Psychoedukation bei Personen mit erh?htem Psychoserisiko

Background

So far only few studies are available which have evaluated the effectiveness of psychoeducation for individuals at risk of psychosis in the early initial prodromal state (EIPS) whereas the benefit of psychoeducation in psychotic patients has been repeatedly confirmed. Thus the aim of this study was to investigate the effect of psychoeducation in individuals with increased risk of psychosis in the EIPS.

Method

A total of 128 help-seeking outpatients in the EIPS participated in a randomized controlled multicentre trial of 12 months of either psychoeducation as part of an integrated psychological intervention (IPI) or supportive counseling (SC). The time to transition to psychosis at 12-month and 24-month follow-up as well as the social adjustment at baseline, time of transition or post-treatment by means of the social adjustment scale (SAS?II) were assessed.

Results

The IPI was superior to SC in preventing progression to psychosis at 12-month (3.2% versus 16.9%, p?=0.008) and 24-month follow-up (6.3% versus 20.0%, p?=0.019). Both treatments resulted in significant pre-post improvements in SAS?II with no significant differences between the two groups.

Conclusions

Psychoeducation as part of an integrated intervention is effective for preventing the onset of psychosis over a 24-month time period in people in an EIPS. Moreover patients at risk of developing first episode psychosis seem to benefit from a specific psychoeducational intervention in the context of other treatments as well as from SC.     

Psychological research and the prostate-cancer screening controversy

In October of 2011, the U.S. Preventive Services Task Force released a draft report in which they recommended against using the prostate-specific antigen (PSA) test to screen for prostate cancer. We attempt to show that four factors documented by psychological research can help explain the furor that followed the release of the task force's report. These factors are the persuasive power of anecdotal (as opposed to statistical) evidence, the influence of personal experience, the improper evaluation of data, and the influence of low base rates on the efficacy of screening tests. We suggest that augmenting statistics with facts boxes or pictographs might help such committees communicate more effectively with the public and with the U.S. Congress.     

Beyond Vicary’s fantasies: The impact of subliminal priming and brand choice

With his claim to have increased sales of Coca Cola and popcorn in a movie theatre through subliminal messages flashed on the screen, James Vicary raised the possibility of subliminal advertising. Nobody has ever replicated Vicary’s findings and his study was a hoax. This article reports two experiments, which assessed whether subliminal priming of a brand name of a drink can affect people’s choices for the primed brand, and whether this effect is moderated by individuals’ feelings of thirst. Both studies demonstrated that subliminal priming of a brand name of drink (i.e., Lipton Ice) positively affected participants’ choice for, and their intention to, drink the primed brand, but only for participants who were thirsty. Theoretical and practical implications of these findings are discussed.     

Is ecology an ‘alternative’ natural science?

This article discusses whether ecology represents an alternative type of natural science, that is normatively committed. Central questions are:-how man and human action are integrated into the subject matter of ecology;-whether evaluative concepts like health are incorporated into the conceptual structure of ecology; and-whether ecology transcends the image of natural knowledge as control of nature.It is concluded that all hypotheses of ecology being inherently judgmental in character must be rejected.Like all the healing arts, ecology is through and through judgmental in character. It cannot be value-neutral.... What violates the natural harmony must be condemned; what enhances it be endorsed.... Ecology is the closest our science has yet come to an integrative wisdom. It, not physics, deserves to become the basic science of the future.     

Attribution of Arousal as a Mediator of the Effectiveness of Fear-Arousing Communications1

Before watching a fear-arousing antismoking movie, male smokers were administered a placebo pill that was said to have either arousing, tranquilizing, or no side effects. Subjects reported less intention to reduce smoking when they could attribute their arousal to the presumably arousing pill, and greater intention to do so when they expected the pill to be tranquilizing, than when they expccted no side effects. The self-reported number of cigarettes smoked during a two-week period following the experiment decreased in both the tranquilizing and no side-effects conditions, but not in the arousing side-effects condition. The data on subjects' i]ntentions are consistent with predictions derived from Kelley's discounting and augmentation principles and demunstrate informational functions of affective states. Several explanations concerning the differences between intentions and behavior are discussed, and implications concerning strategies for behavior change are explored.     

Continuous selection

Summary A model of target selection in continuous search tasks is outlined. The model was designed to account for two basic observations that are difficult to cover within the framework of the traditional target-control-type models of search, namely, pure detection (detection without identification) and pseudotarget detection (detection of new items not to be searched for). The model combines two basic assumptions: first, that targets are detected by default, that is, by virtue of the fact that they do not fit into an internal model of to-be-expected events (target detection by default) and second, that this internal model is generated, maintained, and updated on the basis of the nontarget information encountered during search (integration of non-target information). Furthermore, it is assumed that non-target integration and target detection can both be carried out at several processing levels simultaneously. The evidence available to support and develop the model is reviewed, and some of its general implications for a theory of selective attention are discussed.This paper is a selective summary of experimental work done in collaboration with Dieter Nattkemper and Cristina Meinecke and supported by the Deutsche Forschungsgemeinschaft (grant Pr 118/5)     

Rasch-representable reaction time distributions

This article investigates properties of a representation based on the Rasch test model for reaction times (RT) that was proposed by Micko. Necessary and sufficient conditions for a set of RT distributions to be Rasch-representable are derived. It is shown that independent serial and independent parallel processing models cannot be reconciled with the representation. However, random extreme models compatible with the Reasch-representation exist that assume RT is determined by the longest or he shortest processing time of a random number of independent paraloel channels. Nonparametric properties of Rasch-representable distributions are derived that can be used for testing the model and for estimating its parameters. Conditions are presented for Rasch-representable distributions to form a scale family. Finally, Rasch-represent-able distributions are characterized interms of their hazard functions.For helpful discussions, we are grateful to Hans Irtel, Christoph Micko, Hartmann Scheiblechner, and Hans-Henning Schultz.