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1.
J Am Coll Health ; : 1-7, 2024 Sep 20.
Artigo em Inglês | MEDLINE | ID: mdl-39302240

RESUMO

Objectives: We assessed the prevalence of loneliness by gender and gender-specific associations between loneliness and substance use in university students. Participants: Participants were students enrolled in colleges and universities throughout the United States (n = 84,481). Methods: Gender was self-reported and categorized as male, female, and transgender/nonbinary. Descriptive analyses were conducted, and logistic regression was used to measure associations between loneliness and substance use by gender and substance. Results: Loneliness prevalence was 58% in the sample, and loneliness was most prevalent among transgender/nonbinary students (79%). Loneliness was associated with reduced odds of alcohol use and increased odds of benzodiazepine use in all genders, and increased odds of marijuana, stimulant, and opioid misuse in females and males. Conclusions: Loneliness is prevalent in college students, especially in transgender/nonbinary students, and it is associated with increased odds of substance use. College administrators should consider implementing interventions to reduce loneliness in this population.

2.
Artigo em Inglês | MEDLINE | ID: mdl-39348824

RESUMO

OBJECTIVE: Although elevated social anxiety in developmental prosopagnosia (DP) has been reported in anecdotal and qualitative studies, the current study sought to better quantify the prevalence, severity, and moderators of social anxiety in a large DP sample. METHOD: A total of 88 DPs and 58 controls completed the validated Social Interaction Anxiety Scale and assessments of face recognition, autism traits, personality (Big Five Inventory), and coping strategies. RESULTS: DPs reported greater social anxiety symptoms (M = 30.25) than controls (M = 17.19), with 44% of DPs above a probable clinical cutoff compared with 14% of controls. Exploratory analyses revealed that DPs' social anxiety was more specific to items pertaining to mixing socially or interacting with unfamiliar people. Notably, several DPs reported minimal social anxiety, which was associated with being more extraverted and having fewer autism traits. A follow-up survey revealed that extraverted DPs more openly disclosed face recognition inabilities than introverted DPs, which may be a factor in their reduced social anxiety. CONCLUSION: These results better quantify the potential serious psychosocial consequences of DP and highlight the importance of individual differences as well as targeted intervention.

3.
Cortex ; 176: 37-52, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38744075

RESUMO

Developmental prosopagnosia (DP) is associated with considerable perceptual heterogeneity, though the nature of this heterogeneity and whether there are discrete subgroups versus continuous deficits remains unclear. Bennetts et al. (2022) recently found that holistic versus featural processing deficits distinguished discrete DP subgroups, but their sample was relatively small (N = 37), and subgroups were defined using a single task. To characterize perceptual heterogeneity in DPs more comprehensively, we administered a broad face perception battery to a large sample of 109 DPs and 134 controls, including validated measures of face matching (Cambridge Face Perception Test - CFPT, Computerized Benton Facial Recognition Test, Same/Different Face Matching Task), holistic processing (Part-Whole Task), and feature processing (Georges Task and Part-Whole part trials). When examining face matching measures, DPs exhibited a similar distribution of performance as controls, though shifted towards impairment by an average of 1.4 SD. We next applied Bennetts (2022) hierarchical clustering approach and k-means clustering to the CFPT upright, inverted, and inversion index measures, similarly finding one group of DPs with poorer inverted face performance and another with a decreased face inversion effect (holistic processing). However, these subgroup differences failed to generalize to other measures of feature and holistic processing beyond the CFPT. We finally ran hierarchical and k-means cluster analyses on our larger battery of face matching, feature, and holistic processing measures. Results clearly showed subgroups with generally better versus worse performance across all measures, with the distinction between groups being somewhat arbitrary. Together, these findings support a continuous account of DP perceptual heterogeneity, with performance differing primarily across all aspects of face perception.


