Individuals with depression or anxiety often experience a loss of pleasure, interest, or joy in usual activities. Low positive affect (a core feature of anhedonia) is a risk factor for poor prognosis and suicidality, yet treatments to date have been relatively ineffective in targeting it. Based on advances in behavioral and neuroscience, Positive Affect Treatment (PAT) was developed to specifically target areas of reward sensitivity that are believed to contribute to anhedonia.