Abnormal Psychology is a field of science and mental health that studies mental disorders such as anxiety, bipolar disorder, depression and psychosis, in order to understand and treat them. To hire a qualified freelance Abnormal Psychology professional, you should begin by taking the time to understand their specific skills and experience. Before making a hiring decision, you should ask for references and experience working with similar clients or projects to get a good idea of how the professional will work for you. Check their credentials to ensure they are licensed, qualified and experienced in the particular disorder(s) you are looking for help with. Depending on the specific project, the average hourly rate for freelance Abnormal Psychology professionals can range from $50 - $120 per hour.