Assuntos
Reconhecimento Facial , Prosopagnosia , Humanos , Prosopagnosia/fisiopatologia , Feminino , Masculino , Adulto , Reconhecimento Facial/fisiologia , Pessoa de Meia-Idade , Adulto Jovem , Testes Neuropsicológicos , Reconhecimento Psicológico/fisiologia , Reconhecimento Visual de Modelos/fisiologia , Percepção Visual/fisiologia , Adolescente
4.
Neuropsychology ; 37(8): 907-922, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37326535

RESUMO

OBJECTIVE: Posttraumatic stress disorder (PTSD) is associated with significant disability and can become chronic. Predictors of PTSD symptom changes over time, especially in those with a PTSD diagnosis, remain incompletely characterized. METHOD: In the present study, we examined 187 post-9/11 veterans (Mage = 32.8 years, 87% male) diagnosed with PTSD who performed two extensive clinical and cognitive evaluations approximately 2 years apart. RESULTS: We found that greater PTSD symptom reductions over time were related to lower lifetime drinking history and better baseline inhibitory control ability (Color-Word Inhibition and Inhibition/Switching), though not performance on other executive function tasks. Further, groups with reliably Improved, Worsened, or Chronic PTSD symptoms demonstrated significant differences in baseline inhibitory control and lifetime drinking history, with marked drinking differences starting in the early-to-mid 20s. We also found that PTSD symptom changes showed little-to-no associations with changes in inhibitory control or alcohol consumption. CONCLUSIONS: Together, these findings suggest that, in those diagnosed with PTSD, inhibitory control and alcohol use history reflect relatively stable risk/resiliency factors predictive of PTSD chronicity. (PsycInfo Database Record (c) 2023 APA, all rights reserved).


Assuntos
Transtornos de Estresse Pós-Traumáticos , Veteranos , Humanos , Masculino , Adulto , Feminino , Transtornos de Estresse Pós-Traumáticos/complicações , Veteranos/psicologia , Função Executiva
5.
J Affect Disord ; 335: 24-35, 2023 08 15.
Artigo em Inglês | MEDLINE | ID: mdl-37086805

RESUMO

Functional neuroimaging has the potential to help identify those at risk for self-injurious thoughts and behaviors, as well as inform neurobiological mechanisms that contribute to suicide. Based on whole-brain patterns of functional connectivity, our previous work identified right amygdala and right middle temporal gyrus (MTG) connectivity patterns that differentiated Veterans with a history of a suicide attempt (SA) from a Veteran control group. In this study, we aimed to replicate and extend our previous findings by examining whether this aberrant connectivity was present prior to and after a SA. In a trauma-exposed Veteran sample (92 % male, mean age = 34), we characterized if the right amygdala and right MTG connectivity differed between a psychiatric control sample (n = 56) and an independent sample of Veterans with a history of SA (n = 17), using fMRI data before and after the SA. Right MTG and amygdala connectivity differed between Veterans with and without a history of SA (replication), while MTG connectivity also distinguished Veterans prior to engaging in a SA (extension). In a second study, neither MTG or amygdala connectivity differed between those with current suicidal ideation (n = 27) relative to matched psychiatric controls (n = 27). These results indicate a potential stable marker of suicide risk (right MTG connectivity) as well as a potential marker of acute risk of or recent SA (right amygdala connectivity) that are independent of current ideation.


Assuntos
Tonsila do Cerebelo , Tentativa de Suicídio , Humanos , Masculino , Adulto , Feminino , Tentativa de Suicídio/psicologia , Tonsila do Cerebelo/diagnóstico por imagem , Lobo Temporal/diagnóstico por imagem , Encéfalo , Ideação Suicida , Imageamento por Ressonância Magnética/métodos
6.
Cortex ; 161: 51-64, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-36905701

