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1.
Dev Psychopathol ; 29(3): 725-736, 2017 08.
Artigo em Inglês | MEDLINE | ID: mdl-27323309

RESUMO

Building upon various lines of research, we posited that methylation of the oxytocin receptor gene (OXTR) would mediate the effect of adult adversity on increased commitment to negative schemas and in turn the development of depression. We tested our model using structural equation modeling and longitudinal data from a sample of 100 middle-aged, African American women. The results provided strong support for the model. Analysis of the 12 CpG sites available for the promoter region of the OXTR gene identified four factors. One of these factors was related to the study variables, whereas the others were not. This factor mediated the effect of adult adversity on schemas relating to pessimism and distrust, and these schemas, in turn, mediated the impact of OXTR methylation on depression. All indirect effects were statistically significant, and they remained significant after controlling for childhood trauma, age, romantic relationship status, individual differences in cell types, and average level of genome-wide methylation. These finding suggest that epigenetic regulation of the oxytocin system may be a mechanism whereby the negative cognitions central to depression become biologically embedded.


Assuntos
Depressão , Pessimismo/psicologia , Pobreza/psicologia , Receptores de Ocitocina/genética , Estresse Psicológico/psicologia , Confiança/psicologia , Adulto , Metilação de DNA , Depressão/etiologia , Depressão/genética , Depressão/psicologia , Feminino , Seguimentos , Humanos , Pessoa de Meia-Idade , Estresse Psicológico/genética
2.
Dev Psychopathol ; 26(4 Pt 1): 1113-28, 2014 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-24713449

RESUMO

Social disorganization theory posits that individuals who live in disadvantaged neighborhoods are more likely to engage in antisocial behavior than are those who live in advantaged neighborhoods and that neighborhood disadvantage asserts this effect through its disruptive impact on social ties. Past research on this framework has been limited in two respects. First, most studies have concentrated on adolescent males. In contrast, the present study focused on a sample of adult African American females. Second, past research has largely ignored individual-level factors that might explain why people who grow up in disadvantaged neighborhoods often do not engage in antisocial behavior. We investigated the extent to which genetic variation contributes to heterogeneity of response to neighborhood conditions. We found that the impact of neighborhood disadvantage on antisocial behavior was mediated by neighborhood social ties. Further, the analysis indicated that the effects of neighborhood disadvantage and social ties on antisocial behavior were moderated by genetic polymorphisms. Examination of these moderating effects provided support for the differential susceptibility model of Gene × Environment. The effect of Gene × Neighborhood Disadvantage on antisocial behavior was mediated by the effect of Gene × Neighborhood Social Ties, providing support for an expanded view of social disorganization theory.


Assuntos
Transtorno da Personalidade Antissocial/etiologia , Negro ou Afro-Americano/psicologia , Apoio Social , Populações Vulneráveis/psicologia , Adolescente , Adulto , Negro ou Afro-Americano/genética , Negro ou Afro-Americano/estatística & dados numéricos , Transtorno da Personalidade Antissocial/genética , Transtorno da Personalidade Antissocial/psicologia , Criança , Feminino , Interação Gene-Ambiente , Variação Genética/genética , Humanos , Entrevista Psicológica , Estudos Longitudinais , Masculino , Receptores de Dopamina D4/genética , Características de Residência/estatística & dados numéricos , Proteínas da Membrana Plasmática de Transporte de Serotonina/genética , Populações Vulneráveis/estatística & dados numéricos , Adulto Jovem
3.
J Black Psychol ; 40(1): 3-26, 2014 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-24443614

RESUMO

The present longitudinal study examined the role of general and tailored social support in mitigating the deleterious impact of racial discrimination on depressive symptoms and optimism in a large sample of African American women. Participants were 590 African American women who completed measures assessing racial discrimination, general social support, tailored social support for racial discrimination, depressive symptoms, and optimism at two time points (2001-2002 and 2003-2004). Our results indicated that higher levels of general and tailored social support predicted optimism one year later; changes in both types of support also predicted changes in optimism over time. Although initial levels of neither measure of social support predicted depressive symptoms over time, changes in tailored support predicted changes in depressive symptoms. We also sought to determine whether general and tailored social support "buffer" or diminish the negative effects of racial discrimination on depressive symptoms and optimism. Our results revealed a classic buffering effect of tailored social support, but not general support on depressive symptoms for women experiencing high levels of discrimination.

4.
J Psychol ; 146(1-2): 7-22, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22303609

RESUMO

The cognitive discrepancy model predicts that loneliness occurs when individuals perceive a difference between their desired and actual levels of social involvement. Using data from a sample of high school sophomore students, the present investigation was designed to go beyond previous research that has tested this model by examining the predicted nonlinear relationships between desired and actual social contact and feelings of loneliness. Analyses indicated that support for the cognitive discrepancy model of loneliness was found only for measures of close friendships. Specifically, the discrepancy between the students' ideal number and actual number of close friends was found to be related in a nonlinear fashion to feelings of satisfaction with close friendships and loneliness after control for the number of close friends. Implications of these findings for theoretical models of loneliness are discussed.


