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1.
Behav Res Methods ; 2023 Oct 06.
Artículo en Inglés | MEDLINE | ID: mdl-37801214

RESUMEN

The negative affective priming (NAP) task is a behavioral measure of inhibition of emotional stimuli. Previous studies using the NAP task have found that individuals with depression show reduced inhibition of negative stimuli, suggesting that inhibition biases may play a role in the etiology and maintenance of depression. However, the psychometric properties of the NAP task have not been evaluated or reported. In the present study, we report data on the association between NAP task performance and depression symptoms in three independent samples, and we evaluate the internal consistency and test-retest reliability of the NAP effect indices. The NAP effect for both negative and positive target words had poor internal consistency in all three samples, as well as poor 2-week (Study 2) and 6-month (Study 3) test-retest reliability. The internal consistency and test-retest reliability of response times (RT) for the individual trial types were moderate to high, as were the intercorrelations between trial types. This pattern of results indicates that overall RT is reliable but variance in RTs for the different trial types in the NAP task is indistinguishable from variance in overall RT. Depression symptom severity was not associated with the NAP effect for negative or positive target words in any of the samples, which could be due to the poor reliability of the NAP effect. Based on these findings, we do not recommend that researchers use the NAP task as a measure of individual differences in the inhibition of emotional stimuli.

2.
Nicotine Tob Res ; 24(9): 1439-1447, 2022 08 06.
Artículo en Inglés | MEDLINE | ID: mdl-35443034

RESUMEN

INTRODUCTION: This study examined attentional bias (AB) to e-cigarette cues among a sample of non-smoking daily e-cigarette users (n = 27), non-smoking occasional e-cigarette users (n = 32), and control participants (n = 61) who did not smoke or use e-cigarettes. The possibility that e-cigarette users develop a transference of cues to traditional cigarettes was also examined. METHODS: AB was assessed using a free-viewing eye-gaze tracking methodology, in which participants viewed 180 pairs of images for 4 seconds (e-cigarette and neutral image, e-cigarette and smoking image, smoking and neutral image). RESULTS: Daily and occasional e-cigarette users attended to pairs of e-cigarette and neutral images equally, whereas non-users attended to neutral images significantly more than e-cigarette images. All three groups attended to e-cigarette images significantly more than smoking images, with significantly larger biases for e-cigarette users. There were no between-group differences in attention to pairs of smoking and neutral images. A moderation analysis indicated that for occasional users but not daily users, years of vaping reduced the bias toward neutral images over smoking images. CONCLUSIONS: Taken together, the results indicate that the e-cigarette users exhibit heightened attention to e-cigarettes relative to non-users, which may have implications as to how they react to e-cigarette cues in real-world settings. AB for e-cigarettes did not transfer to traditional cigarette cues, which indicates that further research is required to identify the mechanisms involved in the migration of e-cigarettes to traditional cigarettes. IMPLICATIONS: This study is the first attempt to examine attentional biases for e-cigarette cues among non-smoking current e-cigarette users using eye-gaze tracking. The results contribute to the growing literature on the correlates of problematic e-cigarette use and indicate that daily and occasional e-cigarette use is associated with attentional biases for e-cigarettes. The existence of attentional biases in e-cigarette users may help to explain the high rate of failure to quit e-cigarettes and provides support for the utility of attentional bias modification in the treatment of problematic e-cigarette use.


Asunto(s)
Sesgo Atencional , Sistemas Electrónicos de Liberación de Nicotina , Cese del Hábito de Fumar , Vapeo , Tecnología de Seguimiento Ocular , Humanos , Fumadores , Cese del Hábito de Fumar/métodos
3.
Appetite ; 100: 55-63, 2016 May 01.
Artículo en Inglés | MEDLINE | ID: mdl-26873452

