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1.
J Vis ; 24(4): 11, 2024 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-38607637

RESUMO

Using a novel approach to classification images (CIs), we investigated the visual expertise of surveyors for luminance and binocular disparity cues simultaneously after screening for stereoacuity. Stereoscopic aerial images of hedges and ditches were classified in 10,000 trials by six trained remote sensing surveyors and six novices. Images were heavily masked with luminance and disparity noise simultaneously. Hedge and ditch images had reversed disparity on around half the trials meaning hedges became ditch-like and vice versa. The hedge and ditch images were also flipped vertically on around half the trials, changing the direction of the light source and completing a 2 × 2 × 2 stimulus design. CIs were generated by accumulating the noise textures associated with "hedge" and "ditch" classifications, respectively, and subtracting one from the other. Typical CIs had a central peak with one or two negative side-lobes. We found clear differences in the amplitudes and shapes of perceptual templates across groups and noise-type, with experts prioritizing binocular disparity and using this more effectively. Contrariwise, novices used luminance cues more than experts meaning that task motivation alone could not explain group differences. Asymmetries in the luminance CIs revealed individual differences for lighting interpretation, with experts less prone to assume lighting from above, consistent with their training on aerial images of UK scenes lit by a southerly sun. Our results show that (i) dual noise in images can be used to produce simultaneous CI pairs, (ii) expertise for disparity cues does not depend on stereoacuity, (iii) CIs reveal the visual strategies developed by experts, (iv) top-down perceptual biases can be overcome with long-term learning effects, and (v) CIs have practical potential for directing visual training.


Assuntos
Iluminação , Disparidade Visual , Humanos , Sinais (Psicologia) , Individualidade , Aprendizagem
2.
Behav Brain Res ; 466: 114983, 2024 May 28.
Artigo em Inglês | MEDLINE | ID: mdl-38580200

RESUMO

Humans and other animals exhibit aversive behavioral and emotional responses to unequal reward distributions compared with their conspecifics. Despite the significance of this phenomenon, experimental animal models designed to investigate social inequity aversion and delve into the underlying neurophysiological mechanisms are limited. In this study, we developed a rat model to determine the effects of socially equal or unequal reward and stress on emotional changes in male rats. During the training session, the rats were trained to escape when a sound cue was presented, and they were assigned to one of the following groups: all escaping rats [advantageous equity (AE)], freely moving rats alongside a restrained rat [advantageous inequity (AI)], all restrained rats [disadvantageous equity (DE)], and a rat restrained in the presence of freely moving companions [disadvantageous inequity (DI)]. During the test session, rats in the advantageous group (AE and AI) escaped after the cue sound (expected reward acquisition), whereas rats in the disadvantageous group (DE and DI) could not escape despite the cue being presented (expected reward deprivation). Emotional alteration induced by exposure to restraint stress under various social interaction circumstances was examined using an open field test. Notably, the DI group displayed reduced exploration of the center zone during the open field tests compared with the other groups, indicating heightened anxiety-like behaviors in response to reward inequity. Immunohistochemical analysis revealed increased c-Fos expression in the medial prefrontal and orbitofrontal cortices, coupled with reduced c-Fos expression in the striatum and nucleus accumbens under DI conditions, in contrast to the other experimental conditions. These findings provide compelling evidence that rats are particularly sensitive to reward inequity, shedding light on the neurophysiological basis for distinct cognitive processes that manifest when individuals are exposed to social equity and inequity situations.


Assuntos
Comportamento Animal , Emoções , Proteínas Proto-Oncogênicas c-fos , Recompensa , Estresse Psicológico , Animais , Masculino , Ratos , Proteínas Proto-Oncogênicas c-fos/metabolismo , Emoções/fisiologia , Estresse Psicológico/metabolismo , Estresse Psicológico/fisiopatologia , Comportamento Animal/fisiologia , Comportamento Social , Núcleo Accumbens/metabolismo , Córtex Pré-Frontal/metabolismo , Sinais (Psicologia) , Ratos Sprague-Dawley
3.
J Exp Psychol Anim Learn Cogn ; 50(2): 99-117, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38587940

