Sleep Disorders and Cognitive Dysfunctions in Parkinson’s Disease: A Meta-Analytic Study

Neuropsychology Review - A relationship between sleep disorders and cognitive dysfunctions was reported in Parkinson’s Disease (PD), however, some studies did not confirm the link. A...     

Direct and indirect intergroup friendship effects: testing the moderating role of the affective-cognitive bases of prejudice

Direct friendship with outgroup members and the knowledge of ingroup-outgroup friendships (indirect friendship) can both reduce outgroup prejudice. Three correlational studies (Ns = 338, 141, and 798) tested the moderating role of the affective-cognitive bases of prejudice, assessing whether the size of the friendship- prejudice relationship depends on the extent to which emotions (vs. thoughts) are relevant to the prejudiced attitudes at stake. In Study 1, direct friendship effects were larger with outgroups generating stronger affective responding than with outgroups generating stronger cognitive responding, whereas indirect friendship effects were larger with cognitive than with affective outgroups. Study 2 detected a similar pattern but with prejudice basis assessed in terms of individual differences. Study 3 replicated Study 2's indirect friendship-cognitive basis moderation in a context of historically polarized intergroup relations and on two new outcome variables, intergroup trust and negative action tendencies.     

Postdecisional counterfactual thinking by actors and readers

How do individuals think counterfactually about the outcomes of their decisions? Most previous studies have investigated how readers think about fictional stories, rather than how actors think about events they have actually experienced. We assumed that differences in individuals' roles (actor vs. reader) can make different information available, which in turn can affect counterfactual thinking. Hence, we predicted an effect of role on postdecisional counterfactual thinking. Reporting the results of eight studies, we show that readers undo the negative outcome of a story by undoing the protagonist's choice to tackle a given problem, rather than the protagonist's unsuccessful attempt to solve it. But actors who make the same choice and experience the same negative outcome as the protagonist undo this outcome by altering features of the problem. We also show that this effect does not depend on motivational factors. These results contradict current accounts of counterfactual thinking and demonstrate the necessity of investigating the counterfactual thoughts of individuals in varied roles.     

Accountability moderates member-to-group generalization: Testing a dual process model of stereotype change

According to contemporary models of accountability [Lerner, J.S., & Tetlock, P.E. (1999). Accounting for the effects of accountability. Psychological Bulletin, 125, 255-275], when individuals are warned that they will be held accountable for their decisions, both information processing and judgment vigilance increase. We used an established generalization paradigm [Garcia-Marques, L., & Mackie, D.M. (1999). The impact of stereotype incongruent information on perceived group variability and stereotype change. Journal of Personality and Social Psychology, 77, 979-990] to extend the application of these principles to the process of member-to-group generalization in stereotype change. As predicted, across the three studies (Ns = 60, 78, and 101), accountability was found to amplify generalization under control conditions, both when the member information was stereotypical (Experiment 1) and counterstereotypical (Experiments 2 and 3). Accountability was found to attenuate generalization (Experiments 2 and 3) when a meta-judgmental cue discredited the validity of the member information for the group judgment. Ancillary evidence from Experiments 2 and 3 suggests a mediational role for the cognitive fencing-off of the member information from the group schema. The implications of the observed interplay between stereotyping and meta-cognitions for theory and policy are discussed.     

News Reports of Catastrophes and Viewers' Fear: Threat Appraisal of Positively Versus Negatively Framed Events

Although research has shown that media coverage of traumatic events can evoke intense fear in spectators, few studies have examined the mechanisms underlying this effect. Drawing from appraisal theories, this article investigates whether viewers' fear responses to traumatic reports are mediated by the appraisal of personal relevance, as well as whether positive framing of news stories is capable of dampening fear. In a 2 × 2 between-subjects design, participants watched one of two reports about mutilations caused by either an event with high signal potential (bacterial infection) or an event with low signal potential (explosion of land mines). Each of the reports could be either positively or negatively framed. Participants were asked to report their emotions in response to the news story and to answer questions concerning their cognitive appraisal. Results showed that the report with mutilations caused by bacterial infection elicited more fear than the report with mutilations caused by land mine explosions. This effect was mediated by the dimensions of suddenness, unpleasantness, personal relevance, and coping potential. Positively framed reports generated less fear than negatively framed reports, and this effect was mediated by the dimensions of coping potential and unpleasantness. The implications for media research are discussed.     

