Psychopathology in great apes: Concepts, treatment options and possible homologies to human psychiatric disorders

Differential onset of infantile deprivation produces distinctive long‐term effects in adult ex‐laboratory chimpanzees (Pan troglodytes)

“…Some of the highest values were reached by the socially well adjusted LD members of MS2 group. One reason for this might be that we classified behaviors as aberrant by virtue of their quality, ignoring quantitative abnormalities (Bruene et al, 2006;Erwin & Deni, 1979). While this is methodologically sound it may not reflect what is truly abnormal in the behavior of these chimpanzees.…”

<Note> Coprophagy by the semi-habituated chimpanzees of Semliki, Uganda

“…Yet in apes, coprophagy is commonly considered to be abnormal behaviour in captive populations. It often appears in lists of problematic behaviours 2,3 , and is thought to be a response to boredom or stress 4 . Yet wild chimpanzee populations also engage in coprophagy: Autocoprophagy has now been reported from several long term study groups, including Assirik .…”

A pilot study on the effects of a change in behavioural management on the behaviour of captive chimpanzees (Pan troglodytes)

“…Most likely, a rehabilitation program for their social and natural behaviour should be developed. These may include changing social structures of groups, resuming human-animal interaction, or, depending on the type of abnormal behaviour, could also require an intervention (Brüne et al, 2006) to replace abnormal behaviour with a normal/natural (rewarding) activity. This intervention could consist providing cognitive challenges and natural-like diets that contain more fibres to increase foraging time and/or treating the chimpanzees for possible psychopathological consequences of chronic stress using psychopharmacological treatment (Brüne et al, 2006).…”