RESUMO

According to the cycle/trial (C/T) rule, the rate of associative learning is a function of the ratio between the overall rate of U.S. presentation (C) and its rate in the presence of the conditioned stimulus (CS; [T]). This rule is well supported in studies with nonhumans. The present study was conducted to test whether it also applies to human contingency learning. In Experiment 1, participants were exposed to rapid streams of trials. Sensitivity to the cue-outcome contingency varied with both intertrial interval (ITI, which captures C) and cue duration, but the C/T rule was not respected, notably because the effect of ITI was much larger than the effect of cue duration. Experiment 2 showed that mere suppression of verbal strategies did not alter the magnitude of the ITI effect. Experiment 3 replicated Experiment 1 but with cue duration and ITI varied between 1,000 and 3,000 ms instead of between 100 and 1,000 ms. Performance was insensitive to both cue duration and ITI. This was not the consequence of Experiment 3 only varying the cue duration to ITI ratio by a factor of 3; in Experiment 4 where the cue duration was 100 ms, a 300-ms ITI was sufficient to observe an ITI effect. The lack of an ITI effect with a 1,000-ms cue and an ITI varying between 1,000 and 3,000 ms was replicated in Experiment 5. These results are discussed in light of how processes underlying associative learning might break down when events occur very rapidly. (PsycInfo Database Record (c) 2024 APA, all rights reserved).


Assuntos
Condicionamento Operante , Sinais (Psicologia) , Humanos , Condicionamento Clássico
4.
Atten Percept Psychophys ; 86(4): 1330-1341, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38514596

RESUMO

When a movement triggers effects with incompatible features, conflict between action and effect features creates costs for action planning and initiation. We investigated whether such action control costs also factor into action choices in terms of the principle of least effort. Participants completed a reaction-time experiment, where they were instructed to perform left and right mouse swipes in response to directional cues presented on the screen. Participants could select between two action options on each trial: Depending on which part of the screen (upper or lower) the action was performed in, the swipe resulted in a visual stimulus moving in the same (compatible) or in the opposite (incompatible) direction as the mouse. Incompatible action-effect mappings did indeed incur action control costs. In accordance with effort avoidance, the proportion of compatible choices was significantly above chance level, suggesting that action selection and initiation costs factor into participants preferences. Interestingly, however, participants' choice tendencies were not predicted by the actual increase in action-initiation costs in the incompatible condition. This indicates that effort-related decisions are not simply based on monitoring performance in the actual task, but they are also influenced by preestablished notions of action-planning costs.


Assuntos
Atenção , Comportamento de Escolha , Orientação , Reconhecimento Visual de Modelos , Desempenho Psicomotor , Tempo de Reação , Humanos , Desempenho Psicomotor/fisiologia , Masculino , Feminino , Reconhecimento Visual de Modelos/fisiologia , Adulto Jovem , Adulto , Conflito Psicológico , Sinais (Psicologia) , Percepção de Movimento , Tomada de Decisões , Função Executiva
5.
Sci Rep ; 14(1): 6217, 2024 03 14.
Artigo em Inglês | MEDLINE | ID: mdl-38485965

RESUMO

Switching between tasks entails costs when compared to repeating the same task. It is unclear whether switch costs also occur when repeating the same task but switching the underlying cognitive strategy (CS). Here, we investigated whether CS switch costs exist despite overlap in mental processing between CSs and a lack of abstract goal (always "solve task X") or answer key binding switches. Specifically, we asked participants to judge the identity of two misaligned objects by either mental or manual computer-mediated object rotation. In each trial of Block 1, to measure switch costs without choice-related cognitive processes, a cue indicated which CS (mental/manual) to use. In Block 2, the CS was freely chosen. Participants exhibited considerable CS switch costs for both cued and freely chosen switches. Moreover, Block 1 switch costs moderately predicted Block 2 switch frequency, while an overall tendency for CS repetition was observed. In sum, we found that switch costs are not confined to situations in which tasks are switched but generalize to situations in which the task stays identical and the CS is switched instead. The results have implications for modern computerized cognitive environments in which a multitude of cognitive strategies is available for the same task.