GOOD or BAD responder? Behavioural and neuroanatomical markers of clinical response to donepezil in dementia

We explored the neuropsychological and neuromorphometrical differences between probable Alzheimer's disease patients showing a good or a bad response to nine months treatment with donepezil. Before treatment, the neuropsychological profile of the two patient groups was perfectly matched. By the ninth month after treatment, the BAD-responders showed a decline of the MMSE score together with a progressive impairment of executive functions. A voxel-based morphometry investigation (VBM), at the time of the second neuropsychological assessment, showed that the BAD-responders had larger grey and white matter atrophies involving the substantia innominata of Meynert bilaterally, the ventral part of caudate nuclei and the left uncinate fasciculus, brain areas belonging to the cholinergic pathways. A more widespread degeneration of the central cholinergic pathways may explain the lack of donepezil efficacy in those patients not responding to a treatment that operates on the grounds that some degree of endogeneous release of acetylcholine is still available.     

Infants' individuation of agents and inert objects

Using the violation-of-expectancy method, we investigated 10-month-old infants' ability to rely on dynamic features in object individuation processes. Infants were first familiarized to events in which two different objects repeatedly appeared and disappeared, one at a time from behind a screen; at test, the screen was removed, revealing either one or two objects. In Experiment 1, one self-moving non-rigid agent and one inert object were involved in each trial, while in Experiment 2 two different agents were presented. Infants preferred to look at one-object outcomes in Experiment 1, but they did not show any preference for one- or two-object outcomes in Experiment 2. The results suggest that infants can use dynamic information to detect agents in complex individuation tasks before they can rely on shape or surface features. We propose that the sortals agent and inert object appear in development before 12 months without a substantial contribution of linguistic experience. These findings may motivate a revision of current theories on the development of kind-based individuation and object files.     

Eye movements disrupt episodic future thinking

Remembering the past and imagining the future both rely on complex mental imagery. We considered the possibility that constructing a future scene might tap a component of mental imagery that is not as critical for remembering past scenes. Whereas visual imagery plays an important role in remembering the past, we predicted that spatial imagery plays a crucial role in imagining the future. For the purpose of teasing apart the different components underpinning scene construction in the two experiences of recalling episodic memories and shaping novel future events, we used a paradigm that might selectively affect one of these components (i.e., the spatial). Participants performed concurrent eye movements while remembering the past and imagining the future. These concurrent eye movements selectively interfere with spatial imagery, while sparing visual imagery. Eye movements prevented participants from imagining complex and detailed future scenes, but had no comparable effect on the recollection of past scenes. Similarities between remembering the past and imagining the future are coupled with some differences. The present findings uncover another fundamental divergence between the two processes.     

The role of emotion knowledge in the links between shyness and children's socio‐emotional functioning at preschool

The present study investigated the potential protective role of components of emotion knowledge (i.e., emotion recognition, situation knowledge) in the links between young children's shyness and indices of socio‐emotional functioning. Participants were n = 163 children (82 boys and 81 girls) aged 23–77 months (M = 53.29, SD = 14.48), recruited from preschools in Italy. Parents provided ratings of child shyness and teachers rated children's socio‐emotional functioning at preschool (i.e., social competence, anxiety‐withdrawal, peer rejection). Children were also interviewed to assess their abilities to recognize facial emotional expressions and identify situations that affect emotions. Among the results, shyness was positively related to anxiety‐withdrawal and peer rejection. In addition, emotion recognition was found to significantly moderate the links between shyness and preschool socio‐emotional functioning, appearing to serve a buffering role. For example, at lower levels of emotion recognition, shyness was positively associated with both anxiety‐withdrawal and rejection by peers, but at higher levels of emotion recognition, these associations were attenuated. Results are discussed in terms of the protective role of emotion recognition in promoting shy children's positive socio‐emotional functioning within the classroom context.     

Uncovering the diverse cultural bases of social identity: Ingroup ties predict self‐stereotyping among individualists but not among collectivists

On what basis do people form their social identities? To investigate this issue, the present research investigates cross‐cultural differences in self‐stereotyping, a key outcome of social identification. In particular, the research tests the hypothesis that ingroup ties are a stronger predictor of self‐stereotyping among people from individualist cultures than among people from collectivist cultures. In Study 1, university students (N = 117) completed measures of ingroup ties and self‐stereotyping with respect to an intimacy group (family and friends). Consistent with predictions, ingroup ties significantly predicted self‐stereotyping among individualists but not among collectivists. Study 2 (N = 104) found a similar pattern of results among members of the global internet community who considered either an intimacy group (their friends), a task group (their work group) or a social category (their gender). These results indicate that people in individualist cultures are more likely than those in collectivist cultures to base their social identities on ingroup ties. The implications of these results are discussed in relation to self‐categorization theory's depersonalization account of social identification.