One symptom of depression is loss of motivation, which can be defined as responsiveness to response-eliciting stimuli and quantified as reward-related behavioral output. Long-term changes in reward-related behavior have been shown to follow early life stress. Most rodent studies investigating the effects of postnatal separation, an early stress,…

Conference papers and discussions presented in this volume reflect recent research results that suggest the human infant is not a tabula rasa but an organism endowed at birth with an array of capabilities. Contents focus on several issues, including the possibility that infants have a rich affective life from their earliest days and that even…