Assuntos
Sinais (Psicologia) , Desempenho Psicomotor , Humanos , Tempo de Reação , Rotação , Cognição
6.
Behav Brain Res ; 464: 114926, 2024 Apr 27.
Artigo em Inglês | MEDLINE | ID: mdl-38431152

RESUMO

The Addictions Neuroclinical Assessment (ANA) is a recently-developed framework offering a more holistic understanding of three neurofunctional and behavioral domains that reflect the neurobiological dysfunction seen in alcohol use disorder (AUD). While the ANA domains have been well-validated across independent laboratories, there is a critical need to identify neural markers that subserve the proposed neurofunctional domains. The current study involves secondary data analysis of a two-week experimental medication trial of ibudilast (50 mg BID). Forty-five non-treatment-seeking participants with AUD (17F / 28 M) completed a battery of validated behavioral assessments forming the basis of their incentive salience factor score, computed via factor analysis, as well as a functional neuroimaging (fMRI) task assessing their neural reactivity to visual alcohol cues after being on placebo or ibudilast for 7 days. General linear models were conducted to examine the relationship between incentive salience and neural alcohol cue-reactivity in the ventral and dorsal stratum. Whole-brain generalized linear model analyses were conducted to examine associations between neural alcohol cue-reactivity and incentive salience. Age, sex, medication, and smoking status were included as covariates. Incentive salience was not associated with cue-elicited activation in the dorsal or ventral striatum. Incentive salience was significantly positively correlated (p < 0.05) with alcohol cue-elicited brain activation in reward-learning and affective regions including the insula and posterior cingulate cortices, bilateral precuneus, and bilateral precentral gyri. The ANA incentive salience factor is reflected in brain circuitry important for reward learning and emotion processing. Identifying a sub-phenotype of AUD characterized by increased incentive salience to alcohol cues allows for precision medicine approaches, i.e. treatments specifically targeting craving and reward from alcohol use. This study serves as a preliminary bio-behavioral validation for the incentive salience factor of the ANA. Further studies validating the neural correlates of other ANA factors, as well as replication in larger samples, appear warranted.


Assuntos
Alcoolismo , Comportamento Aditivo , Humanos , Motivação , Encéfalo/diagnóstico por imagem , Consumo de Bebidas Alcoólicas , Comportamento Aditivo/diagnóstico por imagem , Etanol , Sinais (Psicologia) , Imageamento por Ressonância Magnética/métodos
7.
Appetite ; 197: 107291, 2024 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-38485058

RESUMO

While contributing to the conservation of natural fish stocks, the aquaculture sector imposes environmental repercussions. The growing popularity of colour-graded eco-labels in promoting pro-environmental practices in food production underscores the need for scientific insights into consumer responses to such labels, particularly with the imminent prospect of a harmonized European labelling framework. The existing literature, although limited and divergent, advocates for real-life testing with fresh, perishable food products, emphasizing the inadequacy of standalone labels and the necessity for complementary measures. Furthermore, the mechanisms underlying how consumers process multi-coloured Front-of-Pack (FOP) labels remain ambiguous, with uncertainties regarding induced consumption shifts stemming from both deliberate information processing and less deliberate associations. This article presents findings from a randomized control trial conducted in a simulated fishmonger store in Derio, Bizkaia, Spain, involving 200 consumers. Participants selected various sea bass products out of multiple options. This task was subject to a 2 (Enviroscore: with vs without) x 2 (Supporting info on Enviroscore: with vs without) between-subject design, resulting in four treatment groups. A 16% increase in the likelihood of selecting lower-impact products was observed. Notably, this effect was evident only in the absence of supporting information on Enviroscore, and the observed impact could not be attributed to any indirect attention effect. In conclusion, Enviroscore exhibits potential in steering consumer choices toward more environmentally friendly aquaculture fish options, even in physical retail settings. However, these effects may be rooted in unconscious responses rather than deliberate environmental considerations, raising questions about the suitability of envisaged policy orientations encompassing disaggregated environmental, nutritional, animal welfare, and social welfare scores. Generalization of these findings warrants validation through further research encompassing a more comprehensive range of products.


