Evidence-based treatments are methods of intervention that have been shown through research to improve the functioning of individuals with certain mental health disorders. Researchers in psychology, medicine and other disciplines study different treatment methods to determine how effective they are, how they work and how to improve them. For example, a therapy that is commonly used by mental health professionals is Cognitive-Behavioural Therapy. This type of talk therapy involves changing how you think (the cognitive aspect of therapy) and what you do (the behavioural aspect of therapy), focusing primarily (although not exclusively) on day-to-day issues. Research has shown this type of therapy to be particularly helpful for individuals with anxiety and depression.