1. A critique of recent studies on placebo effects of antidepressants: importance of research on active placebos

   • John D. Salamone

   Review 22 July 2000 Pages: 1 - 6

2. Patterns of opiate use in a heroin maintenance programme

   • Thomas V. Perneger
   • Annie Mino
   • Barbara Broers

   Original Investigation 27 July 2000 Pages: 7 - 13

3. Modulatory effects of dopamine D3/2 agonists on kappa opioid-induced antinociception and diuresis in the rat

   • Charles D. Cook
   • Andrew C. Barrett
   • Mitchell J. Picker

   Original Investigation 22 July 2000 Pages: 14 - 23

4. Responses to apomorphine of pigs with different coping characteristics

   • J.E. Bolhuis
   • W.G.P. Schouten
   • V.M. Wiegant

   Original Investigation 22 July 2000 Pages: 24 - 30

5. Comparing the subjective, psychomotor, and physiological effects of intravenous hydromorphone and morphine in healthy volunteers

   • Joanna L. Hill
   • James P. Zacny

   Original Investigation 26 July 2000 Pages: 31 - 39

6. Effect of hydrocortisone on the pituitary response to growth hormone releasing hormone

   • S. Watson
   • R. J. Porter
   • A. H. Young

   Original Investigation 27 July 2000 Pages: 40 - 46

7. Comparison of the effects of clozapine, haloperidol, chlorpromazine and d-amphetamine on performance on a time-constrained progressive ratio schedule and on locomotor behaviour in the rat

   • S. Mobini
   • T.-J. Chiang
   • E. Szabadi

   Original Investigation 21 July 2000 Pages: 47 - 54

8. The selective serotonin (5-HT)_1A receptor ligand, S15535, displays anxiolytic-like effects in the social interaction and Vogel models and suppresses dialysate levels of 5-HT in the dorsal hippocampus of freely-moving rats

   • A. Dekeyne
   • M. Brocco
   • M.J. Millan

   Original Investigation 20 July 2000 Pages: 55 - 66

9. Role of nucleus accumbens dopamine D₁ and D₂ receptors in instrumental and Pavlovian paradigms of conditioned reward

   • Michael Koch
   • Annette Schmid
   • Hans-Ulrich Schnitzler

   Original Investigation 19 July 2000 Pages: 67 - 73

10. Zolmitriptan (a 5-HT_1B/1D receptor agonist with central action) does not increase symptoms in obsessive compulsive disorder

    • M.L. Boshuisen
    • J.A. den Boer

    Original Investigation 27 July 2000 Pages: 74 - 79

11. Long-term therapeutic drug monitoring of clozapine and metabolites in psychiatric in- and outpatients

    • Michael Dettling
    • Christoph Sachse
    • Jürgen Schmider

    Original Investigation 19 July 2000 Pages: 80 - 86

12. Subchronic hydrocortisone treatment alters auditory evoked potentials in normal subjects

    • C. Heather Ashton
    • Brian Lunn
    • Allan H. Young

    Original Investigation 28 July 2000 Pages: 87 - 92

13. The dopamine D3/2 agonist 7-OH-DPAT attenuates the development of morphine tolerance but not physical dependence in rats

    • Charles D. Cook
    • Andrew C. Barrett
    • Mitchell J. Picker

    Original Investigation 22 July 2000 Pages: 93 - 104

14. NKP608, an NK₁ receptor antagonist, has an anxiolytic action in the social interaction test in rats

    • Sandra E. File

    Original Investigation 26 July 2000 Pages: 105 - 109

15. Repeated stimulation of L-type calcium channels in the rat ventral tegmental area mimics the initiation of behavioral sensitization to cocaine

    • S.C. Licata
    • A.Y. Freeman
    • R.C. Pierce

    Original Investigation 22 July 2000 Pages: 110 - 118

16. Acute depletion of plasma tryptophan does not alter electrophysiological variables in healthy males

    • John H. Hughes
    • C. Heather Ashton
    • A.H. Young

    Letter to the Editors 28 July 2000 Pages: 119 - 121

17. Antipsychotic drugs, serum creatine kinase (CPK) and possible mechanisms

    • S. Devarajan
    • S.M. Dursun

    Letter to the Editors 27 July 2000 Pages: 122 - 122