Clinical psychologists integrate the science of psychology into the assessment, diagnosis, and treatment of complex human problems and mental health disorders. 

Clinical psychologists work with clients to assess and address the spectrum of mental, emotional, behavioural, and situational factors involved in issues such as anxiety, depression, ADHD, body-focused repetitive behaviours (BFRBs), body dysmorphia, eating disorders, hoarding, obsessive-compulsive disorder (OCD), schizophrenia or psychosis, and post-traumatic stress disorder (PTSD).

Clinical psychologists might also train future psychologists, teach in an academic setting, or perform research to develop new treatment methods.

Although both counselling and clinical psychologists practice treatment or therapy, counselling psychologists tend to focus on a client’s general well-being, whereas clinical psychologists often work with clients who are experiencing more severe or complex mental health problems.