RESUMEN

Food addiction and emotional eating both influence eating and weight, but little is known of how negative mood affects the attentional processes that may contribute to food addiction. The purpose of this study was to compare attention to food images in adult women (N = 66) with versus without food addiction, before and after a sad mood induction (MI). Participants' eye fixations were tracked and recorded throughout 8-s presentations of displays with healthy food, unhealthy food, and non-food images. Food addiction was self-reported using the Yale Food Addiction Scale. The sad MI involved watching an 8-min video about a young child who passed away from cancer. It was predicted that: (1) participants in the food addiction group would attend to unhealthy food significantly more than participants in the control group, and (2) participants in the food addiction group would increase their attention to unhealthy food images following the sad MI, due to increased emotional reactivity and poorer emotional regulation. As predicted, the sad MI had a different effect for those with versus without food addiction: for participants with food addiction, attention to unhealthy images increased following the sad MI and attention to healthy images decreased, whereas for participants without food addiction the sad MI did not alter attention to food. These findings contribute to researchers' understanding of the cognitive factors underlying food addiction.


Asunto(s)
Regulación del Apetito , Sesgo Atencional , Depresión/etiología , Carbohidratos de la Dieta/efectos adversos , Trastornos de Alimentación y de la Ingestión de Alimentos/psicología , Preferencias Alimentarias , Hiperfagia/psicología , Adolescente , Adulto , Índice de Masa Corporal , Canadá , Dieta Saludable , Ajuste Emocional , Trastornos de Alimentación y de la Ingestión de Alimentos/fisiopatología , Femenino , Preferencias Alimentarias/psicología , Humanos , Hiperfagia/fisiopatología , Sobrepeso/etiología , Estimulación Luminosa , Escalas de Valoración Psiquiátrica , Factores de Tiempo , Adulto Joven
4.
Appetite ; 91: 233-40, 2015 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-25888073

RESUMEN

Individuals with eating disorders often exhibit food-related biases in attention tasks. To assess the engagement and maintenance of attention to food in adults with binge eating, in the present study, eye gaze tracking was used to compare fixations to food among non-clinical adults with versus without binge eating while they viewed images of real-world scenes. Fifty-seven participants' eye fixations were tracked and recorded throughout 8-second presentations of scenes containing high-calorie and/or low-caloriefood items in various settings (restaurants, social gatherings, etc.). Participants with binge eating fixated on both high-calorie and low-calorie food items significantly more than controls, and this was the case when the high- and low-calorie food items were presented in the same image and in different images. Participants with binge eating also fixated on food items significantly earlier in the presentations. A time course analysis that divided each 8-second presentation into 2-second intervals revealed that participants with binge eating attended to food items more than control participants throughout the 8-second presentation. These results have implications for theory regarding the initiation and maintenance of binge eating.


Asunto(s)
Atención , Trastorno por Atracón , Bulimia , Ingestión de Energía , Alimentos , Percepción Visual , Adolescente , Adulto , Trastorno por Atracón/fisiopatología , Trastorno por Atracón/psicología , Bulimia/fisiopatología , Bulimia/psicología , Ingestión de Alimentos , Femenino , Fijación Ocular , Humanos , Masculino , Adulto Joven
5.
PLoS One ; 18(12): e0295995, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-38109367

RESUMEN

Research has found that humour styles can moderate the relationship between various facets of mental health and well-being. Most of these studies have used college student samples, however, and the generalizability of these findings has not been firmly established. This study examined how humour styles moderate the relationship between hopelessness and suicide ideation in both student and community samples. Community participants from the U.S. and Canada (n = 554) and student participants from a Canadian university (n = 208) completed several self-report measures including the Humor Styles Questionnaire. Analyses revealed differences in humour styles between the samples, as well as differences in humour styles between men and women. Regression analyses showed that self-defeating humour moderated the relationship between hopelessness and suicide ideation for student participants but not for community participants. Conversely, self-enhancing humour moderated the relationship between hopelessness and suicide ideation for community participants but not for student participants. These results suggest that high levels of self-defeating humour and self-enhancing humour may be uniquely maladaptive for these respective samples. These and other findings point to the necessity of recruiting diverse samples to better understand the beneficial and detrimental associations between humour styles and mental health. The potential to use measures of humour style as a tool to help identify at-risk individuals and to inform the development of intervention programs is discussed.