RESUMO

The prevalence of developmental prosopagnosia (DP), lifelong face recognition deficits, is widely reported to be 2-2.5%. However, DP has been diagnosed in different ways across studies, resulting in differing prevalence rates. In the current investigation, we estimated the range of DP prevalence by administering well-validated objective and subjective face recognition measures to an unselected web-based sample of 3116 18-55 year-olds and applying DP diagnostic cutoffs from the last 14 years. We found estimated prevalence rates ranged from .64-5.42% when using a z-score approach and .13-2.95% when using a percentile approach, with the most commonly used cutoffs by researchers having a prevalence rate of .93% (z-score, .45% when using percentiles). We next used multiple cluster analyses to examine whether there was a natural grouping of poorer face recognizers but failed to find consistent grouping beyond those with generally above versus below average face recognition. Lastly, we investigated whether DP studies with more relaxed diagnostic cutoffs were associated with better performance on the Cambridge Face Perception Test. In a sample of 43 studies, there was a weak nonsignificant association between greater diagnostic strictness and better DP face perception accuracy (Kendall's tau-b correlation, τb =.18 z-score; τb = .11 percentiles). Together, these results suggest that researchers have used more conservative DP diagnostic cutoffs than the widely reported 2-2.5% prevalence. We discuss the strengths and weaknesses of using more inclusive cutoffs, such as identifying mild and major forms of DP based on DSM-5.


Assuntos
Reconhecimento Facial , Prosopagnosia , Humanos , Prosopagnosia/diagnóstico , Prosopagnosia/epidemiologia , Prosopagnosia/complicações , Prevalência , Reconhecimento Psicológico , Análise por Conglomerados , Reconhecimento Visual de Modelos
7.
Arch Clin Neuropsychol ; 38(6): 944-961, 2023 Aug 24.
Artigo em Inglês | MEDLINE | ID: mdl-36781401

RESUMO

OBJECTIVE: Post-9/11 Veterans endorse greater self-reported functional disability than 80% of the adult population. Previous studies of trauma-exposed populations have shown that increased post-traumatic stress disorder (PTSD) and depressive symptoms are consistently associated with greater disability. Additionally, poorer cognitive performance in the domain of executive functions, particularly inhibitory control, has been associated with disability, though it is unclear if this effect is independent of and/or interacts with PTSD and depression. METHOD: Three overlapping samples of n = 582, 297, and 183 combat-deployed post-9/11 Veterans completed comprehensive assessments of executive functions, PTSD and depressive symptoms, and self-reported World Health Organization Disability Assessment Schedule-II (WHODAS II). RESULTS: Poorer performance on measures of inhibitory control (Delis-Kaplan Executive Functioning System Color-Word Interference-CWI Test and gradual-onset Continuous Performance Test-gradCPT), but not other executive functions, were significantly associated with greater disability on the WHODAS II (ρ's = -.13 and -.13, p = .002 and .026, respectively). CWI inhibitory control measures accounted for unique variance in disability after controlling for PTSD and depressive symptoms (R2 change = 0.02, p < .001). Further, CWI significantly moderated the effect of depressive symptoms on disability, such that better inhibitory control weakened the relationship between depression and disability. CONCLUSIONS: Inhibitory control deficits are uniquely associated with increased disability in combat-deployed post-9/11 Veterans, and better inhibitory control abilities may serve as a protective factor for depressive symptoms leading to increased disability.


Assuntos
Transtornos de Estresse Pós-Traumáticos , Veteranos , Adulto , Humanos , Veteranos/psicologia , Testes Neuropsicológicos , Transtornos de Estresse Pós-Traumáticos/diagnóstico , Função Executiva , Avaliação da Deficiência
8.
J Autism Dev Disord ; 53(12): 4787-4808, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-36173532

RESUMO

Autism traits are common exclusionary criteria in developmental prosopagnosia (DP) studies. We investigated whether autism traits produce qualitatively different face processing in 43 DPs with high vs. low autism quotient (AQ) scores. Compared to controls (n = 27), face memory and perception were similarly deficient in the high- and low-AQ DPs, with the high-AQ DP group additionally showing deficient face emotion recognition. Task-based fMRI revealed reduced occipito-temporal face selectivity in both groups, with high-AQ DPs additionally demonstrating decreased posterior superior temporal sulcus selectivity. Resting-state fMRI showed similar reduced face-selective network connectivity in both DP groups compared with controls. Together, this demonstrates that high- and low-AQ DP groups have very similar face processing deficits, with additional facial emotion deficits in high-AQ DPs.


