1 Introduction: the Study of Primate Behaviour DESMOND MORRIS, Zoological Society of London
2 The Facial Displays of the Catarrhine Monkeys and Apes J. A. R. A. M. VAN HOOFF, Laboratorium voor Vergelijkende Fysiologie, Utrecht
3 Socio-sexual Signals and their Intra-specific Imitation among Primates 69 WOLFGANG WICKLER, Max-Planck-Institute fur Verhaltensphysiologie, Seewiesen
4 Allogrooming in Primates: a Review JOHN SPARKS, Ethology Laboratory, Zoological Society of London
5 Play Behaviour in Higher Primates: a Review CAROLINE LOIZOS
6 Variability in the Social Organization of Primates 219 T. E. ROWELL, Department of Zoology, Makerere University College, Kampala
7 Comparative Aspects of Communication m New World Primates M. MOYNIHAN, Canal Zone Biological Area, Smithsonian Institution
8 The Effect of Social Companions on Mother-Infant Relations in Rhesus Monkeys R. A. HINDE AND Y. SPENCER-BOOTH, Sub-Department of Animal Behaviour, Madingley, Cambridge
9 Mother-Offspring Relationships in Free-ranging Chimpanzees JANE VAN LA WICK-GOODALL, Sub-Department of Animal Behaviour, Madingley, Cambridge
10 An Ethological Study of Some Aspects of Social Behaviour of Children in Nursery School N.G. Blurton Jones, Department of Growth and Development, Institute of Child Health, University of London