Definition: Withdrawal from other people, ranging from intimate relationships to the world at large; restricted affective experience and expression; limited hedonic capacity
Social withdrawal Preference for being alone to being with others; reticence in social situations; avoidance of social contacts and activity; lack of initiation of social contact
Social detachment Indifference to or disinterest in local and worldly affairs; disinterest in social contacts and activity; interpersonal distance; having only impersonal relations and being taciturn with others (e.g., solely goal- or task-oriented interactions)
Intimacy avoidance Disinterest in and avoidance of close relationships, interpersonal attachments, and intimate sexual relationships
Restricted affectivity Lack of emotional experience and display; emotional reactions, when evident, are shallow and transitory; unemotional, even in normally emotionally arousing situations
Anhedonia Lack of enjoyment from, engagement in, or energy for life’s experiences; deficit in the capacity to feel pleasure or take interest in things