Asunto(s)
Autoimagen , Ideación Suicida , Masculino , Humanos , Femenino , Canadá , Afecto , Estudiantes , Factores de Riesgo
6.
Addict Behav ; 139: 107575, 2023 04.
Artículo en Inglés | MEDLINE | ID: mdl-36528963

RESUMEN

Attentional biases for gambling-related stimuli are a robust correlate of problem gambling. Free-viewing eye-tracking paradigms are considered the gold standard for measuring attentional bias in addiction research, but their reliability in measuring biases for gambling-related stimuli remains unclear. Using secondary data from two different free-viewing eye-tracking paradigms (two-image and four-image displays), this study examined the internal consistency of fixation indices in samples with varying degrees of gambling involvement and problem gambling risk. Cronbach's alpha, McDonald's omega, and split-half reliability coefficients were used to assess internal consistency of several fixation indices (total dwell time, total dwell time percent, total fixation count, time of first fixation) for gambling-related images, neutral images, and computed attentional bias difference scores. For both two- and four-image displays, internal consistency estimates for total dwell time, total dwell time percent, and total fixation count were good to excellent for gambling-related images, neutral images, and attentional bias scores. Only time of first fixation exhibited low internal consistency. These findings indicate that both two-image and four-image free-viewing eye-tracking paradigms can reliably measure attentional biases for gambling-related stimuli among participants reporting varying degrees of gambling involvement and problem gambling risk.


Asunto(s)
Sesgo Atencional , Conducta Adictiva , Juego de Azar , Humanos , Reproducibilidad de los Resultados , Tecnología de Seguimiento Ocular
7.
J Consult Clin Psychol ; 90(12): 911-924, 2022 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-36395030

RESUMEN

OBJECTIVE: This cluster randomized controlled trial evaluated the efficacy of participation in the Body Project-a cognitive-dissonance-based preventive intervention that reduces self-reported body dissatisfaction-for reducing body-dissatisfaction-related attentional biases. We hypothesized that women in a Body Project condition would show a greater reduction in attentional biases to weight-related images and words at postintervention than women in a wait-list control condition. METHOD: Body-dissatisfied university women (N = 168; Mage = 20.50 ± 3.37 years; 42.0% White; MBMI = 23.08 ± 4.45 kg/m²) were randomly assigned to a Body Project, media psychoeducation (i.e., active control), or wait-list control condition. We assessed attentional biases via eye-gaze tracking and body satisfaction using the Body Shape Questionnaire, at baseline and postintervention. RESULTS: Self-reported outcomes from previous literature were replicated. Compared to wait-list, Body Project participation reduced attention to images of thin models (ps < .05; ds = .19, .24), but not to weight-related words. Compared to wait-list, the media psychoeducation condition reduced attention to fat-related images and words (ds = .17, .18). CONCLUSIONS: This study, which replicates previous self-report findings, is the first to find that two preventive interventions reduced an objective outcome (attentional bias to weight-related images) in body-dissatisfied women. (PsycInfo Database Record (c) 2023 APA, all rights reserved).


Asunto(s)
Sesgo Atencional , Insatisfacción Corporal , Trastornos de Alimentación y de la Ingestión de Alimentos , Femenino , Humanos , Adolescente , Adulto Joven , Adulto , Imagen Corporal , Universidades , Trastornos de Alimentación y de la Ingestión de Alimentos/prevención & control
8.
J Behav Addict ; 11(2): 386-395, 2022 Jul 13.
Artículo en Inglés | MEDLINE | ID: mdl-35895477

