Differential dynamics of spatial and non-spatial stimulus-response compatibility effects: a dual task LRP study

Choice reaction times are shorter when stimulus and response features are compatible rather than incompatible. Recent studies revealed that spatial compatibility effects in Simon tasks are strongly attenuated when there is temporal overlap with a different high-priority task. In contrast, non-spatial variants of the Simon task appear to be unaffected by task overlap. The present study used the lateralized readiness potential (LRP) within a dual task design to elucidate the dynamics underlying these differential effects for a color and a spatial variant of the Simon task. In the color version there was no sign of early response priming by irrelevant stimulus features in the LRP. The color compatibility effect was independent of task overlap and reflected in the LRP onset latency. In contrast, in the spatial version, priming by irrelevant stimulus location showed up and was mirrored by early LRP activation. Response priming and the corresponding Simon effect, however, were present only in case of little temporal overlap with the primary task. The absence of spatial compatibility effects at strong temporal overlap suggests that response conflicts due to stimulus-related priming depend on the availability of processing resources.     

Do hostile attribution biases in children and parents predict relationally aggressive behavior?

Relatively little is understood about the role of hostile attributions in children's use of relational aggression with peers, or about the impact of family processes on children's attributions about ambiguous provocations. This cross-sectional study investigated associations among hostile attributions made by children, mothers, and fathers, and children's use of relational aggression with peers. The sample included 91 children in Grades 3-5 (43 girls), and their mothers (n = 90) and teachers (n = 88). Fathers also participated for a subsample of children (n = 53). Results showed that relational aggression is associated with a hostile attribution bias in children and parents, although findings varied as a function of gender of parent and child, provocation type, and informant of aggression. Overall, mothers' attributions were more closely related to daughters' attributions and aggressive behavior than to sons'. Implications of these findings for social information processing models and family-focused prevention of relational aggression are discussed.     

Steigerung des ?empowerment“ bei Angeh?rigen von schizophren Erkrankten

Objective

Enhancing empowerment is one of the aims of psychoeducational family interventions but it has never been examined in psychoeducational groups for relatives led by professionals. This study investigated the knowledge gain and the increase of empowerment of psychoeducational group programs for relatives in a naturalistic setting.

Methods

A total of 54 relatives of persons with schizophrenia or schizoaffective disorders took part in a psychoeducational group program of 8 sessions. A short questionnaire was used to assess the empowerment before and after the group programs. Knowledge gain was measured with the knowledge of illness about schizophrenia questionnaire (WFB).

Results

Among the participants of the psychoeducational groups the level of empowerment was significantly enhanced and the knowledge was significantly increased (p?<?0.01). The improvement of empowerment was independent of the knowledge gain and did not correlate with gender, age, education or group attendance.

Conclusions

Psychoeducational groups for family members not only reduce the rehospitalization rates of the ill relatives but also have additional positive effects on the family members themselves: better knowledge of the illness and enhanced empowerment. The findings emphasize the importance of psychoeducational groups for the relatives of persons with schizophrenia.     

Kausalgesetz und Quantenmechanik

Ohne Zusammenfassung     

What colour is the car? Implicit memory for colour information in children

Three experiments were conducted to examine age-related differences in colour memory. In Experiment 1, preschool age and elementary school age children were given a conceptual test of implicit colour memory (a colour-choice task). They were presented with the names or achromatic versions of previously studied coloured line drawings and asked to select an appropriate colour. Significant priming could be demonstrated: The children chose the previously seen colours more often than was expected by chance. Equivalent priming was found for both versions (pictorial and verbal) suggesting that colour priming may be conceptually mediated. Moreover, colour priming proved to be age invariant. Experiment 2 replicated and extended this finding by using a wider age group (preschool, elementary school, and young adults) and by giving a perceptual implicit task (picture identification) in addition to a verbal colour-choice task. Colour did not affect priming in the perceptual task. Whereas priming showed no developmental change, agerelated improvements were observed on an explicit colour memory task that differed only in the test instructions from the implicit colour-choice task (Experiments 2 and 3). Taken together, the results suggest that implicit colour memory may be mediated by conceptual processes that are age invariant.