The journal publishes experimental, theoretical and review papers dealing with fundamental behavioural processes through the methods of natural science. Experimental papers may deal with any species, from unicellular organisms to human beings. Sample topics are cognition in man and animals, the phylogeny, ontogeny and mechanisms of learning, animal suffering and the neuroscientific bases of behaviour. Studies using pharmacological, physiological and biochemical techniques are appropriate provided they address behavioural issues. Theoretical papers can be at any level, from the cellular through top-down modelling of the whole organism, so long as whole-organism behaviour is a component. Quantitative treatments, neural-network and other parallel models, mathematical or computer models, are especially appropriate. Review papers should emphasize behavioural data; interdisciplinary topics, especially those that touch on the relations between behavioural and neural properties, are especially welcome. Most book reviews are solicited but unsolicited are also considered. In addition to full-length papers, short reports (less than 2000 words) are also considered. Conference abstracts, reports and announcements will be published at the editors' discretion.