Assuntos
Transtorno do Espectro Autista , Transtorno Autístico , Reconhecimento Facial , Prosopagnosia , Humanos , Prosopagnosia/psicologia , Transtorno Autístico/diagnóstico por imagem , Transtorno do Espectro Autista/diagnóstico por imagem , Imageamento por Ressonância Magnética , Reconhecimento Visual de Modelos
9.
Cogn Affect Behav Neurosci ; 23(1): 42-65, 2023 02.
Artigo em Inglês | MEDLINE | ID: mdl-36127489

RESUMO

Social avoidance behavior (SAB) produces impairment in multiple domains and contributes to the development and maintenance of several psychiatric disorders. Social behaviors such as SAB are influenced by approach-avoidance (AA) motivational responses to affective facial expressions. Notably, affective facial expressions communicate varying degrees of social reward signals (happiness), social threat signals (anger), or social reward-threat conflict signals (co-occurring happiness and anger). SAB is associated with dysregulated modulation of automatic approach-avoidance (AA) motivational responses exclusively to social reward-threat conflict signals. However, no neuroimaging research has characterized SAB-related modulation of automatic and subjective AA motivational responses to social reward-threat conflict signals. We recruited 30 adults reporting clinical, moderate, or minimal SAB based on questionnaire cutoff scores. SAB groups were matched on age range and gender. During fMRI scanning, participants completed implicit and subjective approach-avoidance tasks (AATs), which involved more incidental or more explicit evaluation of facial expressions that parametrically varied in social reward signals (e.g., 50%Happy), social threat signals (e.g., 50%Angry), or social reward-threat conflict signals (e.g., 50%Happy + 50%Angry). In the implicit AAT, SAB was associated with slower automatic avoidance actions and weaker amygdala-pgACC connectivity exclusively as a function of social reward-threat conflict signals. In the subjective AAT, SAB was associated with smaller increases in approach ratings, smaller decreases in avoidance ratings, and weaker dlPFC-pgACC connectivity exclusively in response to social reward-threat conflict signals. Thus, SAB is associated with dysregulated modulation of automatic and subjective AA motivational sensitivity to social reward-threat conflict signals, which may be facilitated by overlapping neural systems.


Assuntos
Aprendizagem da Esquiva , Imageamento por Ressonância Magnética , Adulto , Humanos , Comportamento Social , Ira , Recompensa , Expressão Facial
10.
Neuroimage Clin ; 36: 103146, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36055063

RESUMO

Posttraumatic Stress Disorder (PTSD) symptomatology is associated with dysregulated sustained attention, which produces functional impairments. Performance on sustained attention paradigms such as continuous performance tasks are influenced by both the ability to sustain attention and response strategy. However, previous studies have not dissociated PTSD-related associations with sustained attention ability and strategy, which limits characterization of neural circuitry underlying PTSD-related attentional impairments. Therefore, we characterized and replicated PTSD-related associations with sustained attention ability and response strategy in trauma-exposed Veterans, which guided characterization of PTSD-related differences in neural circuit function. In Study 1, PTSD symptoms were selectively associated with reduced sustained attention ability, but not more impulsive response strategies. In Study 2, we utilized task and resting-state fMRI to characterize neural circuitry underlying PTSD-related differences in sustained attention ability. Both PTSD symptomatology and sustained attention ability exhibited converging associations with reduced dorsal attention network (DAN) synchronization to endogeneous attentional fluctuations. Post-hoc time course analyses demonstrated that PTSD symptoms were most accurately characterized by delayed, rather than globally reduced, DAN synchronization to endogenous attentional fluctuations. Together, these findings suggest that PTSD symptomatology may selectively impair sustained attention ability by disrupting proactive engagement of attentional control circuitry.


