the oleic acid on a live and wriggling sister or mother and refrain from evicting her from our hive. But does the occur rence of unintelligent behavior suffice to demonstrate the total absence of mental experience under any circumstances? Ethologists from some distant galaxy could easily discern ex amples of stupid and maladaptive behavior in our own species. But do instances of human stupidity prove that none of us is ever consciously aware of what he is dOing? No available evi dence compels us to believe that insects, or any other animals, experience any sort of consciousness, or intentionally plan any of their behavior. But neither are we compelled to believe the contrary. In areas where data are few and of limited rel evance, dogmatic negativity can easily limit what scientists even try to investigate, and thus perhaps delay or prevent im portant insights and discoveries. Many of the participants agreed that a good starting point would be to consider what we know of our own thinking, subjec tive feelings, and consciousness, and then move on to inquire whether other species experience anything similar. Such an ap proach was once considered fallaciously anthropomorphic. But it seems now to be widely if not universally recognized that this is a serious objection only if one has already assumed in advance that conscious thinking is uniquely human, and the accu sation of anthropomorphism is then merely a reiteration of the prior conviction.

Inhalt
Brain Functions and Mental Processes.- Some Perspectives on the Evolution of Intelligence and the Brain.- Mental Processes in the Nonverbal Hemisphere.- Risk-benefit Assessment in Animals.- The Ecological Conditions of Thinking.- Social Knowledge in Free-ranging Primates.- Primate Social Intelligence: Contributions from the Laboratory.- Internal Representation.- Problem Solving.- Ascent of Apes.- Cognitive Knowledge and Executive Control: Metacognition.- On the Evolution of Cognitive Processes and Performances.- Study of Vertebrate Communication Its Cognitive Implications.- The Insect Mind: Physics or Metaphysics?.- Cognitive Aspects of Ape Language Experiments.- Group Photo: Neuropsychological Approaches.- Neuropsychological Approaches State of the Art Report.- Group Photo: Evolutionary Ecology of Thinking.- Evolutionary Ecology of Thinking State of the Art Report.- Group Photo: Comparative Approaches to Animal Cognition.- Comparative Approaches to Animal Cognition State of the Art Report.- Group Photo: Communication As Evidence of Thinking.- Communication As Evidence of Thinking State of the Art Report.- Afterthoughts on Animal Minds.- List of Participants.- Author Index.