Psychiatry

Empirically validated methods for reducing stigma and prejudice toward recipients of behavioral health-care services are badly needed. In the present study, two packages presented in 1-day workshops were compared to a biologically oriented educational control condition in the ...

This pilot study applied a theoretically derived model of acceptance-based treatment process to smoking cessation, and compared it to a pharmacological treatment based on a medical dependence model. Seventy-six nicotine-dependent smokers were randomly ...

The purpose of this study was to examine the transfer of consequential (reinforcement and punishment) functions through equivalence relations. In Experiment 1, 9 subjects acquired three three-member equivalence classes through matching-to-sample training using arbitrary visual forms. Comparison stimuli were then given conditioned reinforcement or punishment functions by pairing them with verbal feedback during a sorting task. For 8 of the 9 subjects, trained consequential functions transferred through their respective equivalence classes without additional training. In Experiment 2, transfer of function was initially tested before equivalence testing per se. Three of 4 subjects showed the transfer without a formal equivalence test. In Experiment 3, 3 subjects were given training that gave rise to six new three-member conditional equivalence classes. For 2 of the subjects, the same stimulus could have either a reinforcement or punishment function on the basis of contextual cues that defined its class membership. Experiment 4 assessed whether equivalence training had established general or specific consequential functions primarily by adding novel stimuli in the transfer test. Subjects treated even novel feedback stimuli in the transfer test as consequences, but the direction of consequential effects depended upon the transfer of specific consequential functions through equivalence relations.

We assessed blind integrity in a double-blinded study comparing paroxetine 20 mg with inert placebo in 20 volunteer subjects who were attempting to stop using methamphetamines. At the end of the study, the blinded clinicians reviewed subject charts and attempted to identify the assigned conditions for the 13 subjects who completed two or more weeks of the study. The three subjects who completed the entire study also attempted to identify their conditions on a questionnaire. We conclude that the blind may unwittingly be broken when the treatments under study are placebo and the selective serotonin reuptake inhibitor (SSRI) paroxetine. The integrity of the blind should be tested in all double-blind SSRI studies.