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The present investigation was designed to study the relationships between extraversion, d-amphetamine and modes of reinforcement in verbal operant conditioning. A factorial design involving two levels of extraversion (extraverts and introverts), two reinforcement conditions ('good' and 'electric shock') and three treatments (placebo and two doses, 7.5 and(More)
The present study examined the effects of caffeine on the estimation of felt width of blocks employing haptic presentation. Following a between-subject design, 160 male postgraduate students classified as high or low impulsives received either placebo or one of four doses of caffeine citrate (1, 2, 3 and 4 mg/kg body weight). A double-blind procedure was(More)
  • U Gupta
  • 1993
The present study examined the effects of caffeine on recognition performance after acquisition of conceptual and acoustic tasks. Following a between-subject design, 300 male postgraduate students classified as high or low impulsives received either placebo or one of four doses of caffeine citrate (1, 2, 3, and 4 mg/kg body weight). A double-blind procedure(More)
BACKGROUND AND OBJECTIVES Exercise-induced desaturation (EID) is associated with increased mortality in chronic obstructive pulmonary disease (COPD). However, the relationship of EID with anthropometric and clinical parameters of resting pulmonary function test and six-minute walk test (6MWT) in COPD remains unclear. The study was designed to assess the(More)
The effects of caffeine on free recall after acquisition on semantic and rhyming tasks were examined. Following a between-subjects design, high and low impulsive male postgraduate students were administered placebo and four doses of caffeine citrate (1, 2, 3 and 4 mg/kg body weight) in a laboratory situation. A double blind procedure was adopted for drug(More)
The effects of caffeine on kinesthetic aftereffect (KAE) were examined. Following a between-subjects design, high and low impulsive male postgraduate students were administered placebo and four doses of caffeine (1, 2, 3 and 4 mg/kg body weight) in a laboratory situation. A double blind procedure was adopted for drug administration. The study supports the(More)
  • U Gupta
  • 1984
The present investigation was designed to study the relationship between phenobarbitone, extraversion and modes of reinforcement in verbal operant conditioning. A factorial design involving three treatments (placebo and two doses, 30 and 100 mg, of phenobarbitone), two levels of extraversion (extraverts and introverts) and two reinforcement conditions(More)
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