Subclinical delusional ideation and appreciation of sample size and heterogeneity in statistical judgment

Previous studies demonstrate that people high in delusional ideation exhibit a data‐gathering bias on inductive reasoning tasks. The current study set out to investigate the factors that may underpin such a bias by examining healthy individuals, classified as either high or low scorers on the Peters et al. Delusions Inventory (PDI). More specifically, whether high PDI scorers have a relatively poor appreciation of sample size and heterogeneity when making statistical judgments. In Expt 1, high PDI scorers made higher probability estimates when generalizing from a sample of 1 with regard to the heterogeneous human property of obesity. In Expt 2, this effect was replicated and was also observed in relation to the heterogeneous property of aggression. The findings suggest that delusion‐prone individuals are less appreciative of the importance of sample size when making statistical judgments about heterogeneous properties; this may underpin the data gathering bias observed in previous studies. There was some support for the hypothesis that threatening material would exacerbate high PDI scorers' indifference to sample size.     

Impulsive nonconformity in female chat room users.

Heavy chat room use has been associated with social isolation, introversion, impulse control problems, and risk taking. Such characteristics form part of the cluster of traits associated with schizotypy. This study used multiple regression to examine the relationship between age, sex, four dimensions of schizotypy, and frequency of reported chat room use. The only significant association with schizotypy was between frequency of chat room use and impulsive nonconformity (IN) in females. These findings may be explained by the increased risk associated with female chat room use.     

Same clinic,different conceptions: Drug users’ and healthcare professionals’ perceptions of how stigma may affect clinical care

Stigma experienced by drug users by their healthcare professionals can be a barrier to treatment engagement, which in turn affects mortality and morbidity rates. Attribution theory suggests that stigma will be greatest whenever drug use is attributed to factors within personal control. Here, clients (n = 76) and healthcare professionals (n = 62) identified features that characterize good and bad clinical interactions, and responded to a vignette about a drug user who attributed his use to personal control or situational factors. Healthcare professionals completed the vignette and drug users gave their best guess of how healthcare professionals would react to this vignette. Clients and professionals held overlapping prototypes of clinical interactions. Clients overestimated both how negative healthcare professionals’ reactions would be, and the extent to which healthcare professionals’ reactions would accord with attribution theory. Despite healthcare professionals’ believing they are acting in nonstigmatizing ways, they may engender stigma in clinical situations more than they realize. Discrepancies between professionals’ hypothetical responses and clients’ anticipation of these responses are discussed in terms of the influence of self‐stigma and societal understandings of drug use and control. Attribution theory only offers a limited explanation for these discrepancies, because professionals’ beliefs about drug users are complex. Implications for theories of stigma and engagement with services are discussed, and the importance of clients’ anticipation of stigma is highlighted as a primary target for addressing treatment disengagement. Anti‐stigma campaigns may also benefit from changing their focus from individuals’ attributions to holistically addressing discrepant conceptions of treatment.     

The good and bad of relationships: how social hindrance and social support affect relationship feelings in daily life

The authors examined the effects of social hindrance and support on negative and positive relationship-specific feelings in three daily diary studies. Study 1 showed that hindrance and support independently predicted positive relationship feelings, but only hindrance predicted negative feelings. Study 2 used new measures of hindrance and support and showed that hindrance and support independently predicted same-day relationship feelings but that the effects of hindrance were stronger in magnitude. Study 3 yielded similar findings using the new measures of hindrance and support and controlling for morning feeling. These asymmetrical crossover effects suggest that bad is only stronger than good when it comes to bad outcomes; they also support the distinction between aversive and appetitive relational processes.     

Comparative Sacred Texts and Interactive Interpretation: Another Alternative to the “World Religions” Class

In this article we argue for an introductory course in the study of religion that proceeds through interactive interpretation as a responsible form of comparison. Interactive interpretation proceeds provisionally, and encourages students to formulate new questions of the materials instead of making final categories about the materials. We use examples from a typical classroom to show how we work with three pedagogical principles: (1) critical reading; (2) pluralism within religious traditions as well as between religious traditions; and (3) the use of the working hypothesis as a tool in analyzing religious texts. We also make an argument for textual reading as a form of living intellectual practice, which can work alongside of, and not in opposition to, other approaches to the study of religion, such as ethnographic or historical approaches.     

Book reviews

Private Practice Youngstown, Ohio 44512     

The effect of subject-generated and experimentersupplied code words on the phonetic mnemonic system

The hypothesis tested proposed that subjects using the phonetic mnemonic system who were supplied code words by the experimenter would recall more numbers than either subjects generating their own code words or a control group. In Experiment 1,36 undergraduate subjects serving in a 3 × (3) mixed-factorial design confirmed the hypothesis, but the possibility existed that the superiority of the experimenter-supplied group was attributable to the failure of the subject-generated group to devise a complete set of code words. In Experiment 2 a new group of 12 self-generated subjects was tested with a modified procedure designed to maximize number of correct code words. However, the experimenter-supplied group recalled significantly more numbers than this group, too. In Experiment 3 the possibility was tested that the superiority of the experimenter-supplied subjects was an artifact based on insufficient training in the phonetic method of subjects creating code words. Accordingly, all 28 subjects received extended training before recall of a subject-generated group was tested against that of an experimenter-supplied group in a 2 × (2) factorial design. Once again the experimentersupplied group recalled significantly more numbers, confirming the hypothesis. These results represent an exception to the general finding that subject-generated mnemonics are superior to those supplied by the experimenter. The data suggest that the relative efficacy of the two sources interacts with the difficulty of the mnemonic.     

Long-lasting aftereffect of brief prism exposure

The aftereffect of 15 min of active adaptation to wedge prism displacement was shown to persist for as long as 2 weeks.     

Paper or plastic? Data equivalence in paper and electronic diaries

Concern has been raised about the lack of participant compliance in diary studies that use paper-and-pencil as opposed to electronic formats. Three studies explored the magnitude of compliance problems and their effects on data quality. Study 1 used random signals to elicit diary reports and found close matches to self-reported completion times, matches that could not plausibly have been fabricated. Studies 2 and 3 examined the psychometric and statistical equivalence of data obtained with paper versus electronic formats. With minor exceptions, both methods yielded data that were equivalent psychometrically and in patterns of findings. These results serve to at least partially mollify concern about the validity of paper diary methods.