RESUMEN

Background and aims: Attentional bias to gambling-related stimuli is associated with increased severity of gambling disorder. However, the addiction-related moderators of attentional bias among those who gamble are largely unknown. Impulsivity is associated with attentional bias among those who abuse substances, and we hypothesized that impulsivity would moderate the relationship between disordered electronic gaming machine (EGM) gambling and attentional bias. Methods: We tested whether facets of impulsivity, as measured by the UPPS-P (positive urgency, negative urgency, sensation seeking, lack of perseverance, lack of premeditation) and the Barratt Impulsiveness Scale-11 (cognitive, motor, non-planning) moderated the relationship between increased severity of gambling disorder, as measured by the Problem Gambling Severity Index (PGSI), and attentional bias. Seventy-five EGM players participated in a free-viewing eye-tracking paradigm to measure attentional bias to EGM images. Results: Attentional bias was significantly correlated with Barratt Impulsiveness Scale-11 (BIS-11) motor, positive urgency, and negative urgency. Only positive and negative urgency moderated the relationship between PGSI scores and attentional bias. For participants with high PGSI scores, higher positive and negative urgency were associated with larger attentional biases to EGM stimuli. Discussion: The results indicate that affective impulsivity is an important contributor to the association between gambling disorder and attentional bias.


Asunto(s)
Sesgo Atencional , Juego de Azar , Juegos de Video , Electrónica , Juego de Azar/psicología , Humanos , Conducta Impulsiva
9.
Psychol Addict Behav ; 35(8): 961-973, 2021 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-33749291

RESUMEN

Objective: Attentional biases (ABs) have been shown to develop in the context of substance use disorders. Relatively less focus has been paid toward the development of ABs in behavioral addictions such as gambling disorder (GD). Furthermore, the psychological predictors and moderators of AB in GD remain unknown. The present study addressed these empirical gaps. Methods: Fifty-two non-GD electronic gaming machine (EGM) players, 25 GD-EGM players, and 61 non-gamblers completed measures of gambling-related behaviors and cognitions (problem gambling severity, cravings, expectancies, motives) and substance use and mental health (alcohol use severity, depression symptoms). The relationships between these constructs and AB for EGM images were then assessed using a free-viewing eye-tracking paradigm. Results: Non-GD EGM players and GD-EGM players attended to EGM images significantly more than neutral images (with the largest AB for the EGM players with GD). For all EGM players, gambling expectancies regarding the negative emotional impact of gambling and alcohol use severity were associated with greater AB. For non-GD EGM players only, AB was moderated by the anticipation aspect of gambling craving and the self-enhancement aspect of gambling expectancies. Conclusion: The results provide further evidence that ABs develop in the context of excessive gambling and are associated with gambling and psychological variables. The findings support the incentive-salience theory of ABs in gambling and provide a rationale for the development of AB modification programs in the treatment of gambling disorder. Given the predominantly white sample, our results may not generalize to individuals of other ethnicities. (PsycInfo Database Record (c) 2021 APA, all rights reserved).


Asunto(s)
Sesgo Atencional , Conducta Adictiva , Juego de Azar , Juegos de Video , Electrónica , Humanos
10.
Cognition ; 106(1): 433-43, 2008 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-17258186

RESUMEN

We examined the effects of sensorimotor experience in two visual word recognition tasks. Body-object interaction (BOI) ratings were collected for a large set of words. These ratings assess perceptions of the ease with which a human body can physically interact with a word's referent. A set of high BOI words (e.g., mask) and a set of low BOI words (e.g., ship) were created, matched on imageability and concreteness. Facilitatory BOI effects were observed in lexical decision and phonological lexical decision tasks: responses were faster for high BOI words than for low BOI words. We discuss how our findings may be accounted for by (a) semantic feedback within the visual word recognition system, and (b) an embodied view of cognition (e.g., Barsalou's perceptual symbol systems theory), which proposes that semantic knowledge is grounded in sensorimotor interactions with the environment.


Asunto(s)
Atención , Imaginación , Recuerdo Mental , Reconocimiento Visual de Modelos , Lectura , Semántica , Aprendizaje Verbal , Aprendizaje por Asociación , Humanos , Desempeño Psicomotor
11.
J Exp Psychol Hum Percept Perform ; 34(5): 1236-60, 2008 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-18823208

