Derek Ellis
Department of Biology, University of Victoria, British Columbia, Canada

Karl-Erich Fichtelius
formerly of Dept of Histology, University of Uppsala, Sweden

Joseph Ghesquiere (1 Joint Paper)
Institute of Physical Education, K.U. Leuven, Belgium.

Sarah B.M. Kraak
Biological Centre, State University of Groningen, Netherlands.

Leon P. LaLumiere
formerly at the Naval Research Laboratory, Washington DC, USA (Died 1988)

Paul Leyhausen (1 Paper)
Professor of Ethology (retrd.) formerly head, Wuppertal Study Group, Max-Plank Institute for Physiology of Behaviour

Elaine Morgan (2 Papers)
Author of five books on the AAH

Cornelius J. van Nie
formerly dept of Anatomy and Biomechanics, Free University, Amsterdam.

John M. Patrick
Dept of Physiology, Aga Khan Medical College, Karachi, Pakistan.

Martin Pickford (1 Paper)
Institute of Paléontologie, Paris, France

Caroline M. Pond (1 Paper)
Dept of Biology, The Open University, Milton Keynes, United Kingdom.

Signe Preuschoft (1 Joint Paper)
Dept. of Comparative Physiology, State University of Utrecht, Netherlands

Vernon Reynolds (1 Paper)
Institute of Biological Anthropology, University of Oxford, United Kingdom.

Graham Richards (1 Paper)
Department of Psychology, East London University, United Kingdom

Machteld Roede
Dept. of Medical Philosophy and Health Ethics, State University of Limburg, Maastricht, Netherlands.

Erika Schagatay
Dept. of Animal Physiology, University of Lund, Sweden.

Alan Turner (1 Paper)
Hominid Paleontology Research Group, Dept. of Human Anatomy and Cell Biology, University of Liverpool, United Kingdom.

Marc Verhaegen
Author of several papers on the AAT. General practitioner in Putte, Belgium.

Peter E. Wheeler (1 Paper)
School of Natural Sciences, John Moore University, Liverpool, United Kingdom.

Jan Wind
Dept. of Human Genetics, Free University, Amsterdam and Gooi-Noord Hospital, Blaricum, Netherlands.