Pictorial and lexical priming: Patterns of implicit memory in Alzheimer's and Parkinson's disease patients

Lexical and pictorial priming were examined in patients with Alzheimer's disease and in demented and nondemented patients with Parkinson's disease. Control subjects were divided into young and elderly. Lexical priming used a word‐stem completion task. Pictorial priming task was based on Rey's superimposed pictures test. Elderly normal subjects demonstrated lower lexical priming scores than those of young subjects. Analysis of covariance with age and educational level as covariates showed that normal controls, demented and nondemented Parkinsonian patients, and Alzheimer patients did not differ significantly on the lexical priming task. Pictorial priming scores did not differ significantly between elderly and younger controls. In contrast there was a striking impairment of pictorial priming in Parkinsonian patients, both demented and nondemented. Performance of subjects with mild Alzheimer's disease was superior to that of nondemented Parkinsonian patients. Our results suggest that performance in lexical priming task diminishes with physiological ageing but is unaffected by mild or moderate Alzheimer's disease. Our study also observes the existence of a selective pictorial priming deficit in Parkinson's disease; however, this deficit is not specific, as it is also observed to a lesser degree in Alzheimer's disease. It may therefore be concluded that the systems serving pictorial priming are both cortical and subcortical.     

Self-Control Depletion Does Not Diminish Attitudes About Being Prosocial But Does Diminish Prosocial Behaviors

In three studies, ego-depleted participants reported the same level of affective/cognitive concern for others as control participants, but behaved less prosocially. In Study 1, participants had to sustain cooperation to increase the joint payout to themselves and another player. In Study 2, participants had to restrict their use of a shared resource. In Study 3, ego-depletion failed to produce effects on several measures of concern for others despite large effects found with other manipulations. Results suggest ego-depletion influences behavior by reducing one's ability or motivation to overcome egotistic desires when helping others comes at a cost to the self.     

Developmental dissociation of visual dorsal stream parvo and magnocellular representations and the functional impact of negative retinotopic BOLD responses

Localized neurodevelopmental defects provide an opportunity to study structure–function correlations in the human nervous system. This unique multimodal case report of epileptogenic dysplasia in the visual cortex allowed exploring visual function across distinct pathways in retinotopic regions and the dorsal stream, in relation to fMRI retinotopic mapping and spike triggered BOLD responses.     

Construction Of Reality Or Dependent Origination? From Scientific Psychotherapy To Responsible Attention

The term ‘postmodernism’ has carved itself a niche in everyday, and specialised, vocabulary. We understand it as being the new mentality that emerges from the critique of modernity. This transformation, which has been underway since the second half of the twentieth century, undermines the foremost myth of the modern world, that we can discover an objective and stable truth, that is to say independent and lasting. This change is affecting all areas of human knowledge, from philosophy to physics, as well as human practices and experiences. Its origins are to be found in the theories that label themselves critical, starting with Marxism and existentialism, and in further developments such as hermeneutics, symbolic interactionism, post-structuralism, ethnomethodology, deconstructionism, and others. In this article we wish to recover one of the principal ideas of this change of mentality, the idea of ‘construction of reality’ and contrast it with ‘dependent origination’ (Paticcasamuppada) characteristic of the Dharma, a system of liberation from suffering synthesised by Buddha. We are interested in this relationship in the specific field of Psychotherapy, or in the broader field of Integral Psychology. To this end, firstly we inquire how constructivism has made a space for itself in the scientific world; we then address the constructivist features of the Dharma.     

When Choices Are Not Personal: The Effect of Statistical and Social Cues on Children's Inferences About the Scope of Preferences

Individual choices are commonly taken to manifest personal preferences. The present study investigated whether social and statistical cues influence young children's inferences about the generalizability of preferences. Preschoolers were exposed to either 1 or 2 demonstrators’ selections of objects. The selected objects constituted 18%, 50%, or 100% of all available objects. We found that children took a single demonstrator's choices as indicative only of his or her personal preference. However, when 2 demonstrators made the same selection, then children inferred that it generalized to other agents of the same kind as the original demonstrator's, but not to agents of a different kind. Lastly, only when both demonstrators blatantly violated random selection (i.e., in the 18% condition) did children generalize the preference even to an agent of a different kind. Thus, from a young age, social and statistical cues inform children's naïve sociology.     