Assuntos
Transtornos de Estresse Pós-Traumáticos , Veteranos , Humanos , Encéfalo , Imageamento por Ressonância Magnética , Testes Neuropsicológicos
11.
Transl Psychiatry ; 12(1): 262, 2022 06 27.
Artigo em Inglês | MEDLINE | ID: mdl-35760805

RESUMO

Previous work identified a cognitive subtype of PTSD with impaired executive function (i.e., impaired EF-PTSD subtype) and aberrant resting-state functional connectivity between frontal parietal control (FPCN) and limbic (LN) networks. To better characterize this cognitive subtype of PTSD, this study investigated (1) alterations in specific FPCN and LN subnetworks and (2) chronicity of PTSD symptoms. In a post-9/11 veteran sample (N = 368, 89% male), we identified EF subgroups using a standardized neuropsychological battery and a priori cutoffs for impaired, average, and above-average EF performance. Functional connectivity between two subnetworks of the FPCN and three subnetworks of the LN was assessed using resting-state fMRI (n = 314). PTSD chronicity over a 1-2-year period was assessed using a reliable change index (n = 175). The impaired EF-PTSD subtype had significantly reduced negative functional connectivity between the FPCN subnetwork involved in top-down control of emotion and two LN subnetworks involved in learning/memory and social/emotional processing. This impaired EF-PTSD subtype had relatively chronic PTSD, while those with above-average EF and PTSD displayed greater symptom reduction. Lastly, FPCN-LN subnetworks partially mediated the relationship between EF and PTSD chronicity (n = 121). This study reveals (1) that an impaired EF-PTSD subtype has a specific pattern of FPCN-LN subnetwork connectivity, (2) a novel above-average EF-PTSD subtype displays reduced PTSD chronicity, and (3) both cognitive and neural functioning predict PTSD chronicity. The results indicate a need to investigate how individuals with this impaired EF-PTSD subtype respond to treatment, and how they might benefit from personalized and novel approaches that target these neurocognitive systems.


Assuntos
Mapeamento Encefálico , Transtornos de Estresse Pós-Traumáticos , Função Executiva , Feminino , Humanos , Imageamento por Ressonância Magnética/métodos , Masculino , Vias Neurais/diagnóstico por imagem
12.
Cognit Ther Res ; 46(1): 146-160, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-35330671

RESUMO

Background: Attention bias to threat is a fundamental transdiagnostic component and potential vulnerability factor for internalizing psychopathologies. However, the measurement of attentional bias, such as traditional scores from the dot-probe paradigm, evidence poor reliability and do not measure intra-individual variation in attentional bias. Methods: The present study examined, in three independent samples, the psychometric properties of a novel attentional bias (AB) scoring method of the dot-probe task based on responses to individual trials. For six AB scores derived using the response-based approach, we assessed the internal consistency, test-retest reliability, familial associations, and external validity (using Social Anxiety Disorder, a disorder strongly associated with attentional bias to threatening faces). Results: Compared to traditional AB scores, response-based scores had generally better internal consistency (range of Cronbach's alphas: 0.68-0.92 vs. 0.41-0.71), higher test-retest reliabilities (range of Pearson's correlations: 0.26-0.77 vs. -0.05-0.35), and were more strongly related in family members (range of ICCs: 0.11-0.27 vs. 0-0.05). Furthermore, three response-based scores added incremental validity beyond traditional scores and gender in the external validators of current and lifetime Social Anxiety Disorder. Conclusions: Findings indicate that response-based AB scores from the dot-probe task have better psychometric properties than traditional scores.