RESUMEN

In models of visual word identification that incorporate inhibitory competition among activated lexical units, a word's higher frequency neighbors will be the word's strongest competitors. Preactivation of these neighbors by a prime is predicted to delay the word's identification. Using the masked priming paradigm (K. I. Forster & C. Davis, 1984, J. Segui and J. Grainger (1990) reported that, consistent with this prediction, a higher frequency neighbor prime delayed the responses to a lower frequency target, whereas a lower frequency neighbor prime did not delay the responses to a higher frequency target. In the present experiments, using English stimuli, it was found that this pattern held only when the primes and targets had few neighbors; when the primes and targets had many neighbors, lower frequency primes delayed responses to higher frequency targets essentially as much as higher frequency primes delayed responses to lower frequency targets. Several possible explanations for these findings are discussed along with their theoretical implications. Considered together, the results are most consistent with activation-based accounts of the masked priming effect.


Asunto(s)
Inhibición Psicológica , Reconocimiento Visual de Modelos , Humanos , Modelos Psicológicos , Enmascaramiento Perceptual , Tiempo de Reacción , Disposición en Psicología
12.
Cogn Sci ; 32(3): 591-605, 2008 Apr 05.
Artículo en Inglés | MEDLINE | ID: mdl-21635348

RESUMEN

This article examined the effects of body-object interaction (BOI) on semantic processing. BOI measures perceptions of the ease with which a human body can physically interact with a word's referent. In Experiment 1, BOI effects were examined in 2 semantic categorization tasks (SCT) in which participants decided if words are easily imageable. Responses were faster and more accurate for high BOI words (e.g., mask) than for low BOI words (e.g., ship). In Experiment 2, BOI effects were examined in a semantic lexical decision task (SLDT), which taps both semantic feedback and semantic processing. The BOI effect was larger in the SLDT than in the SCT, suggesting that BOI facilitates both semantic feedback and semantic processing. The findings are consistent with the embodied cognition perspective (e.g., Barsalou's, 1999, Perceptual Symbols Theory), which proposes that sensorimotor interactions with the environment are incorporated in semantic knowledge.

13.
PLoS One ; 13(1): e0190614, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-29385164

RESUMEN

A growing body of research indicates that gamblers develop an attentional bias for gambling-related stimuli. Compared to research on substance use, however, few studies have examined attentional biases in gamblers using eye-gaze tracking, which has many advantages over other measures of attention. In addition, previous studies of attentional biases in gamblers have not directly matched type of gambler with personally-relevant gambling cues. The present study investigated the specificity of attentional biases for individual types of gambling using an eye-gaze tracking paradigm. Three groups of participants (poker players, video lottery terminal/slot machine players, and non-gambling controls) took part in one test session in which they viewed 25 sets of four images (poker, VLTs/slot machines, bingo, and board games). Participants' eye fixations were recorded throughout each 8-second presentation of the four images. The results indicated that, as predicted, the two gambling groups preferentially attended to their primary form of gambling, whereas control participants attended to board games more than gambling images. The findings have clinical implications for the treatment of individuals with gambling disorder. Understanding the importance of personally-salient gambling cues will inform the development of effective attentional bias modification treatments for problem gamblers.


Asunto(s)
Atención , Movimientos Oculares , Juego de Azar , Adulto , Estudios de Casos y Controles , Humanos , Masculino , Adulto Joven
14.
PLoS One ; 13(2): e0192914, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-29447251

RESUMEN

Understanding the cognitive processes underlying body dissatisfaction provides important information on the development and perpetuation of eating pathology. Previous research suggests that body-dissatisfied women process weight-related information differently than body-satisfied women, but the precise nature of these processing differences is not yet understood. In this study, eye-gaze tracking was used to measure attention to weight-related words in body-dissatisfied (n = 40) and body-satisfied (n = 38) women, before and after exposure to images of thin fashion models. Participants viewed 8-second displays containing fat-related, thin-related, and neutral words while their eye fixations were tracked and recorded. Based on previous research and theory, we predicted that body-dissatisfied women would attend to fat-related words more than body-satisfied women and would attend to thin-related words less. It was also predicted that exposure to thin model images would increase self-rated body dissatisfaction and heighten group differences in attention. The results indicated that body-dissatisfied women attended to both fat- and thin-related words more than body-satisfied women and that exposure to thin models did not increase this effect. Implications for cognitive models of eating disorders are discussed.