Assuntos
Sinais (Psicologia) , Preferências Alimentares , Animais , Humanos , Rotulagem de Alimentos/métodos , Alimentos Marinhos , Comportamento de Escolha , Peixes , Comportamento do Consumidor , Valor Nutritivo
8.
Methods Cell Biol ; 185: 137-150, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38556445

RESUMO

Numerous studies have shown that aging in humans leads to a decline in olfactory function, resulting in deficits in acuity, detection threshold, discrimination, and olfactory-associated memories. Furthermore, impaired olfaction has been identified as a potential indicator for the onset of age-related neurodegenerative diseases, including Alzheimer's disease (AD). Studies conducted on mouse models of AD have largely mirrored the findings in humans, thus providing a valuable system to investigate the cellular and circuit adaptations of the olfactory system during natural and pathological aging. However, the majority of previous research has focused on assessing the detection of neutral or synthetic odors, with little attention given to the impact of aging and neurodegeneration on the recognition of social cues-a critical feature for the survival of mammalian species. Therefore, in this study, we present a battery of olfactory tests that use conspecific urine samples to examine the changes in social odor recognition in a mouse model of neurodegeneration.


Assuntos
Doença de Alzheimer , Transtornos do Olfato , Humanos , Camundongos , Animais , Sinais (Psicologia) , Olfato , Transtornos do Olfato/diagnóstico , Comportamento Social , Modelos Animais de Doenças , Mamíferos
9.
Sensors (Basel) ; 24(2)2024 Jan 09.
Artigo em Inglês | MEDLINE | ID: mdl-38257494

RESUMO

Temporal gait asymmetry (TGA) is commonly observed in individuals facing mobility challenges. Rhythmic auditory stimulation (RAS) can improve temporal gait parameters by promoting synchronization with external cues. While biofeedback for gait training, providing real-time feedback based on specific gait parameters measured, has been proven to successfully elicit changes in gait patterns, RAS-based biofeedback as a treatment for TGA has not been explored. In this study, a wearable RAS-based biofeedback gait training system was developed to measure temporal gait symmetry in real time and deliver RAS accordingly. Three different RAS-based biofeedback strategies were compared: open- and closed-loop RAS at constant and variable target levels. The main objective was to assess the ability of the system to induce TGA with able-bodied (AB) participants and evaluate and compare each strategy. With all three strategies, temporal symmetry was significantly altered compared to the baseline, with the closed-loop strategy yielding the most significant changes when comparing at different target levels. Speed and cadence remained largely unchanged during RAS-based biofeedback gait training. Setting the metronome to a target beyond the intended target may potentially bring the individual closer to their symmetry target. These findings hold promise for developing personalized and effective gait training interventions to address TGA in patient populations with mobility limitations using RAS.


Assuntos
Biorretroalimentação Psicológica , Dispositivos Eletrônicos Vestíveis , Humanos , Estimulação Acústica , Sinais (Psicologia) , Marcha
10.
J Gambl Stud ; 40(1): 131-157, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37270469

RESUMO

Attempts to obtain rewards are not always successful. Despite investing much time, effort, or money, sometimes individuals may not obtain any reward. Other times they may obtain some reward, but the obtained reward may be smaller than their initial investment, such as partial wins in gambling. It remains unclear how such ambiguous outcomes are appraised. To address this question, we systematically varied the payoffs for different outcomes in a computerized scratch card task across three experiments. To test outcome appraisal, we used response vigor as a novel proxy. In the scratch card task, participants turned three cards one by one. Depending on the turned cards, they either received an amount that was higher than the wager (win), an amount lower than the wager (partial win), or nothing (loss). Overall, participants responded to partial wins more slowly than losses, but more quickly than wins. Partial wins were therefore appraised to be better than losses, but worse than wins. Importantly, further analyses showed that outcome appraisal was not based on the net win or loss amount. Instead, participants primarily used the configuration of turned cards as a cue for the relative rank of an outcome within a specific game. Outcome appraisals thus utilize simple heuristic rules, rely on salient information (such as outcome-related cues in gambling), and are specific to a local context. Together, these factors may contribute to the misperception of partial wins as real wins in gambling. Future work may examine how outcome appraisal may be modulated by the salience of certain information, and investigate the appraisal process in contexts beyond gambling.


