The results suggest a unique contribution of one aspect of anhedonia in obsessive-compulsive disorder and confirm the importance of investigating the role of anhedonia transdiagnostically beyond affective and psychotic disorders.

Response time during a gambling task, an index of difficulty of making value-based choices, significantly correlated with anhedonia in individuals with OCD and individuals with HD, even after controlling for general depression, but not in individuals with PTSD. The same relations were weaker in HD and absent in PTSD. Data revealed the positive theoretically predicted correlation between anhedonia and risk perception in OCD effects on self-reported risk taking and behavior-based risk aversion were non-significant. It was found that exposure to CSI produces anhedonic-type behaviour and an anxiogenic profile in adolescent male rats, as evidenced in both the SPT and EPM. Both self-report and behavior-based measures were used to characterize individual risk aversion: risk perception and risk-taking propensities (measured using the Domain Specific Risk Taking scale) and risk attitudes evaluated using a gambling task. Second, anhedonia was operationalized as a reduced sensitivity to rewards, which allowed employing the value based decision making framework to investigate effects of anhedonia on reward-related behavioral outcomes, such as increased risk aversion and increased difficulty of making value-based choices. While sexual anhedonia can be caused by mental health issues such as depression, it may also occur due to chemical and hormonal imbalances in the body. First, the data revealed a positive contribution of anhedonia, beyond the effects of general depression, to symptom severity in OCD but not in HD or PTSD. In psychology, anhedonia (< an- + Greek hdon pleasure ) is an inability to experience pleasure from normally pleasurable life events such as eating.

The second type of happiness is called eudaimonia, which is the fulfillment derived from pursuing purposeful activities. Hence, hedonism is described as enjoyment that can include a number of things that different people enjoy. Anhedonia is a transdiagnostic construct that can occur independent of other symptoms of depression its role in neuropsychiatric disorders that are not primarily affective, such as obsessive compulsive disorder (OCD), hoarding disorder (HD), and post-traumatic stress disorder (PTSD) has received limited attention. The most common examples of hedonic pleasure are sex and food.

An hedonic