Effects of alcohol sensitivity on P3 event-related potential reactivity to alcohol cues.

Although alcoholics and individuals at risk for alcoholism often show smaller amplitude of the P3 event-related brain potential (ERP), recent data (K. Namkoong, E. Lee, C. H. Lee, B. O. Lee, & S. K. An, 2004) indicate that alcohol-related cues elicit larger P3 amplitude in alcoholics than in controls. Little is known concerning the ERP profiles or alcohol cue reactivity of social drinkers at risk for alcoholism due to low sensitivity to alcohol's effects. Participants differing in alcohol sensitivity viewed images of alcoholic and nonalcoholic beverages while ERPs were recorded and provided information about their alcohol use patterns at baseline and 4 months later. Compared to high-sensitivity participants, those low in sensitivity showed larger P3s to alcohol cues, even when recent alcohol use was statistically controlled for. Moreover, the P3 elicited by alcohol cues predicted alcohol use at follow-up, a finding supporting the idea that P3 amplitude reflects the motivational significance of substance-related cues. These findings point to risk status, not consumption history, as an important predictor of cue reactivity effects.     

Expectation of a final cumulative test enhances long-term retention

In the present study, subjects studied lists of words across four experimental conditions: whether (or not) subjects received initial testing for these lists and whether (or not) they were made aware of an upcoming final free-recall test. Initial testing enhanced final-test performance; however, subjects benefited more from initial testing when they also knew they would need to remember the information for a later test. The data suggest that holding an expectation of the final test encouraged the continued processing of study materials following an initial test, affecting the accessibility of these materials at the time of final recall. The results clearly illustrate how an expectation of a cumulative test might influence long-term retention, which may have important implications for educational practice.     

Why stereotypes don't even make good defaults

Many concepts have stereotypes. This leaves open the question of whether concepts are stereotypes. It has been argued elsewhere that theories that identify concepts with their stereotypes or with stereotypical properties of their instances (e.g., Rosch, E. (1978). Principles of categorization. In E. Rosch & B. B. Lloyd (Ed.), Cognition and Categorization. Hillsdale, NJ: Lawrence Erlbaum Associates; Smith, E. E., Medin, D. L. (1981). Categories and Concepts. Cambridge, MA: Harvard University Press.) fail to provide an adequate account of the compositionality of concepts (Fodor, J., Lepore, E. (1996). The red herring and the pet fish: Why concepts still cannot be prototypes. Cognition, 58, 253-270.; Fodor, J. (1998). Concepts: Where cognitive science went wrong. New York, NY: Oxford University Press.). This paper extends this argument and reports an experiment suggesting that participants do not assume, even as a default strategy, that complex concepts inherit the stereotypes of their constituents. Thus propositions such as "Baby ducks have webbed feet" were judged to be less likely to be true than propositions like "Ducks have webbed feet." Moreover, manipulation of the type and number of noun phrase modifiers revealed a systematic departure from the unmodified noun's stereotype both with the addition of stereotypical modifiers ("Quacking ducks have webbed feet" versus "Ducks have webbed feet") and with the addition of a second modifier ("Baby Peruvian ducks have webbed feet" versus "Baby ducks have webbed feet"). Thus, in the general case the stereotypical properties of a head noun are systematically discounted when that head noun combines with modifiers. This effect represents a general principle of conceptual combination that argues against the inheritance of stereotypical features of concepts as a default strategy. Instead, we advocate a model of conceptual combination where concepts remain inert under combination, supported by a separate machinery that introduces pragmatic and knowledge-dependent inferences.     

Treatment of self-restraint associated with the application of protective equipment

The current investigation assessed the effectiveness of protective equipment, specifically arm splints, in reducing the occurrence of severe self-injurious behavior (SIB). Although the protective equipment reduced rates of SIB to near-zero levels, self-restraint subsequently emerged. In an attempt to reduce self-restraint while maintaining reductions in SIB, we provided noncontingent access to preferred stimuli. The presentation of preferred stimuli along with the use of protective equipment reduced both the rate of SIB and the duration of self-restraint.     

书法负荷对儿童大脑的激活效应的实验研究

该研究以儿童为被试探讨了书法负荷和非书法负荷(书写、计算、英文书写)前后反应时的变化情况,结果发现,(1)书法负荷后反应时明显缩短;(2)书写负荷后反应时的变化与书法负荷后相同;(3)计算负荷和英文书写负荷后未见反应时有明显缩短。     

Beyond ‘Liberals’ and ‘Conservatives’: Complexity in Ideology,Moral Intuitions,and Worldview Among Swedish Voters

This research investigated the congruence between the ideologies of political parties and the ideological preferences (N = 1515), moral intuitions (N = 1048), and political values and worldviews (N = 1345) of diverse samples of Swedish adults who voted or intended to vote for the parties. Logistic regression analyses yielded support for a series of hypotheses about variations in ideology beyond the left–right division. With respect to social ideology, resistance to change and binding moral intuitions predicted stronger preference for a social democratic (vs. progressive) party on the left and weaker preference for a social liberal (vs. social conservative or liberal-conservative) party on the right. With respect to political values and broader worldviews, normativism and low acceptance of immigrants predicted the strongest preference for a nationalist party, while environmentalism predicted the strongest preference for a green party. The effects were generally strong and robust when we controlled for left–right self-placements, economic ideology, and demographic characteristics. These results show that personality variation in the ideological domain is not reducible to the simplistic contrast between ‘liberals’ and ‘conservatives’, which ignores differences between progressive and non-progressive leftists, economic and green progressives, social liberal and conservative rightists, and nationalist and non-nationalist conservatives.     

Attachment & Child Health (ATTACH) pilot trials: Effect of parental reflective function intervention for families affected by toxic stress

Toxic stressors (e.g., parental violence, depression, low income) place children at risk for insecure attachment. Parental reflective function—parents’ capacity to understand their own and their child's mental states and thus regulate their own feelings and behavior toward their child—may buffer the negative effects of toxic stress on attachment. Our objective was to test the effectiveness of the Attachment and Child Health (ATTACH) intervention, focusing on improving reflective function and children's attachment security, for at-risk mothers and children <36 months of age. Three pilot studies were conducted with women and children from an inner city agency serving vulnerable, low-income families and a family violence shelter. Randomized control trial (n = 20, n = 10 at enrollment) and quasi-experimental (n = 10 at enrollment) methods tested the effect of the ATTACH intervention on the primary outcome of reflective function scores, from transcribed Parent Development Interviews. Our secondary outcome was children's attachment patterns from Ainsworth's Strange Situation Procedure. Despite some attrition, mixed methods analysis of covariance and t tests revealed significant differences in maternal, child, and overall reflective function, with moderate effect sizes. While more children whose mothers received the ATTACH program were securely attached posttreatment, as compared with controls, significant differences were not observed, which may be due to missing observations (n = 5 cases). Understanding the effectiveness of programs like the ATTACH intervention contributes to improved programs and services to promote healthy development of children affected by toxic stress.