From A to Z? Retrieval-induced forgetting of non-verbal information indicates how writing systems can shape memory organisation

We investigated retrieval-induced forgetting of motor sequences in samples of Chinese participants. Retrieval-induced forgetting occurs when selective retrieval of a subset of information stored in memory causes forgetting for the non-retrieved rest. This phenomenon critically depends on the organised storage of separate categories of memory representations. In studies with participants from a Western culture (Germany), a categorization in left- and right-hand movements previously had been supported by letter stimuli based on a spatial mental representation of the Roman alphabet. The same assignment of letters from the beginning or end of the alphabet to motor sequences performed either with the left- or the right-hand did not entail retrieval-induced forgetting in the present study, however (Experiment 1). In Experiment 2, visual features of displaying to-be-learned sequences additionally supported a distinction into left and right. In Experiment 3, learning trials provided verbal category labels. The occurrence of retrieval-induced forgetting in the latter two experiments suggests language-dependent organisation of non-verbal items in memory.     

Generosity and livelihoods: Dictator game evidence on the multidimensional nature of sharing among the Kenyan Maasai

This paper investigates whether sharing behavior is multidimensional and embedded in social organization and modes of economic production. It uses a modified dictator game varying social distance to the recipient and varying the resource (money vs. six in-kind resources) being shared among the pastoral Maasai of Kenya. Results show that both social distance and the nature of the resource matter for sharing as well as their combination. The discussion argues that these findings are consistent with the nature and role of these resources in the pastoral livelihood among the Maasai.     

Dyadic judgments based on conflicting samples: The failure to ignore invalid input

The present research demonstrates a so far unrecognized impediment of group performance, metacognitive myopia (Fiedler, 2012). Judges and decision-makers follow the given samples of information uncritically and neglect the metacognitive assessment of the samples' validity. Applying this notion to dyadic judgments, we instructed dyads to jointly estimate conditional probabilities p (Win|A) and p (Win|B) of Lotteries A and B. One person per dyad experienced a valid sample (winning rates conditional on lotteries). The other person experienced an invalid, reverse sample (lotteries conditional on winning). Whereas valid samples provide unbiased estimates of lotteries' winning probabilities, invalid samples can greatly misrepresent the association of winning and lotteries (depending on lottery base rates). Across three experiments, metacognitive myopia—both at the individual and at the dyadic group level—prevented participants from discriminating valid and invalid samples. Group judgments were biased toward erroneous implications of invalid samples, reflecting an equality bias among unequal group members.     

Kant's Pragmatism

This article offers a definition of the term ‘pragmatic’, as it is used in Kant's Critique of Pure Reason. The definition offered does not make any reference to the affinities between Kant's pragmatism and the philosophies of the American or other pragmatists but draws its definiens entirely from the Kantian conceptual framework. It states that the term ‘pragmatic’ denotes imperatives, laws and beliefs of a specific type: an imperative is pragmatic if and only if it is concerned with the choice of means to individual or universal happiness; a law is pragmatic if and only if our willingness to presuppose it results from our obedience to a pragmatic imperative; and a belief is pragmatic if and only if it relates to the objective validity of pragmatic laws. This article also discusses two rival definitions of the term ‘pragmatic’ (as used by Kant) that have been brought forward by Sidney Axinn and Nicholas Rescher.     

Symptomattributionsstile bei Hypochondrie

Background

Somatic symptom attributions are of central importance in cognitive-behavioral models of the development, maintenance and treatment of hypochondriasis. However, the mode of symptom attribution has rarely been systematically investigated in these patients. Is a somatic mode of symptom attribution indeed specific for hypochondriasis and furthermore, how strongly is it associated with “doctor shopping”, a typical behavioral consequence of hypochondriasis?

Patients and methods

In this study 88 hypochondriacal, 52 depressive and 52 healthy persons were asked to complete the symptom interpretations questionnaire and several standardized symptom questionnaires. They also took part in two structured clinical interviews for the diagnosis of hypochondriasis and various other psychological disorders according to DSM-IV.

Results

Somatic symptom attributions were associated specifically with hypochondriasis, while normalizing attributions characterized persons with low health anxiety. When examined as predictors in multiple regression models, in particular somatic attributions and the total of somatoform complaints predicted the intensity of health anxiety (R ²?=?0.69) and “doctor shopping” (R ²?=?0.48).

Conclusion

In the cognitive-behavioral treatment of hypochondriasis, patients should be encouraged to test normalizing explanations as alternatives to habitual somatic attributions of somatic disturbances.     

Relevant dimensions of cyberbullying — Results from two experimental studies

Cyberbullying is a prevalent problem of adolescents. However, several conceptual and measurement questions, regarding its defining characteristics and relevant dimensions in comparison to conventional bullying, remain unanswered. To this end we conducted two studies with experimental methods. Study I shows that power imbalance in terms of perceived popularity is relevant for the affective, cognitive, and behavioral experience of cyberbullying. Cyberbullying by a popular bully is more distressing than cyberbullying by an unpopular bully. Study II shows that factors unique to cyberbullying are also relevant for the experience of cyberbullying, namely the media and the type of cyberbullying. For example, different types of cyberbullying are related to different patterns of relevant coping strategies. Therefore, cyberbullying seems both a unique phenomenon and closely related to conventional bullying.     

Boosting One's Social Identity: Effects of Social Exclusion on Ethnocentrism

The present research examined the effects of social exclusion on ethnocentrism. It was reasoned that expressions of ethnocentrism boost one's social identity, which can serve as a buffer to the thwarted need to belong. In fact, Study 1 revealed that social exclusion, relative to a neutral control condition, increased participant's expressions of ethnocentrism. A second study replicated this finding and showed that social exclusion experiences also increase ethnocentrism relative to a social acceptance and a negative, non-rejection condition. These findings suggest that the effects of social exclusion on ethnocentrism are specific to the thwarted need to belong.     

Failing to Establish Evaluative Conditioning Effects for Indirect Intergroup Contact on Facebook

On Facebook, connections between users are published within “friends” lists. Therefore, ties between in- and outgroup members may be easily observed. We simulated this novel form of indirect intergroup contact through an evaluative conditioning (EC) procedure and tested if intergroup attitudes may be influenced positively. To be specific, we presented outgroup members as conditioned stimuli (CSs) and mutual friendship as positively valenced unconditioned stimulus (US). To test our hypotheses, we carried out eight studies measuring explicit and implicit attitudes as well as prosocial intentions toward a target outgroup. However, results demonstrate consistently that the EC procedure did not improve attitudes.