separation elicits distress cries and then depression with potential long term
effects, with various physiological consequences, e.g. increase in heartrate,
anxiety response.
Therapists treating children separated from their parents during wartime noted
that after initial signs of distress, the children became depressed with
various symptoms of apathy, failure to grow, etc. (See John Bowlby's 1969
Attachment and Loss.) Harlow, in his well-known "mother love" studies looked
into attachment and its long term effects on rhesus monkeys. Normal monkeys
show the patterns below at all stages of life. Monkeys deprived of normal
mothering showed serious deficits as fearful, depressed juveniles and
inadequate adults.
I imagine other NHPs would show similar depressive effects of separation from
mothering.
