Response expectancy theory and application: A decennial review

Response expectancy is the anticipation of automatic, subjective, and behavioral responses to particular situational cues. More than a decade of research in diverse laboratories indicates that response expectancies are important considerations in designing and administering treatments and prevention programs for such problems as anxiety disorders, depression, substance abuse, and sexual dysfunction. Response expectancy also plays a central role in the effects of antidepressive medication, psychotherapy, and hypnosis. In addition, studies of the effects of placebos reveal that response expectancies can produce lasting changes in pain, anxiety, depression, alertness, tension, sexual arousal, alcohol craving and consumption, aggression, asthma, warts, and contact dermatitis. The veracity of many self-reported placebo effects have been corroborated by changes in physiological function.     

Lexicographic order preservation and stochastic dominance

Stochastic dominance concerns conditions on outcome probabilities that are necessary and sufficient for one act to be (strictly) preferred to another according to all preference relations that share certain properties, one of which customarily is an Archimedean property sufficient to entail existence of real-valued representations. We relax this assumption to permit linear lexicographic utility of finite and known dimensionality. In some situations, levels of the lexicographic hierarchy could correspond to explicit criteria or attributes. In our model, subjective probabilities emerge as matrix premultipliers of the outcome utility vectors. We thus obtain matrix probability generalizations of the familiar cumulative probability conditions for stochastic dominance.     

Selective reinforcement of schizophrenics' interview responses

In this experiment each of five examiners tested and interviewed four subjects in each of three conditions. The subjects were 60 male, hospitalized schizophrenics. The three conditions were the reinforcement, after an operant period, of “sick talk”, “healthy talk”, or plural nouns during a structured interview. Half the Welsh factor A and R scale items were administered before the interview, half after the interview. Significant differences were found among experimental conditions in terms of changes from operant to reinforced interview periods in percentage of “sick talk” emitted by subjects and changes from pre- to post-testing in terms of Welsh R scores. The correlation between these two measures of change was statistically significant. The results were discussed in terms of the different therapeutic strategies of neoanalytic and behaviour therapists.     

Organizational size and perceptions in a residential treatment program

Centralization of a residential mental health treatment program from three small houses to one large facility provided a naturally occurring opportunity to study the effect of organizational size on the perceptions held by clients and staff. Quantitative data were repeatedly collected on their perceptions of themselves, the organization as a whole, and subgroups within the organization during their involvement in both the small and large social contexts. Results of repeated measures analyses of variance provided considerable support for the theoretically derived hypotheses of heightened anxiety, self-impoverishment, more negative views of the psychosocial environment, and greater psychological distance in the large organizational context.