Dr. Harness is a licensed clinical psychologist with a doctoral degree from Jackson State University in Jackson, Mississippi. She received her undergraduate degree from Louisiana State University in Baton Rouge, Louisiana. Dr. Harness completed her pre-doctoral internship at Oklahoma Health Consortium in Norman, Oklahoma, in positions at the University of Oklahoma University Counseling Center, University of Oklahoma Health Sciences Center (OUHSC) Student Counseling Services, and (OUHSC) Behavioral Health Services. She then completed her post-doctoral fellowship in Clinical Psychology at Family Focus in Baton Rouge, Louisiana. She is credentialed through the National Register of Health Service Psychologists.

Dr. Harness specializes in assessment and treatment services for children, adolescents, and adults. She offers assessment services, including psychological and psychoeducational evaluations. Treatment services include cognitive-behavioral therapy, social skills training, individual therapy, couples therapy, group therapy and relaxation training.