: 832-974-1176
direct phone: 832-974-1177




Dr. Clionsky is a licensed psychologist who specializes in providing treatments that really work to children, adolescents, adults and their families. Dr. Clionsky is passionate in her belief that people should get the most helpful treatment for their problems and should have access to doctors with the training and expertise to provide it. Dr. Clionsky has made it a priority to be trained and certified in many treatments that research indicates are most helpful for clients right now. Most notably, Dr. Clionsky was trained by the developer of Parent-Child Interaction Therapy, Dr. Sheila Eyberg, and has helped over 40 families with PCIT. She is a certified PCIT trainer and enjoys providing a treatment that works so quickly. She is also a certified TF-CBT therapist.

Dr. Clionsky earned her M.S. and Ph.D. at University of Florida. She completed her pre-doctoral internship and post-doctoral fellowship at Baylor College of Medicine (BCM). She became an Assistant Professor in the Department of Psychiatry and Behavioral Sciences at BCM, where she provided  psychotherapy to medical students, allied health students, graduate students. medical residents and clinical fellows through the Student and House Staff Mental Health Service. Previously, she was the Program Director for the Adolescents In Motion Program, an intensive outpatient program for adolescents with severe mental illness at Ben Taub General Hospital. Dr. Clionsky is excited to be in full-time private practice a Thriving Child Center and still provides training at BCM as a Clinical Assistant Professor. 


Ginn, N. C., Clionsky, L. N., Eyberg, S. M., Warner-Metzger, C., & Abner, J. P. (2015). Child-Directed Interaction Training for Young Children With Autism Spectrum Disorders: Parent and Child OutcomesJournal of Clinical Child and Adolescent Psychology10.1080/15374416.2015.1015135

N'zi, A., Luchash, R, Clionsky, L. N.  Eyberg, S.M. (2016). Enhancing Parent–Child Interaction Therapy With Motivational Interviewing Techniques. Cognitive and Behavioral Practice. doi:10.1016/j.cbpra.2016.03.002

Clionsky, L.N., Matorin, A., David, E.H., Coverdale, J.H., Shah, A.A. "Medical Capacity and Competency in a Geriatric Population: Self-Care and Placement."Psychiatr Ann. 2016 February 12;46(2):127-131.


Nizete-Ly Valles, Ph.D.
Licensed Psychologist

Psicologa Licenciada

main phone: 832-974-1176
direct phone: 832-974-1178



Dr. Valles is committed to providing evidence-based treatments to children and adolescents. Her primary therapeutic focus is to help children and adolescents identify their strengths and help them choose behaviors that are more consistent with valued living. She has a particular interest in working with children who have experienced traumatic events, are having difficulties with their mood, anxiety disorders, and obsessive-compulsive disorder. Dr. Valles also conducts numerous types of psychological evaluations, including testing for: autism spectrum disorders, intellectual disabilities, ADHD, and diagnostic clarification evaluations. Dr. Valles is able to provide these evaluations and psychotherapy in both English and Spanish. Dr. Valles has published peer reviewed articles and book chapters on aggressive behaviors in children, adolescent suicide, the effects of child abuse and neglect on children, and adult ADHD.

Dr. Valles received her clinical psychology doctorate from the University of Iowa and completed a child and adolescent psychology focused internship which specialized in providing trauma informed care. She completed her post-doctoral fellowship at Baylor College of Medicine’s Menninger Department of Psychiatry and Behavioral Sciences. Currently, Dr. Valles is the Program Director of the Autism Clinic for the Harris Health System and is an Assistant Professor for Baylor College of Medicine.


F. Linck, John & Ostermeyer, Britta & Valles, Nizete-Ly & Flores, Araceli & Shah, Asim. (2017). "The Role of Psychologists in Adult Attention-Deficit/Hyperactivity Disorder Testing". Psychiatric Annals. 47. 296-302. 10.3928/00485713-20170511-01. 

Zarling, A. L., Taber-Thomas, S., Murray, A., Knuston, J. F., Lawrence, E., Valles, N.-L., . . . Bank, L. (2013). Internalizing and externalizing symptoms in young children exposed to intimate partner violence: Examining intervening processes. Journal of Family Psychology, 27(6), 945-955.

Knutson JF, Taber SM, Murray AJValles NL, Koeppl G. (2010), The role of care neglect and supervisory neglect in childhood obesity in a disadvantaged sample. Journal of Pediatric Psychology. 35: 523-32. PMID 19996153 DOI: 10.1093/jpepsy/jsp115

Valles, N.-L. and Knutson, J. F. (2008), Contingent responses of mothers and peers to indirect and direct aggression in preschool and school-aged children. Aggr. Behav., 34: 497–510. doi:10.1002/ab.20268