13.
Cortex ; 145: 295-314, 2021 12.
Artigo em Inglês | MEDLINE | ID: mdl-34775266

RESUMO

Posttraumatic Stress Disorder (PTSD) symptomatology disrupts inhibitory control during sustained attention. However, PTSD-related inhibitory control deficits are partially ameliorated when punishments and rewards are administered based on task performance, which suggests motivational processes contribute to these deficits. Additionally, PTSD may also impair error-related cognitive control following inhibitory control failures as measured by post-error slowing (PES). However, it remains unclear if motivational processes also contribute to impaired error-related cognitive control in PTSD. Using an incentivized sustained attention paradigm in two independent samples of post-9/11 veterans, we characterized PTSD-related differences in PES during both non-motivated conditions (no task-based incentives) and motivated conditions (task-based rewards and punishments). In Study 1 (n = 139), PTSD symptom severity was modestly associated with smaller PES in the non-motivated condition, whereas no PTSD-related association was observed in the motivated condition. In Study 2 (n = 35), we replicated and extended these results by using fMRI to characterize modulation of the triple network system comprised of the Salience Network (SN), Frontoparietal Control Network (FPCN), and Default Mode Network (DMN). In the non-motivated condition, PTSD symptom severity was associated with non-specific SN and FPCN hyperactivation during both failed and successful inhibitory control. In the motivated condition, PTSD symptom severity was associated with greater focal activation of both the SN and Superior Parietal Lobule cluster (an FPCN node) during punished inhibitory control failures and weaker SN-FPCN connectivity during rewarded inhibitory control successes. Together, these results suggest that dysregulated motivational processes in PTSD may contribute to impaired error-related cognitive control.


Assuntos
Transtornos de Estresse Pós-Traumáticos , Encéfalo , Cognição , Humanos , Imageamento por Ressonância Magnética , Punição , Recompensa
14.
J Anxiety Disord ; 78: 102363, 2021 03.
Artigo em Inglês | MEDLINE | ID: mdl-33524700

RESUMO

Affective facial expressions elicit automatic approach or avoidance action tendencies, which are dysregulated in Social Anxiety Disorder (SAD). However, research has not dissociated the initiation and execution phases of automatic action tendencies, which may be distinctly modulated by affective faces and SAD. In Study 1, fifty adults completed a modified Approach-Avoidance Task (AAT) that characterized the time course of automatic approach or avoidance actions elicited by affective faces. In the initiation phase, happy faces elicited greater automatic approach tendencies compared to angry faces, an effect that linearly weakened across the execution phase. In Study 2, 44 adults with a principal diagnosis of SAD and 22 healthy comparison (HC) adults completed a similar AAT. Compared to the HC group, the SAD group exhibited an inconsistent time course of automatic action tendencies to neutral faces. Specifically, SAD was characterized by relatively weak initiation of automatic approach tendencies, but relatively stronger execution of automatic approach tendencies. In contrast, the HC group exhibited relatively similar initiation and execution of automatic approach tendencies to neutral faces. Together, these results demonstrate that the initiation and execution of automatic action tendencies are differentially modulated by affective faces and SAD.


Assuntos
Expressão Facial , Fobia Social , Adulto , Ira , Felicidade , Humanos
15.
J Affect Disord ; 283: 430-440, 2021 03 15.
Artigo em Inglês | MEDLINE | ID: mdl-33549365

RESUMO

BACKGROUND: Functional brain markers of suicidality can help identify at-risk individuals and uncover underlying neurocognitive mechanism(s). Although some converging evidence has implicated dysfunction in several brain networks, suicide-related neuroimaging markers are inconsistent across studies, due to heterogeneity of neuroimaging approaches, clinical populations, and experimental methods. METHODS: The current study aimed to address these limitations by examining resting-fMRI connectivity in a sample of post-9/11 veterans with a past suicide attempt (SA; n = 16) compared to a psychiatric control group (PC; n = 124) with no SA history but comparable past and present symptomatology, as well as a trauma control group (TC; n = 66) of trauma-exposed healthy controls. We used both a novel graph-analytic and seed-based approach to characterize SA-related connectivity differences across brain networks. RESULTS: First, the graph-analytic approach identified the right amygdala and a region in the cognitive control network (right middle temporal gyrus; MTG) as regional SA-related hubs of dysfunction (HoD), or regions that exhibited a high number of SA-related connections. Aberrant SA-related connectivity between these hubs spanned multiple networks, including the cognitive control, default mode and visual networks. Second, the seed-based connectivity analysis that identifies SA-related differences in the strength of neural connections across the whole brain further implicated the right amygdala. LIMITATIONS: Small sample size and potential underreporting of SA. CONCLUSIONS: These two analytic approaches preliminarily suggest that the right amygdala and right MTG may be specific neural markers of SA that can be differentiated from neural markers of psychopathology more broadly.