Asunto(s)
Atención , Imagen Corporal/psicología , Satisfacción Personal , Psicolingüística , Percepción Social , Percepción Visual , Medidas del Movimiento Ocular , Femenino , Fijación Ocular , Humanos , Pruebas Psicológicas , Lectura , Memoria Implícita , Encuestas y Cuestionarios , Adulto Joven
15.
Can J Exp Psychol ; 61(4): 322-7, 2007 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-18266508

RESUMEN

This experiment examined how the characteristics of homophones and their mates influence homophone effects, as a function of task demands. Two types of homophones were presented: 1) low-frequency homophones with higher-frequency mates that are not animal names (e.g., maid--made), and 2) low-frequency homophones with mates that are, on average, of equivalent frequency and are animal names (e.g., foul--fowl). We observed a double dissociation: In the lexical decision task (LDT), there was a homophone effect for the first type of homophones but not for the second, whereas in the semantic categorization task (SCT) the opposite was true. These results suggest that in these tasks the effects of homophony arise when the homophone's mate creates competition in terms of the type of processing emphasized in the task, namely, orthographic processing in the LDT and semantic processing in the SCT.


Asunto(s)
Atención , Aprendizaje por Asociación de Pares , Fonética , Lectura , Semántica , Formación de Concepto , Humanos , Psicolingüística , Tiempo de Reacción
16.
J Exp Psychol Hum Percept Perform ; 32(4): 1040-62, 2006 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-16846296

RESUMEN

What is the effect of a word's higher frequency neighbors on its identification time? According to activation-based models of word identification (J. Grainger & A. M. Jacobs, 1996; J. L. McClelland & D. E. Rumelhart, 1981), words with higher frequency neighbors will be processed more slowly than words without higher frequency neighbors because of the lexical competition mechanism embodied in these models. Although a critical prediction of these models, this inhibitory neighborhood frequency effect has been elusive in studies that have used English stimuli. In the present experiments, the effect of higher frequency neighbors was examined in the lexical decision task and when participants were reading sentences while their eye movements were monitored. Results suggest that higher frequency neighbors have little, if any, effect on the identification of English words. The implications for activation-based models of word identification are discussed.


Asunto(s)
Atención , Lenguaje , Lectura , Semántica , Toma de Decisiones , Humanos , Inhibición Psicológica , Orientación , Tiempo de Reacción
17.
Artículo en Inglés | MEDLINE | ID: mdl-24801737

RESUMEN

Two experiments used the progressive demasking (PD) task to examine age differences in the ability to inhibit higher frequency competitors during the process of identifying a visually degraded word. In Experiment 1, older adults exhibited a larger inhibitory neighborhood frequency effect (i.e., slower identification of words with many higher frequency competitors) than younger adults, but additional analyses indicated that this difference could be explained by general slowing rather than a deficit in inhibitory abilities. In Experiment 2, a primed version of the PD task was used to promote hypothesis testing by semantically priming the target word (e.g., cry-weep) or a higher frequency competitor of the target (e.g, day-weep) prior to the onset of the demasking sequence. Although older adults were more likely to make identification errors consistent with an inhibitory deficit (e.g., identifying weep as week), these errors were infrequent overall and there was no corresponding evidence of a larger interference effect in the older adults' identification latencies. Taken together, performance in these two tasks provides little evidence of reduced inhibitory functioning in older adults. The implications for the inhibitory deficit hypothesis of cognitive aging and directions for future are discussed.