Assuntos
Jogo de Azar , Humanos , Jogo de Azar/psicologia , Sinais (Psicologia) , Investimentos em Saúde , Recompensa
11.
J Exp Psychol Learn Mem Cogn ; 50(1): 39-51, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37498704

RESUMO

This study investigated the nature of switch costs after trials on which the cued task had been either only prepared (cue-only trials) or both prepared and performed (completed trials). Previous studies have found that task-switch costs occur following cue-only trials, demonstrating that preparing-without performing-a task is sufficient to produce a subsequent switch cost. However, it is not clear whether switch costs after these different types of trial reflect an impact of task-switching upon task preparation or task performance on the current trial. The present study examined this question using a double-registration procedure with both cue-only and completed trials. Participants responded to both task-cue and target stimuli. In cue responses, a cost of switching task cues (cue-switch cost) but not of switching tasks (task-switch cost) followed both cue-only and completed trials. In target responses, a task-switch cost but no cue-switch cost followed both cue-only trials and completed trials, and this task-switch cost was larger following completed than cue-only trials. The presence of the task-switch cost in target responses following cue-only trials indicates a specific impact of previous preparation upon task performance, and the increased size of this cost following completed trials indicates an additional impact of previous performance. Together, these results suggest that both task preparation and task performance contribute to the subsequent task-switch cost affecting task performance. (PsycInfo Database Record (c) 2024 APA, all rights reserved).


Assuntos
Sinais (Psicologia) , Análise e Desempenho de Tarefas , Humanos , Tempo de Reação/fisiologia , Bases de Dados Factuais , Desempenho Psicomotor/fisiologia
12.
Psychol Res ; 88(2): 523-534, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37831215

RESUMO

Previous research indicates that performing passes with a head fake in basketball leads to increased response initiation times and errors as compared to performing a pass without a head fake. These so-called fake production costs only occurred when not given the time to mentally prepare the deceptive movement. In the current study, we investigated if extensive practice could reduce the cognitive costs of producing a pass with head fake. Twenty-four basketball novices participated in an experiment on five consecutive days. A visual cue prompted participants to play a pass with or without a head fake either to the left or right side. The cued action had to be executed after an interstimulus interval (ISI) of either 0 ms, 400 ms, 800 ms or 1200 ms, allowing for different movement preparation times. Results indicated higher response initiation times (ITs) and error rates (ERs) for passes with head fakes for the short preparation intervals (ISI 0 ms and 400 ms) on the first day but no difference for the longer preparation intervals (ISI 800 ms and 1200 ms). After only one day of practice, participants showed reduced fake production costs (for ISI 0 ms) and were even able to eliminate these cognitive costs when given time to mentally prepare the movement (for ISI 400 ms). Accordingly, physical practice can reduce the cognitive costs associated with head-fake generation. This finding is discussed against the background of the strengthening of stimulus response associations.


Assuntos
Basquetebol , Humanos , Basquetebol/fisiologia , Basquetebol/psicologia , Tempo de Reação/fisiologia , Movimento , Cognição , Sinais (Psicologia)
13.
Psychol Res ; 88(3): 910-920, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38112804

RESUMO

Recent task-switching studies highlighted the presence of feature binding processes. These studies documented that even a task-irrelevant feature (the context, henceforth) may be bound with the task and the response in each trial. When the context repeated in the following trial, it supposedly retrieved the bound features, causing benefits when the task and the response repeated and costs otherwise (i.e. full repetition benefits). In the present study, we aim to rule out an alternative explanation for such full repetition benefits in task switching. These benefits were observed in studies that used a cue-related context so that full repetition conditions always implied a cue repetition. Therefore, these full repetition benefits may be ascribed to the priming of cue encoding, instead of the binding of the context. In the present study, we implemented a similar context manipulation but used univalent target stimuli and did not present any cue. Hence, the varying context was never cue-related. We still found full repetition benefits but only when the context appeared before the target and not when they appeared simultaneously. Thus, full repetition benefits can be observed in the absence of priming of cue encoding. However, the context must occupy a prominent position (i.e. at the beginning of the trial). These results, therefore, reinforce the hypothesis that full repetition benefits stem from binding processes that take place on a trial-by-trial basis and involve both task-relevant (the task and the response) and task-irrelevant features (the context).