Assuntos
Conectoma , Encéfalo/diagnóstico por imagem , Mapeamento Encefálico , Humanos , Imageamento por Ressonância Magnética , Vias Neurais/diagnóstico por imagem , Descanso , Tentativa de Suicídio
16.
Cogn Emot ; 34(8): 1711-1720, 2020 12.
Artigo em Inglês | MEDLINE | ID: mdl-32633192

RESUMO

Social avoidance behaviour (SAB) significantly interferes with social engagement and characterises various psychopathologies. Dual-process models propose that social behaviour is directed in part by automatic action tendencies to approach or avoid social stimuli. For example, happy facial expressions often elicit automatic approach actions, whereas angry facial expressions often elicit automatic avoidance actions. When motivation to approach and avoid co-occurs, automatic action tendencies may be uniquely modulated to direct social behaviour. Although research has examined how psychopathology modulates automatic action tendencies, no research has examined how SAB modulates automatic action tendencies. To address this issue, one hundred and three adults (65 females, 20.72 ± 5.06 years) completed a modified approach-avoidance task (AAT) with ambiguous facial stimuli that parametrically varied in social reward (e.g. 50%Happy), social threat (e.g. 50%Angry), or social reward-threat conflict (e.g. 50%Happy/50%Angry). SAB was not associated with automatic actions to any single parametric variation of social reward and/or social threat. Instead, SAB was associated with a quadratic (i.e. U-shaped) pattern in which automatic avoidance actions to social reward-threat conflict were faster relative to unambiguous social reward and social threat. Moreover, this association was independent of internalizing and social anxiety symptoms. These results provide insight into mechanisms underlying SAB, which offers clinical implications.


Assuntos
Aprendizagem da Esquiva/fisiologia , Expressão Facial , Motivação/fisiologia , Recompensa , Comportamento Social , Adulto , Ira , Medo , Feminino , Felicidade , Humanos , Masculino , Adulto Jovem
17.
Behav Res Ther ; 132: 103657, 2020 Jun 07.
Artigo em Inglês | MEDLINE | ID: mdl-32682075

RESUMO

Theoretical frameworks propose that threat-related attention, which is typically assessed using the dot-probe paradigm, plays a key role in social anxiety. Within the dot-probe paradigm, novel computational approaches demonstrate that anxious individuals exhibit multiple patterns of threat-related attention on separate trials. However, no research has leveraged such novel computational methods to delineate the neural substrates of threat-related attention patterns in social anxiety. To address this issue, fifty-three socially anxious adults (22.38 ± 3.12, 33 females) completed an fMRI-based dot-probe paradigm. A novel, response-based computation approach revealed conjoint patterns of vigilant orientation, avoidant orientation, slow disengagement, and fast disengagement, which were masked by standard computation measures. Compared to vigilant orientation and fast disengagement, avoidant orientation and slow disengagement were greater in magnitude, respectively. Mirroring behavioral findings, avoidant orientation and slow disengagement elicited greater deactivation of several regions within the Default Mode Network and stronger connectivity between the right amygdala and superior temporal sulcus. Taken together, these results suggest that distinct neural processes facilitate the heterogeneous expression of threat-related attention in social anxiety.

18.
J Soc Psychol ; 160(1): 117-130, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-31053033

RESUMO

At what point is an assemblage of individuals perceived as a single, unified group? And how do demographic characteristics of these individuals influence perceptions of groupness? To answer these questions, we conducted four studies in which participants viewed sets of images that varied in the number of individuals depicted, and then identified the number of persons at which the assemblage was perceived to be a single, unified group. Across four studies, we manipulated the gender and race composition of the persons depicted. The results suggest that five (plus or minus one) people constitutes the point at which a collection of persons is perceived less like separate individuals and more like a single, unified group. However, the demographic complexity of the assemblage also influences perceived groupness. The number of individuals required to be perceived as a unified group is larger for diverse, compared to homogeneous, assemblages of individuals.