Asunto(s)
Envejecimiento/psicología , Inhibición Psicológica , Memoria a Corto Plazo , Enmascaramiento Perceptual , Percepción Visual , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Humanos , Persona de Mediana Edad , Lectura , Semántica , Adulto Joven
18.
J Exp Psychol Hum Percept Perform ; 28(3): 661-81, 2002 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-12075895

RESUMEN

The effects of large neighborhoods (neighborhood size) and of higher frequency neighbors (neighborhood frequency) were examined as a function of nonword neighborhood size in lexical decision tasks. According to the multiple read-out model (J. Grainger & A. M. Jacobs, 1996), neighborhood size and neighborhood frequency effects should vary systematically as a function of nonword neighborhood size. In these experiments, the nonword context was more extensively manipulated than in previous studies, providing a more complete test of the model's predictions. In addition, simulations were conducted examining the model's ability to account for the facilitatory neighborhood size and neighborhood frequency effects observed in these experiments. The results suggest that the model overestimates the role of inhibition in the orthographic processing of English words.


Asunto(s)
Atención , Toma de Decisiones , Lectura , Adulto , Femenino , Humanos , Masculino , Tiempo de Reacción , Semántica
19.
J Exp Psychol Hum Percept Perform ; 40(2): 813-40, 2014 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-24364705

RESUMEN

In the masked priming paradigm, when a word target is primed by a higher frequency neighbor (e.g., blue-BLUR), lexical decision latencies are slower than when the same word is primed by an unrelated word of equivalent frequency (e.g., care-BLUR). This inhibitory neighbor priming effect (e.g., Davis & Lupker, 2006; Segui & Grainger, 1990) is taken as evidence for the lexical competition process that is an important component of localist activation-based models of visual word recognition (Davis, 2003; Grainger & Jacobs, 1996; McClelland & Rumelhart, 1981). The present research looked for evidence of an inhibitory neighbor priming effect using words written in Japanese Kanji, a logographic, nonalphabetic script. In 4 experiments (Experiments 1A, 1B, 3A, and 3B), inhibitory neighbor priming effects were observed for low-frequency targets primed by higher frequency Kanji word neighbors ([symbol in text]). In contrast, there was a significant facilitation effect when targets were primed by Kanji nonword neighbors ([symbols in text]; Experiments 2 and 3). Significant facilitation was also observed when targets were primed by single constituent Kanji characters ([symbols in text]; Experiment 4). Taken together, these results suggest that lexical competition plays a role in the recognition of Kanji words, just as it does for words in alphabetic languages. However, in Kanji, and likely in other logographic languages, the effect of lexical competition appears to be counteracted by facilitory morphological priming due to the repetition of a morphological unit in the prime and target (i.e., in Kanji, each character represents a morpheme).


Asunto(s)
Inhibición Psicológica , Reconocimiento Visual de Modelos/fisiología , Enmascaramiento Perceptual/fisiología , Lectura , Memoria Implícita/fisiología , Adulto , Humanos , Adulto Joven
20.
J Anxiety Disord ; 27(5): 447-55, 2013 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-23845453

RESUMEN

Attention to general and trauma-relevant threat was examined in individuals with clinical and subthreshold symptoms of post-traumatic stress disorder (PTSD). Participants' eye gaze was tracked and recorded while they viewed sets of four images over a 6-s presentation (one negative, positive, and neutral image, and either a general threat image or a trauma-relevant threat image). Two trauma-exposed groups (a clinical and a subthreshold PTSD symptom group) were compared to a non-trauma-exposed group. Both the clinical and subthreshold PTSD symptom groups attended to trauma-relevant threat images more than the no-trauma-exposure group, whereas there were no group differences for general threat images. A time course analysis of attention to trauma-relevant threat images revealed different attentional profiles for the trauma-exposed groups. Participants with clinical PTSD symptoms exhibited immediate heightened attention to the images relative to participants with no-trauma-exposure, whereas participants with subthreshold PTSD symptoms did not. In addition, participants with subthreshold PTSD symptoms attended to trauma-relevant threat images throughout the 6-s presentation, whereas participants with clinical symptoms of PTSD exhibited evidence of avoidance. The theoretical and clinical implications of these distinct attentional profiles are discussed.


Asunto(s)
Atención/fisiología , Fijación Ocular/fisiología , Trastornos por Estrés Postraumático/epidemiología , Trastornos por Estrés Postraumático/fisiopatología , Percepción Visual/fisiología , Estudios de Casos y Controles , Femenino , Humanos , Masculino , Psicometría , Adulto Joven
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