Parkinson’s disease disrupts both automatic and controlled processing of action verbs

The problem of how word meaning is processed in the brain has been a topic of intense investigation in cognitive neuroscience. While considerable correlational evidence exists for the involvement of sensory-motor systems in conceptual processing, it is still unclear whether they play a causal role. We investigated this issue by comparing the performance of patients with Parkinson’s disease (PD) with that of age-matched controls when processing action and abstract verbs. To examine the effects of task demands, we used tasks in which semantic demands were either implicit (lexical decision and priming) or explicit (semantic similarity judgment). In both tasks, PD patients’ performance was selectively impaired for action verbs (relative to controls), indicating that the motor system plays a more central role in the processing of action verbs than in the processing of abstract verbs. These results argue for a causal role of sensory-motor systems in semantic processing.     

Measurement of External Shame: An Inside View

The aims of this study were to investigate the construct validity of the Other as Shamer scale (OAS) using confirmatory factor analysis (CFA) and to examine the psychometric properties of its Italian version in a sample of 687 nonclinical individuals. The CFA results indicated that the hypothesized hierarchical model (with 1 higher order factor and 3 first-order factors) was the best fitting solution. Cronbach's alpha indexes, as well as test–retest stability, provided satisfactory results. Correlations of the OAS total score and its subscales with the Beck Depression Inventory–II (rs = .30–.48) and the Teate Depression Inventory (rs = .32–.45) were both substantial and significant (p < .01). Receiver operating characteristic curves were constructed to indicate sensitivity and specificity of the OAS and its subscales when determining those nonclinical subjects who met clinical thresholds for depression symptoms. A series of cutoff scores for the OAS scale and its subscales was developed, with sensitivity values between .70 and .62, and specificity values between .71 and .62, indicating good to fair discrimination between the 2 groups (depressed vs. nondepressed). The theoretical and practical implications of these results were discussed.     

Interpretation and the Problem of Domination: Paul Ricoeur's Hermeneutics

Hermeneutics, or the science of interpretation,is well accepted in the humanities. In thefield of education, hermeneutics has played arelatively marginal role in research. It isthe task of this essay to introduce thegeneral methods and findings of Paul Ricoeur'shermeneutics. Specifically, the essayinterprets the usefulness of Ricoeur'sphilosophy in the study of domination. Theproblem of domination has been a target ofanalysis for critical pedagogy since itsinception. However, the role of interpretationas a constitutive part of ideology critique isrelatively understudied and it is here thatRicoeur's ideas are instructive. Last, theessay radicalizes Ricoeur's insights in orderto realize their potential to disruptasymmetrical relations of power in education. To this extent, the author contributes to thebuilding of a critical brand of hermeneutics,or the interpretation of domination.     

Re‐examination of Oostenbroek et al. (2016): evidence for neonatal imitation of tongue protrusion

The meaning, mechanism, and function of imitation in early infancy have been actively discussed since Meltzoff and Moore's (1977) report of facial and manual imitation by human neonates. Oostenbroek et al. (2016) claim to challenge the existence of early imitation and to counter all interpretations so far offered. Such claims, if true, would have implications for theories of social‐cognitive development. Here we identify 11 flaws in Oostenbroek et al.'s experimental design that biased the results toward null effects. We requested and obtained the authors’ raw data. Contrary to the authors’ conclusions, new analyses reveal significant tongue‐protrusion imitation at all four ages tested (1, 3, 6, and 9 weeks old). We explain how the authors missed this pattern and offer five recommendations for designing future experiments. Infant imitation raises fundamental issues about action representation, social learning, and brain–behavior relations. The debate about the origins and development of imitation reflects its importance to theories of developmental science.     

Action observation network in childhood: a comparative fMRI study with adults

Very little is known about the action observation network and the mirror neuron system (AON/MNS) in children and its age‐related properties compared with those observed in adults. In the present fMRI study we explored the activation of areas belonging to the AON/MNS in children and adults during observation of complex hand‐grasping actions, as compared to observation of simple grasping acts executed with the left and the right hand, seen from a first person perspective. The results indicate that during the action observation tasks in children there was activation of a cortical network similar to that found in adults, including the premotor cortex, the posterior part of the inferior frontal gyrus and the posterior parietal lobe. However, the activation in children was more widespread and showed a higher inter‐subject variability compared with adults. Furthermore, the activated network seems more lateralized to the left hemisphere in adults and more bilateral in children, with a linear growth of lateralization index as a function of age. Finally, in children the activation in the anterior intraparietal cortex (AIP) of each hemisphere was higher during observation of the contralateral hand (hand identity effect) and during the observation of complex actions relative to simple grasping acts, confirming the role of AIP for action‐related hand identity previously described in adults. These results support the assumption that structure and size of action representations are sensitive to mechanisms of development and show physiological plasticity. These properties of the AON/MNS could constitute a powerful tool for spontaneous reorganization and recovery of motor deficits after brain injury in children and in adults, as well as for specific rehabilitation programmes.     

When repetitive consumption leads to predictions of faster adaptation

Hedonic adaptation can explain why individuals enjoy their products less over time. One key feature of hedonic adaptation is its dependence on consumption repetition. Our research investigates when the perception of repetitive consumption leads consumers to predict faster hedonic adaptation (i.e., less enjoyment). We conducted four studies testing the impact of repetition on predicted enjoyment (Studies 1A and 1B), the interaction between repetition and assortment variety (Study 2), and the interaction between repetition and attention drawn by the product (Study 3). Results show that repetition leads consumers to predict less future enjoyment, weakens the effect of assortment variety on hedonic adaptation prediction, and strengthens the effect of attention drawn by product on hedonic adaptation prediction. Our results also show that consumers who predict less future enjoyment with a product are less likely to purchase this product. Overall, the findings advance knowledge on hedonic adaptation by presenting the impact of the most relevant feature of hedonic adaptation (i.e., consumption repetition) when it is made salient for consumers, and its interaction with common contextual cues.