Assuntos
Sinais (Psicologia) , Humanos , Tempo de Reação/fisiologia
14.
Sci Rep ; 13(1): 19379, 2023 11 08.
Artigo em Inglês | MEDLINE | ID: mdl-37938617

RESUMO

Assessing drivers' cognitive load is crucial for driving safety in challenging situations. This research employed the occurrence of drivers' natural eye blinks as cues in continuously recorded EEG data to assess the cognitive workload while reactive or proactive driving. Twenty-eight participants performed either a lane-keeping task with varying levels of crosswind (reactive) or curve road (proactive). The blink event-related potentials (bERPs) and spectral perturbations (bERSPs) were analyzed to assess cognitive load variations. The study found that task load during reactive driving did not significantly impact bERPs or bERSPs, possibly due to enduring alertness for vehicle control. The proactive driving revealed significant differences in the occipital N1 component with task load, indicating the necessity to adapt the attentional resources allocation based on road demands. Also, increased steering complexity led to decreased frontal N2, parietal P3, occipital P2 amplitudes, and alpha power, requiring more cognitive resources for processing relevant information. Interestingly, the proactive and reactive driving scenarios demonstrated a significant interaction at the parietal P2 and occipital N1 for three difficulty levels. The study reveals that EEG measures related to natural eye blink behavior provide insights into the effect of cognitive load on different driving tasks, with implications for driver safety.


Assuntos
Sinais (Psicologia) , Registros , Humanos , Alocação de Recursos , Cognição , Eletroencefalografia
15.
Cognition ; 241: 105632, 2023 12.
Artigo em Inglês | MEDLINE | ID: mdl-37806210

RESUMO

Prudently choosing who to interact with and who to avoid is an important ability to ensure that we benefit from a cooperative interaction. While the role of others' preferences, attributes, and values in partner choice have been established (Rossetti, Hilbe & Hauser, 2022), much less is known about whether the manner in which a potential partner plans and implements a decision provides helpful cues for partner choice. We used a partner choice paradigm in which participants chose who to interact with in the Prisoners' Dilemma. Before choosing a cooperation partner, participants were presented with information about the potential partners' decision-related actions in another round of the Prisoners' Dilemma. They received either information about the potential partners' planning during decision making (i.e., decision-time; Experiment 1) or action execution during decision implementation (i.e., movement directness; Experiment 2). Across both games, participants preferred to interact with those who planned actions quickly or executed actions with direct and smooth movements, indicating that they were cooperating confidently and without deliberation. This demonstrates that action cues present in either the planning or implementation of economic decisions influence partner choice. We discuss implications of this finding for human decision-making and perception-action coupling in action understanding.


Assuntos
Sinais (Psicologia) , Dilema do Prisioneiro , Humanos , Tomada de Decisões
16.
Can Med Educ J ; 14(4): 25-34, 2023 09.
Artigo em Inglês | MEDLINE | ID: mdl-37719409

RESUMO

Purpose: Equitable appointments of departmental leaders in medical schools have lagged behind other Equity, Diversity, and Inclusion (EDI) advancements. The purpose of this research was to 1) analyze how policy documents communicate changing ideas of EDI, employment equity, and departmental leadership; and 2) investigate department heads' (DH) perspectives on EDI policies and practices. Methods: We conducted a critical discourse analysis to examine underlying assumptions shaping EDI and departmental leadership in one Canadian medical school. We created and analyzed a textual archive of EDI documents (n = 17, 107 pages) and in-depth interviews with past (n = 6) and current (n = 12) DH (830 minutes; 177 pages). Results: Documents framed EDI as: a legal requirement; an aspiration; and historical reparation. In interviews, participants framed EDI as: affirmative action; relationships; numerical representation; and relinquishing privilege. We noted inconsistent definitions of equity-deserving groups. Conclusions: Change is slowly happening, with emerging awareness of white privilege, allyship, co-conspiracy, and the minority tax. However, there is more urgent work to be done. This work requires an intersectional lens. Centering the voices, and taking cues from equity-deserving leaders and scholars will help ensure that EDI pathways, such as those used to cultivate department leaders, are more inclusive, effective, and aligned with intentions.