Assuntos
Processos Grupais , Percepção Social , Adulto , Feminino , Humanos , Masculino
19.
Schizophr Res ; 206: 428-435, 2019 04.
Artigo em Inglês | MEDLINE | ID: mdl-30337153

RESUMO

BACKGROUND: Individuals with schizophrenia are at increased risk of relapse when they live in highly critical (i.e., high expressed emotion; EE) family environments. It remains less clear, however, how individuals at elevated risk for a psychotic disorder react to the social stress of EE. Here we examined whether individuals at elevated risk for developing schizophrenia report greater subjective changes in affect and have increased physiological reactivity after hearing critical, praising and neutral comments. METHOD: Measures of heart rate, heart rate variability, skin conductance, and self-reported affective ratings were used to assess differential responses to EE-type stimuli in 38 individuals at elevated-risk for psychosis and 38 low-risk controls. RESULTS: The elevated-risk group and low-risk controls, did not differ in their initial affective and physiological reactivity to criticism. However, during the recovery period following the criticism, the elevated-risk group demonstrated greater heart rate activation. They also showed more sensitivity to praise. Although elevated-risk participants initially had higher baseline levels of negative affect and heart rate, following praise, these levels reduced and became indistinguishable from the levels of low-risk controls. CONCLUSIONS: These findings suggest that at-risk individuals may have more difficulty recovering from criticism than their self-report data might suggest. They may also derive physiological and affective benefits from praise. Important clinical implications of these findings are discussed.


Assuntos
Afeto , Emoções Manifestas , Retroalimentação Psicológica , Transtornos Psicóticos/fisiopatologia , Transtornos Psicóticos/psicologia , Adulto , Relações Familiares , Feminino , Frequência Cardíaca , Humanos , Masculino , Fatores de Risco , Esquizofrenia/fisiopatologia , Psicologia do Esquizofrênico , Autorrelato , Estresse Psicológico , Inquéritos e Questionários , Adulto Jovem
20.
Anxiety Stress Coping ; 31(5): 539-554, 2018 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-29976098

RESUMO

BACKGROUND AND OBJECTIVES: Preferential attention to threat, emotional response inhibition, and attentional control each purportedly play a key role in anxiety disorders. Divergent psychometric properties among attention measures may produce differential detection of anxiety-related associations and treatment-related changes. However, no studies have directly compared the psychometric properties of these attention measures in the same sample. DESIGN: Eighty-five young adults (M = 19.41 years, SD = 1.47, 48 Females) completed a cognitive task battery and a subset of 60 participants (M = 19.42 years, SD = 1.48, 33 Females) completed the task battery again approximately two weeks later. METHOD: To assess preferential attention to threat, emotional response inhibition, and attentional control, the cognitive task battery included a dot-probe task, emotion and gender Stroop tasks, and a flanker task. Tasks varied in how attention was directed and if emotional stimuli were included. Internal consistency and test-retest reliability were compared across measures. RESULTS: Within the same sample, internal consistency and reliability differed across attention measures. Explicit attention measures (emotional Stroop and flanker) exhibited stronger internal consistency and greater test-retest reliability compared to implicit measures (dot-probe and gender Stroop). CONCLUSIONS: These results inform clinical research using attention measures to assess anxiety-related differences and treatment response.


Assuntos
Transtornos de Ansiedade/fisiopatologia , Transtornos de Ansiedade/psicologia , Atenção/fisiologia , Adulto , Feminino , Humanos , Masculino , Testes Psicológicos/estatística & dados numéricos , Psicometria , Reprodutibilidade dos Testes , Análise e Desempenho de Tarefas , Adulto Jovem
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