- Contents: Section I: A.R. Cools, Introduction. A.R. Green, Behavioural Pharmacology of 5-HT: An Introduction. T.P. Blackburn, D.A. Martin, P. Slater, Is Rotational Behaviour in the Rat a 5-HT1A or 5-HT1B Mediated Response? A.J. Stoessl, C.T. Dourish, S.D. Iversen, Serotonic Mediated Behaviour Following Central or Peripheral Administration of the Selective NK-3 Tachykinin Agonist Senktide. Section II: P. Bevan, 5-HT and Sexual Behavior. S. Ahlenius, K. Larsson, New Aspects on the Serotonergic Modulation of Male Rat Sexual Behaviour. S.D. Mendelson, B.B. Gorzalka, Differential Roles of 5-HT Receptor Subtypes in Female Sexual Behaviour. M.D. James, S.M. Lane, D.R. Hole, C.A. Wilson, Hypothalamic Sites of Action of the Dual Effect of 5-HT on Female Sexual Behaviour in the Rat. L. R nyi, T. Lewander, 5-HT1A and 5-HT1B Agonists Produce Opposite Effects on the Ejaculatory Response Induced by Amphetamine in Rats. H.H.G. Berendsen, R.J.M. Smets, C.L.E. Broekkamp, Functional Interplay of Serotonin(5-HT)-Receptor Subtypes. Section III: P. Bevan, 5-HT and Aggression. B. Olivier, J. Mos, M. Tulp, J. Schipper, P. Bevan, Modulatory Action of Serotonin in Aggressive Behaviour. K.A. Miczek, P. Donat, Brain 5-HT System and Inhibition of Aggressive Behaviour. D.C. Blanchard, K. Hori, R.J. Rodgers, C.A. Hendrie, R.J. Blanchard, Differential Effects of Benzodiazepines and 5-HT1A Agonists on Defensive Patterns in Wild Rattus. C. Gentsch, M. Lichtsteiner, H. Feer, Competition for Sucrose-Pellets in Triads of Male, Wistar Rats, the Effects of Eight 5-HT- Agonists. Section IV: A.R. Cools, Depression and Psychosis. P. Willner, Towards a Theory of Serotonergic Dysfunction in Depression. J.F.W. Deakin, 5-HT Receptor Subtypes in Depression. J.A.M. van der Heyden, Modulation of the 5-HT System and Antipsychotic Activity. G.A. Kennet, G. Curzon, Mechanism of Action of 8-OH-DPAT on a Rat Model for Human Depression. P. Martin, A.M. Laporte, P. Soubrie, E. El Mestikawy, M. Hamon, Reversal of Helpless Behaviour in Rats by Serotonin Uptake Inhibitors. T.F. Meert, C.J.E. Niemegeers, Y.G. Gelders, P.A.J. Janssen, Ritanserin (R 55 667), an Original Thymosthenic. N.M. Barnes, B. Costall, A.M. Domeney, M.E. Kelly, R.J. Naylor, M.B. Tyers, The Abilities of 5-HT3 Antagonists to Inhibit the Hyperreactivity Caused by Dopamine Infusion into the Nucleus Accumbens of the Rat. M.A. Geyer, 5-HT2 Antagonists Increase Tactile Startle Habituation in an Animal Model of a Habituation Deficit in Schizophrenia. Section V: A.R. Cools, Feeding Behaviour. E. Goodall, T. Silverstone, Pharmacological Evidence for the Involvement of Serotonergic Mechanisms in Human Feeding. R. Samanin, Serotonin and Feeding. P.H. Hutson, G.A. Kennett, T.P. Donohoe, C.T. Dourish, G. Curzon, Opposite Effects of 5-HT1A and 5-HT1B/1C agonists on Food Intake. J.D. Leander, Effects of Selective Serotonergic Agonists on Palatability-Induced Ingestion. A.M.J. Montgomery, P. Willner, R. Muscat, 8-OH-DPAT Reliably Increases Ingestio