Het gebruik van ethologische gedragsmetingen bij de diagnostiek van sociale deprivatie [The use of ethological behaviour measurements for the diagnosis of social deprivation]

A comparison was made between the behaviour of 61 severely socially deprived children and 41 controls during a psychiatric screening session. Ages ranged from 1.5 to 12 years. The occurrence of directly observable ethological categories of social interaction, activity and play was determined by use of a keyboard. Problem children differed from...

How rhesus monkey infants budget their time between mothers and peers

Social play between two rhesus monkey (Macaca mulatta) infants takes place mainly when they are both not in body contact with their mothers. This suggests that social play and mother-infant body contact are potential competitors in the infants' time budgets. We investigated whether the presence of a playmate changed the duration of mother-infant...

Adequate mothering by partially isolated rhesus monkeys after observation of maternal care

13 laboratory-born female monkeys were allowed to remain with their mothers for about 4 mo and were subsequently singly caged in rooms where they were able to see other monkeys. Ss that did not see mothers caring for their infants neglected their own firstborn. In contrast, Ss that were allowed to observe separately caged mother–infant pairs...

Autisme: inhoud en afgrenzing van het syndroom [Autism: contents and limitations of the syndrome]

This article deals with the question which behavioural deviations might be included in autism. For answering this question, a good correlation of diagnostic behaviour patterns was taken as a starting point. The behaviour of 25 childeren with severe disturbances in their social relationships, including autism in only part of the cases, was...