The heterogeneity of picture-supported narratives in Alzheimer's disease

This study describes discourse patterns produced by 46 Alzheimer disease (AD) patients and 53 normal elderly subjects in two picture-supported narratives. Nine measures derived from a cognitive model of discourse processing were obtained and submitted to cluster analysis. Results indicate that discourse patterns elicited from both stimuli were heterogeneous. Further, they fail to clearly differentiate between normal aging and AD in half of the AD patients. Discourse patterns are examined in light of various sources of heterogeneity including severity of cognitive impairment, subject characteristics, and task demands. The usefulness of discourse as a diagnostic and therapeutic tool is discussed.     

Auditory ERP in extremely premature 5-year-old children

The aim of this research was to test the hypothesis of a functional impairment in the automatic detection of deviant tones in 141 children born after 25 to 28 weeks of gestational age, as compared to 45 age-matched full-term control children. All of them were assessed at age 5 years 9 months and instructed to listen passively to two different pure tones (1000 vs 1200 Hz; 20 vs 80%) counterbalanced between ears. Rarity was thus defined by specific ear by tone combinations. The temporal N100 showed a clear contralateral functional organization of the central auditory pathway, especially for the left ear, but without group difference. By contrast, in full-term controls but not in premature children, the central N200 was specifically increased over frontal leads to rare stimuli as compared to frequent. Premature children demonstrated a lack of brain response when more complex processing integrating different informations was required.     

Establishing the experimenting society: the historical origin of social experimentation according to the randomized controlled design.

This article traces the historical origin of social experimentation. It highlights the central role of psychology in establishing the randomized controlled design and its quasi-experimental derivatives. The author investigates the differences in the 19th- and 20th-century meaning of the expression "social experiment." She rejects the image of neutrality of social experimentation, arguing that its 20th-century advocates promoted specific representations of cognitive competence and moral trustworthiness. More specifically, she demonstrates that the randomized controlled experiment and its quasi-experimental derivatives epitomize the values of efficiency and impersonality characteristic of the liberal variation of the 20th-century welfare state.     

Hot or not: visceral influences on coping planning for weight loss attempts

The current studies aimed to examine how either or not being hungry (hot vs. cold state) affects uninformed (i.e. without specific instructions) coping planning for maintaining goal-directed behaviour in weight loss attempts. We hypothesised that being hungry is beneficial both for (1) increasing awareness of potentially challenging situations and for (2) planning how to cope with these situations. The first hypothesis was supported, whereas the second was not, as it was found that satiated participants constructed better quality coping plans than hungry participants. It appears that awareness of potentially challenging situations when hungry does not necessarily translate into better coping planning. Although coping planning appears to be a promising strategy for maintaining goal-directed behaviour, future research should focus on visceral states to improve its use.     

Syntactic processing in bilinguals: an fNIRS study

The study of the neural basis of syntactic processing has greatly benefited from neuroimaging techniques. Research on syntactic processing in bilinguals has used a variety of techniques, including mainly functional magnetic resonance imaging (fMRI) and event-related potentials (ERP). This paper reports on a functional near-infrared spectroscopy (fNIRS) study on syntactic processing in highly proficient young adult speakers of Portuguese (mother tongue) (L1) and French (second language) (L2). They made a syntactic judgment of visually presented sentences, which either did or did not contain noun-verb agreement violations. The results showed that syntactic processing in both languages resulted in significant activation in anterior frontal regions of the left hemisphere and in the temporal superior posterior areas of the right hemisphere, with a more prominent activation for L2 in some areas. These findings corroborate previously reported neuroimaging evidence, showing the suitability of fNIRS for the study of syntactic processing in the bilingual brain.     

EXAMINING THE USE OF PHOTO ESSAYS ON STUDENTS’ WRITING ABILITY

This study examined the use of a visual approach as an organizing framework for the planning and execution for the writing of various discourse styles. Low literacy achievement students in 6th and 7th grade showed increased competence in different writing styles when they planned, photographed, and “story‐boarded” photo essays as compared to situations when they merely wrote on assigned topics. Analysis for the 69 students in this study was done by repeated measures design. Three raters evaluated students’ compositions using the Diederich Rating Scale. There were consistent findings of nonsignificant main effects, while there were significant interactions of writing scores with time of treatment for the areas of content, mechanics, and total composition score