Search results for "Decision Making"
showing 10 items of 492 documents
Conceptual proposition selection and the LIFG: neuropsychological evidence from a focal frontal group.
2010
Much debate surrounds the role of the left inferior frontal gyrus (LIFG). Evidence from lesion and neuroimaging studies suggests the LIFG supports a selection mechanism used in single word generation. Single case studies of dynamic aphasic patients with LIFG damage concur with this and extend the finding to selection of sentences at the conceptual preparation stage of language generation. A neuropsychological group with unselected focal frontal and non-frontal lesions is assessed on a sentence generation task that varied the number of possible conceptual propositions available for selection. Frontal patients with LIFG damage when compared to Frontal patients without LIFG damage and Posterio…
Roles of participation and feedback in group potency.
2009
The roles of group participation and group performance feedback were examined as antecedents of group potency, i.e., beliefs shared among a work group's members about the general effectiveness of the work group. Also examined were how group participation and the congruence of the feedback received from different sources about performance predicted convergence in members' beliefs about group effectiveness. The sample comprised 61 work groups of professionals involved in Master in Business Administration (MBA) programs (284 participants). Mean group size was 4.6 members ( SD = .58). 65% of participants were male, and 51% were between 30 and 40 years of age. Data were gathered at two measurem…
Preliminary organizational culture scale focused on artifacts
2006
In this preliminary study, an organizational culture scale was developed to assess cultural artifacts according to Schein´s typology (1985). It includes a set of cultural artifacts to measure the extent to which an organization is more or less traditional. A total of 249 managers from a range of different companies responded to the items. Preliminary analysis yielded a one-dimensional scale with 14 items with high internal consistency and homogeneity.
The concept of a surrogate is ill adapted to intensive care: Criteria for recognizing a reference person
2016
IF 2.445; International audience; Purpose: In the intensive care unit (ICU), caregivers may find it difficult to identify a suitable person in the patient's entourage to serve as a reference when there is no official surrogate.Methods: We developed a 12-item questionnaire to identify factors potentially important for caregivers when identifying a reference person. Each criterion was evaluated as regards its importance for the role of reference. Responses were on a scale of 0 (not important) to 10 (extremely important). We recorded respondent's age, job title, and number of years' ICU experience. The questionnaire was distributed to all health care professionals in 2 French ICUs.Results: Amo…
Neural Correlates of Visual versus Abstract Letter Processing in Roman and Arabic Scripts
2013
In alphabetic orthographies, letter identification is a critical process during the recognition of visually presented words. In the present experiment, we examined whether and when visual form influences letter processing in two very distinct alphabets (Roman and Arabic). Disentangling visual versus abstract letter representations was possible because letters in the Roman alphabet may look visually similar/dissimilar in lowercase and uppercase forms (e.g., c-C vs. r-R) and letters in the Arabic alphabet may look visually similar/dissimilar, depending on their position within a word (e.g., [Formula: see text] - [Formula: see text] vs. [Formula: see text] - [Formula: see text]). We employed a…
Release of premotor activity after repetitive transcranial magnetic stimulation of prefrontal cortex
2008
In the present study we aimed to explore by means of repetitive transcranial magnetic stimulation (rTMS) the reciprocal influences between prefrontal cortex (PFC) and premotor cortex (PMC). Subjects were asked to observe on a computer monitor different pictures representing manipulations of different kind of tools. They had to produce a movement (go condition) or to keep the resting position (no-go condition) at the appearance of different cue signals represented by different colors shown alternatively on the hands manipulating the tools or on the picture background. Motor evoked potentials (MEPs) were collected at the offset of the visual stimuli before and after a 10 minute, 1 Hz rTMS tra…
The effects of length and transposed-letter similarity in lexical decision: evidence with beginning, intermediate, and adult readers.
2007
Do length and transposed-letter effects reflect developmental changes on reading acquisition in a transparent orthography? Can computational models of visual word recognition accommodate these changes? To answer these questions, we carried out a masked priming lexical decision experiment with Spanish beginning, intermediate, and adult readers (N=36, 44, and 39; average age: 7, 11, and 22 years, respectively). Target words were either short or long (6.5 vs. 8.5 letters), and transposed-letter primes were formed by the transposition of two letters (e.g. aminal-ANIMAL) or by the substitution of two letters (orthographic control: arisal-ANIMAL). Children showed a robust length effect (i.e. long…
Visual tracking combined with hand-tracking improves time perception of moving stimuli
2014
A number of studies have shown that performing a secondary task while executing a time-judgment task impairs performance on the latter task. However, this turns out not to be the case for certain motor secondary tasks. We show that concomitant secondary motor tasks involving pointing, when performed during a time-judgment task, can actually improve our time-judgment abilities. We compared adult participants' performance in a time-of-movement paradigm with visual pursuit-only and with visual pursuit plus hand pursuit. Rather than interfering with their estimation of stimulus movement duration, the addition of hand pursuit significantly improved their judgment. In addition, we considered the …
Ethical assessment of hepatitis C virus treatment: The lesson from first generation protease inhibitors
2015
Abstract Since chronic hepatitis C has mostly become curable, issues concerning choice and allocation of treatment are of major concern. We assessed the foremost ethical issues in hepatitis C virus therapy with 1st generation protease inhibitors using the personalist ethical framework within the health technology assessment methodology. Our aim was to identify values at stake/in conflict and to support both the physicians’ choices in hepatitis C therapy and social (macro-) allocation decision-making. The ethical assessment indicates that: (1) safety/effectiveness profile of treatment is guaranteed if its use is restricted to the patients subgroups who may benefit from it; (2) patients shoul…
Neural correlates of valence generalization in an affective conditioning paradigm.
2014
In case of uncertainty, predictions that are based on prior, similar experiences guide our decision by processes of generalization. Over-generalization of negative information has been identified as an important feature of several psychopathologies, including anxiety disorders and depression, and might underlie biased interpretation of ambiguous information. Here, we investigated the neural correlates of valence generalization to ambiguous stimuli using a translational affective conditioning task during fMRI. Twenty-five healthy individuals participated in a conditioning procedure with (1) an initial acquisition phase, where participants learned the positive and negative valence of two diff…