Objectif: La nomination des directeurs de département dans les facultés de médecine accuse un retard en matière d'équité, de diversité et d'inclusion (EDI) en comparaison avec d'autres avancées. L'objectif de ce travail était 1) d'analyser dans quelle mesure les documents de politique reflètent l'évolution des idées liées à l'EDI, à l'équité en matière d'emploi et au leadership départemental; et 2) de sonder le point de vue des directeurs de département (DD) sur les politiques et les pratiques en matière d'EDI. Méthodes: Empruntant le cadre d'une analyse critique du discours, nous avons examiné les conceptions sous-jacentes qui façonnent l'EDI et le leadership des DD dans une faculté de médecine canadienne. Nous avons créé et analysé un corpus de documents relatifs à l'EDI (n=17, 107 pages) et d'entrevues approfondies avec des directeurs de département anciens (n=6) et actuels (n=12) (830 minutes; 177 pages). Résultats: Les documents décrivent l'EDI comme une obligation légale, une aspiration et une réparation historique. Lors des entretiens, pour définir l'EDI, les participants ont évoqué l'action positive, les relations, la représentation numérique et l'abandon de privilèges. Nous avons noté des incohérences quant à la définition de « groupe en quête d'équité ¼. Conclusions: Le changement s'opère lentement, avec une prise de conscience des notions de privilège blanc, d'alliance, de complicité et de taxe pour les minorités ¼. Cependant, il y a un travail plus urgent à accomplir. Ce travail nécessite une perspective intersectionnelle. Le fait d'écouter les leaders et les universitaires en quête d'équité et de leur accorder une place centrale fera en sorte que les voies de l'EDI, comme celles empruntées pour cultiver le leadership dans les départements, soient plus inclusives, plus efficaces et plus en adéquation avec les objectifs.


Assuntos
Arquivos , Faculdades de Medicina , Humanos , Canadá , Sinais (Psicologia) , Política Pública
17.
PLoS One ; 18(9): e0289741, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37713370

RESUMO

A portrait is an exercise of impression management: the sitter can choose the impression she or he wants to create in the eyes of others': competence, trustworthiness, dominance, etc. Indirectly, this choice informs us about the qualities that were specifically valued at the time the portrait was created. In a previous paper, we have shown that cues of perceived trustworthiness in portraits increased in time during the modern period in Europe, meaning that people probably granted more importance to be seen as a trustworthy person. Moreover, this increase is correlated to economic development. In this study, we aim to replicate this result, using more controlled databases: 1) a newly created database of European head-of-state sovereigns (N = 966, from 1400 to 2020), that is a database of individuals holding the same social position across time and countries, and 2) a database of very high-quality portraits digitized with the same technique, and coming from the same Museum, the Chateau de Versailles database (N = 2,291, from 1483 to 1938). Using mixed effects linear models, we observed in the first dataset that the modeled perceived facial trustworthiness of these sovereigns' faces increased over time (b = 0.182 ± 0.04 s.e.m., t(201) = 4.40, p < 0.001). On the opposite, no effect of time was detected on the portraits of the Château de Versailles (b = - 0.02 ± 0.03 s.e.m., t(759) = - 0.85, p > .250). We conclude by discussing the potential of this new technique to uncover long-term behavioral changes in history, as well as its limitations.


Assuntos
Sinais (Psicologia) , Confiança , Feminino , Humanos , Bases de Dados Factuais , Desenvolvimento Econômico , Europa (Continente)
18.
J Clin Exp Neuropsychol ; 45(8): 786-797, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-37728425