Los modelos del proceso de la escritura

Resumen

El presente articulo trata de ofrecer una visión general de cuál es el estado en que se encuentran las teorías sobre el proceso de escritura. Para ello se expone, en primer lugar, cuál ha sido la evolución de los supuestos que subyacen a los modelos de escritura, modelos que pueden clasificarse en tres grandes grupos: los modelos de traducción, los modelos de etapas y los actuales modelos cognitivos. En segundo lugar, se señalan algunos factores que han contribuido a la aparición de estos últimos, así como algunos de sus objetivos y requisitos. A continuación se expone el modelo de Flower y Hayes (1979, 1980, 1981 a y b) como un ejemplo prototípico de esta orientación. Por último, se ofrecen una serie de conclusiones respecto a la evolución de los modelos, respecto a las características comunes generales que comparten los modelos cognitivos y respecto a las tendencias actuales en la construcción de dichas teorías.     

Understanding and Integrating Multiple Science Texts: Summary Tasks are Sometimes Better Than Argument Tasks

One of the major challenges of a knowledge society is that students as well as other citizens must learn to understand and integrate information from multiple textual sources. Still, task and reader characteristics that may facilitate or constrain such intertextual processes are not well understood by researchers. In this study, we compare the effects of summary and argument essay tasks when undergraduates read seven different texts on a particular scientific topic, finding that an instruction to write summaries may lead to better understanding and integration than an instruction to write argument essays. We discuss several possible explanations for this result. We also found that beliefs about the certainty of knowledge in some instances can moderate the effect of task on comprehension performance.     

Effects of task interdependence and communication technologies synchrony on performance in virtual teams

Effects of task interdependence and communication technologies synchrony on performance in virtual teams. Survey results of 197 employees from 41 work groups in a large multinational software firm were used to investigate the effects of within-group task interdependence and the degree of communication synchrony on performance in virtual teams (VTs). The analyses revealed a moderating effect of task interdependence on the relationship between the degree of communications synchrony and performance in VT. We found that superior VTs performance is contingent on the fit between the nature of the task (i.e., task interdependence) and the choice of communications modality. This study complements previous research providing additional evidence of how task-technology interaction affects VTs performance, and extends previous findings obtained with ad-hoc groups in laboratory settings to natural, organizational teams.     

Processing of basic speech acts following localized brain damage: a new light on the neuroanatomy of language

We examined the effect of localized brain lesions on processing of the basic speech acts (BSAs) of question, assertion, request, and command. Both left and right cerebral damage produced significant deficits relative to normal controls, and left brain damaged patients performed worse than patients with right-sided lesions. This finding argues against the common conjecture that the right hemisphere of most right-handers plays a dominant role in natural language pragmatics. In right-hemisphere damaged patients, there was no correlation between location and extent of lesion in perisylvian cortex and performance on BSAs. By contrast, processing of the different BSAs by left hemisphere-damaged patients was strongly affected by perisylvian lesion location, with each BSA showing a distinct pattern of localization. This finding raises the possibility that the classical left perisylvian localization of language functions, as measured by clinical aphasia batteries, partly reflects the localization of the BSAs required to perform these functions.     

Cooperation In Group Treatment Programs for Incarcerated Adolescents1

Group treatment programs for incarcerated adolescents attempt to use the social influence of peer groups as a means both for generating acceptance of treatment goals and for creating pro-social change. On the basis of social psychological research in laboratory and educational settings, we predicted that group cooperation plays a pivotal role in these programs. A hypothesized path model was estimated through pooled time series and cross section analysis of three waves of data for 45 groups at four institutions. There was close agreement between path estimates from an analysis of average levels and an analysis of change, and both strongly supported the hypothesized model. Results indicate that coercive control decreases cooperation and that cooperation leads to attraction to the group and prevents delinquent norms. Cooperation also has an indirect effect on acceptance of the program, mediated by attraction to the group.