| Hughes, J R; Oliveto, A H; MacLaughlin, M (2000) Is dependence on one drug associated with dependence on other drugs? The cases of alcohol, caffeine and nicotine. Am J Addict 9:196-201 |
| Hughes, J R; Liguori, A; Dominick, A et al. (1999) Effect of smoking abstinence on the subjective effects of caffeine. Nicotine Tob Res 1:229-32 |
| Liguori, A; Grass, J A; Hughes, J R (1999) Subjective effects of caffeine among introverts and extraverts in the morning and evening. Exp Clin Psychopharmacol 7:244-9 |
| Hughes, J R; Oliveto, A H; Liguori, A et al. (1998) Endorsement of DSM-IV dependence criteria among caffeine users. Drug Alcohol Depend 52:99-107 |
| Hughes, J R; McHugh, P; Holtzman, S (1998) Caffeine and schizophrenia. Psychiatr Serv 49:1415-7 |
| Hughes, J R; Hale, K L (1998) Behavioral effects of caffeine and other methylxanthines on children. Exp Clin Psychopharmacol 6:87-95 |
| Hughes, J R; Oliveto, A H (1997) A systematic survey of caffeine intake in Vermont. Exp Clin Psychopharmacol 5:393-8 |
| Liguori, A; Hughes, J R; Goldberg, K et al. (1997) Subjective effects of oral caffeine in formerly cocaine-dependent humans. Drug Alcohol Depend 49:17-24 |
| Liguori, A; Hughes, J R; Oliveto, A H (1997) Caffeine self-administration in humans: 1. Efficacy of cola vehicle. Exp Clin Psychopharmacol 5:286-94 |
| Oliveto, A H; Bickel, W K; Hughes, J R et al. (1997) Functional antagonism of the caffeine-discriminative stimulus by triazolam in humans. Behav Pharmacol 8:124-38 |
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