Bayesian Rationality for the Wason Selection Task? A Test of Optimal Data Selection Theory

Oaksford and Chater (1994) proposed to analyse the Wason selection task as an inductive instead of a deductive task. Applying Bayesian statistics, they concluded that the cards that participants tend to select are those with the highest expected information gain. Therefore, their choices seem rational from the perspective of optimal data selection. We tested a central prediction from the theory in three experiments: card selection frequencies should be sensitive to the subjective probability of occurrence for individual cards. In Experiment 1, expected frequencies of the p- and the q-card were manipulated independently by concepts referring to large vs. small sets. Although the manipulation had an effect on card selection frequencies, there was only a weak correlation between the predicted and the observed patterns. In the second experiment, relative frequencies of individual cards were manipulated more directly by explicit frequency information. In addition, participants estimated probabilities for the four logical cases and of the conditional statement itself. The experimental manipulations strongly affected the probability estimates, but were completely unrelated to card selections. This result was replicated in a third experiment. We conclude that our data provide little support for optimal data selection theory.     

Dual brain,creativity, and health

Abstract

The importance of the specialized functions of the right and left hemispheres is reviewed, with applications to education, treatment, creativity, and research duly noted. Experimental studies serve as indications of how alexithymia and creativity of the so‐called dual brain has been examined. Patients with com‐missurotomies, patients in psychotherapy, priests, creative subjects, and normal controls have been compared through a variety of experimental methods in terms of hemispheric specialization. The results indicate that creative and healthy subjects tend to have freer access to mutual interaction of both hemispheres without marked inhibitory or disinhibitory effects from either cerebral hemisphere.     

Values,Life Events,and Health: A Study in a Finnish Rural Community

The relationships between individual values (Schwartz, 1992), life events, and psychological symptoms were analyzed in a general population sample from a Finnish rural community. The design was a cross‐sectional survey. Data were gathered in 1993 (n = 174) and 2007 (n = 226). We investigated whether personal values would predict the number of life events. Results showed that openness to change values was positively and conservation values, negatively related to life events (those over which the individual had certain degree of control, e.g. getting a new job) in 1993. As expected, an increase in the importance of conservation values from 1993 to 2007 weakened the association between values and life events so that in 2007, only stimulation values were related to events. Although no consistent direct relations were found between single values and symptoms, we found that the higher the value congruence between individual and group values, the fewer the reported symptoms, for both time points. This research provided evidence suggesting that life events are also related to one's personal value priorities. Copyright © 2012 John Wiley & Sons, Ltd.     

The de‐escalation of commitment: predecisional accountability and cognitive processes

Escalation of commitment describes the continuation of a course of action in spite of drawbacks and continuing insecurity of goal achievement. To prevent escalation and its associated costs, de‐escalation techniques are valuable. The present study investigates predecisional accountability to an unknown audience as a de‐escalation technique. In addition, the evolution of cognitive processes (reasons for persisting) during escalation is examined. As predicted, predecisional accountability has a de‐escalating effect. In addition, escalation is accompanied by an increase of nonrational reasons for continuing the respective course of action, and decision makers without accountability provide more nonrational reasons for not quitting than those who are held accountable.     

Behavioral Differences between Rabbits and Cats

The sensory modality of a task and the modality of a retroactive interfering activity were systematically covaried in order to test Connolly and Jones' and Pick's translation models of intersensory functioning. Forty 10-year-old boys and girls were asked to recall distance and location cues of length under intrasensory and intersensory task conditions (visual and kinesthetic). Visual and kinesthetic interpolated activities were used in an attempt to provide modality specific interference with the recall of length under the various sensory task conditions. Results of the data analyses provided no support for the Connolly and Jones model of modality specific storage with translation. Rather, the findings of the study were interpreted as supportive of Pick's hypothesis which emphasizes the coding of stimulus information (regardless of modality of input) into a form specific to whatever modality is specialized for detection of the information.     

Social categorization and group‐motivated interindividual–intergroup discontinuity

Research on the interindividual–intergroup discontinuity effect has demonstrated that intergroup relations are often less cooperative than interindividual relations. The aim of the present paper is to test whether mere social categorization suffices to create a group‐motivated discontinuity effect. In two experiments, we manipulated actors' personal versus social identity salience, whereas controlling for actors' outcome independence (1 : 1) versus interdependence (3 : 3). Making actors' social identity salient using a minimal group treatment was sufficient to increase defection in a Prisoner's Dilemma Game, irrespective of whether this was in an interindividual or intergroup interaction (Experiment 1). Using a Mutual Fate Control matrix in Experiment 2, results indicate that this effect can be attributed to actors' increased motivation to maximize relative differences to outgroup opponents under social identity salience. Copyright © 2012 John Wiley & Sons, Ltd.     

Psychoanalyse und Traumatherapie

The author is of the opinion that for patients with combined traumas of commitment and violence a psychoanalytical long-term treatment which takes into consideration the peculiarities of this group of patients will continue to be the therapy of choice. Special ??trauma therapies?? may be useful after acute traumas and in cases in which external conditions exclude psychoanalytical treatment. Depending on the situation of the individual case, though, specific modifications of the technique may be necessary, which possibly include proven specific trauma therapeutic techniques as parameters. Based on the parallelism of the economic aspect of the trauma and the aspect of object relationship, a decisive role in the therapeutic process befits the recognition of the traumatic reality and the working out of traumatic transference, which, however, must not traumatize under any circumstances. This is accompanied by the restitution of a good interior object, which only becomes possible within a frame giving security and support. The establishment and preservation of this frame may also be due to especially required parameters derived from trauma therapies, the psychodynamic significance of which must be analyzed with the individual patient. The author's approach is clarified by two case vignettes in which the theoretical reflections have led to very different technical procedures. The author comes to the conclusion that the psychoanalytical trauma therapy shows how therapeutic concepts aiming at an optimum result must still be tailored to the individual case.     

Evaluative conditioning depends on higher order encoding processes

Evaluative conditioning (EC) is commonly conceived as stimulus-driven associative learning. Here, we show that internally generated encoding activities mediate EC effects: Neutral conditioned stimuli (CS) faces were paired with positive and negative unconditioned stimuli (US) faces. Depending on the encoding task (Is CS a friend vs. enemy of US?), Experiment 1 yielded either normal EC effects (CS adopting US valence) or a reversal. This pattern was conditional on the degree to which encoding judgements affirmed friend or enemy encoding schemes. Experiments 2a and 2b replicated these findings with more clearly valenced US faces and controlling for demand effects. Experiment 3 demonstrated unconditional encoding effects when participants generated friend or enemy relations between CS and US faces. Explicitly stated friend or enemy relations in Experiment 4 left EC effects unaffected. Together, these findings testify to the importance of higher order cognitive processes in conditioning, much in line with recent evidence on the crucial role of conditioning awareness.     

Reactions and Strategies of German Catholic Priests to Cope with Phases of Spiritual Dryness

Journal of Religion and Health - We investigated strategies of 763 Catholic priests (response rate 36%) to deal with phases of spiritual dryness, specifically their reactions toward these feelings,...