Anthony Puliafico (Author) Anthony C. Puliafico, PhD, is a clinical psychologist and director of the Columbia University Clinic for Anxiety and Related Disorders-Westchester. He is a renowned expert in the assessment and treatment of anxiety disorders and obsessive-compulsive disorder in children, adolescents and young adults.Joanna Robin (Author) Joanna A. Robin, PhD, is a clinical psychologist and director of Westchester Anxiety Treatment Psychological Services, PC. She specializes in cognitive-behavioral therapy (CBT) and has expertise in the treatment of anxiety, obsessive-compulsive disorder (OCD), and behavioral problems.