RESUMO

INTRODUCTION: Within clinical neuropsychology, a classic diagnostic distinction is made between cortical and subcortical disorders, especially based on their memory profiles. Typically, this is based on the comparison of recall and recognition trials, where individuals with cortical conditions do not tend to benefit (i.e., score well) on recognition trials and individuals with subcortical conditions do. Although the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) is a widely used brief cognitive battery, there is a lack of evidence to support this measure's utility in distinguishing between the memory profiles of these conditions. METHOD: Thirty-six mild Alzheimer's disease (AD), 55 Parkinson's disease (PD), and 105 essential tremor (ET) participants (N = 196) were administered the RBANS with additional Story and Figure Recognition subtests. Group differences on recall and recognition scores (Total Correct, Hits or True Positives, False Positive Errors, and discriminability index) were examined across the three groups, while controlling for the influence of age and gender. RESULTS: As expected, individuals with AD had poorer recognition scores compared to the other clinical groups across tasks (all p-values < .05), while the ET sample largely performed comparably to the PD sample. With the exception of comparable Figure Recognition and Recall in the PD sample, all groups exhibited significantly greater recognition Hit performance compared to Recall (all p-values < .05). CONCLUSIONS: The group differences in performance across RBANS recognition subtests suggest support for traditional "cortical" and "subcortical" profiles. However, all groups, including the mild AD sample, demonstrated a benefit from recognition cues compared to free recall. Overall, these findings support the inclusion of the newly developed Story and Figure Recognition subtests in future clinical practice and research endeavors.


Assuntos
Doença de Alzheimer , Doença de Parkinson , Humanos , Reconhecimento Psicológico , Rememoração Mental , Doença de Alzheimer/diagnóstico , Sinais (Psicologia)
19.
Perception ; 52(10): 681-694, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-37525928

RESUMO

The three-factor model argues that the spatial orienting benefit triggered by the cue, the spatial selection benefit of cue-target matching, and the detection cost of distinguishing the cue from the target contribute to the measured inhibition of return (IOR) effect. According to the three-factor model, the spatial selection benefit dominates the occurrence of the IOR effect in the discrimination task, while the detection cost is negligible. The present study verified the three-factor model in the discrimination task under the cue-target paradigm by manipulating the spatial location and nonspatial feature consistency of the cue and the target as well as the promotion or hindrance of attentional disengagement from the cued location with a central reorienting cue. The results indicated that the three factors of the three-factor model contributed to the measured IOR effect in the discrimination task. Interestingly, the IOR effect was stable when the cue and target were perfectly repeated and attention was maintained at the cued location, implying that detection cost was not a negligible factor. The current study supported the contribution of all three factors in the three-factor model to the measured IOR effect; however, we argue that the role of detection cost in the discrimination task under different paradigms should be further refined.


Assuntos
Atenção , Sinais (Psicologia) , Humanos , Atenção/fisiologia , Inibição Psicológica , Tempo de Reação/fisiologia
20.
Artigo em Inglês | MEDLINE | ID: mdl-37607137

RESUMO

Assessing the condition of every schizophrenia patient correctly normally requires lengthy and frequent interviews with professionally trained doctors. To alleviate the time and manual burden on those mental health professionals, this paper proposes a multimodal assessment model that predicts the severity level of each symptom defined in Scale for the Assessment of Thought, Language, and Communication (TLC) and Positive and Negative Syndrome Scale (PANSS) based on the patient's linguistic, acoustic, and visual behavior. The proposed deep-learning model consists of a multimodal fusion framework and four unimodal transformer-based backbone networks. The second-stage pre-training is introduced to make each off-the-shelf pre-trained model learn the pattern of schizophrenia data more effectively. It learns to extract the desired features from the view of its modality. Next, the pre-trained parameters are frozen, and the light-weight trainable unimodal modules are inserted and fine-tuned to keep the number of parameters low while maintaining the superb performance simultaneously. Finally, the four adapted unimodal modules are fused into a final multimodal assessment model through the proposed multimodal fusion framework. For the purpose of validation, we train and evaluate the proposed model on schizophrenia patients recruited from National Taiwan University Hospital, whose performance achieves 0.534/0.685 in MAE/MSE, outperforming the related works in the literature. Through the experimental results and ablation studies, as well as the comparison with other related multimodal assessment works, our approach not only demonstrates the superiority of our performance but also the effectiveness of our approach to extract and integrate information from multiple modalities.


Assuntos
Sinais (Psicologia) , Esquizofrenia , Humanos , Esquizofrenia/diagnóstico , Linguística , Aprendizagem , Acústica
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