Assuntos
Amigos/psicologia , Solidão/psicologia , Satisfação Pessoal , Comportamento Social , Percepção Social , Adolescente , Emoções , Feminino , Humanos , Relações Interpessoais , Masculino , Valor Preditivo dos Testes , Inquéritos e Questionários
5.
Curr Opin Psychol ; 43: 129-138, 2022 02.
Artigo em Inglês | MEDLINE | ID: mdl-34365147

RESUMO

The COVID-19 pandemic has highlighted the significant and varied losses that couples can experience during times of global and regional disasters and crises. What factors determine how couples navigate their close relationships during times of loss? In this paper, we elaborate and extend on one of the most influential frameworks in relationship science-the Vulnerability Stress Adaptation Model (VSAM, Karney and Bradbury, 1995)-to enhance the model's power to explain relationships during loss-themed disasters/crises. We do so by elaborating on attachment theory and integrating interdependence theory (emphasizing partner similarities and differences). Our elaboration and extension to the VSAM provides a comprehensive framework to guide future research and inform practice and policy in supporting relationships during and beyond loss-themed disasters/crises.


Assuntos
COVID-19 , Desastres , Humanos , Relações Interpessoais , Pandemias , SARS-CoV-2
6.
J Affect Disord ; 292: 471-474, 2021 09 01.
Artigo em Inglês | MEDLINE | ID: mdl-34146898

RESUMO

BACKGROUND: The purpose of this cross-sectional study was to examine the effect of physical activity (PA) on the relationship between perceived racial discrimination and major depressive disorder (MDD) in African Americans. METHODS: 645 African Americans (mean age 45 years) were interviewed on their perceived racial discrimination, PA, and past 12-month MDD. Participants were categorized into tertiles (lower, middle, upper) of racial discrimination as well as "active" or "inactive" groups based on the US PA guidelines. Odds ratios and 95% confidence intervals (CIs) were calculated for MDD prevalence across discrimination tertiles stratified by PA group after adjusting for potential confounders. RESULTS: The upper (higher) discrimination group had 2.99 (95% CIs 1.03-8.67) increased odds of MDD compared with the lower group after adjusting for potential confounders. The stratified analysis indicated that the increased odds of MDD in the upper discrimination group were observed only among the inactive group (5.19 [1.08-24.87]) after adjusting for age and sex. The association between discrimination and MDD was not significant among active participants. LIMITATIONS: Limitations include generalizability since participants were predominantly women and recruited solely from Iowa or Georgia; the low number of MDD cases in some groups; and that causation cannot be inferred from this cross-sectional study. CONCLUSION: Not meeting the PA guidelines may be associated with higher depression among African Americans experiencing higher levels of perceived racial discrimination.


Assuntos
Transtorno Depressivo Maior , Racismo , Negro ou Afro-Americano , Estudos Transversais , Depressão , Transtorno Depressivo Maior/epidemiologia , Exercício Físico , Feminino , Georgia , Humanos , Iowa , Pessoa de Meia-Idade
7.
Innov Aging ; 4(5): igaa046, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33204850

RESUMO

BACKGROUND AND OBJECTIVES: Over the years, a large amount of research has been devoted to the investigation of factors that led to mental health outcomes in older adults. For African American older adults, their lived experiences place them at high risk for mental health problems. The purpose of this study was to examine the impact of early life influences (i.e., education, childhood life events, and childhood financial well-being) and present psychosocial resources (i.e., individual, financial, and social) on current mental health outcomes in a sample of African American older adults in their 60s, 80s, and 100s. RESEARCH DESIGN AND METHODS: Using data from the Georgia Centenarian Study, 125 participants were interviewed about their mental health, resources, and early life influences. RESULTS: A structural equation model was tested and resulted in a good fit. Results indicated that the more social resources African American older adults had available, the lower the number of depressive symptoms they reported. African Americans with higher levels of financial well-being during childhood reported higher self-rated mental health. Older adults had higher levels of financial resources. Level of education showed a positive relationship with financial resources. Indirect effects of distal influences on health outcomes via current resources were not found. DISCUSSION AND IMPLICATIONS: The findings are of direct practical relevance and can be used to more readily identify older African Americans who may be susceptible to poorer mental health outcomes based upon the impact of their unique distal and proximal psychosocial resources.

8.
J Fam Psychol ; 33(3): 338-348, 2019 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-30742465

RESUMO

We followed 402 African American young adults from ages 24 to 29, a period of emerging committed relationships, to examine the association of contextual stress (CS), for example, experiences of financial strain, victimization, and racial discrimination, with inflammation, and to test predictions that greater perceived relationship warmth and support (PRWS) at age 29 would moderate the association between earlier CS and inflammation, using a multiplex assessment of cytokines to construct an index of the ratio between predominantly proinflammatory cytokines versus predominantly anti-inflammatory cytokines. CS experienced at age 24 was associated with greater inflammation at age 29 in the full sample (b = .112, p = .004). PRWS at age 29 moderated the association of earlier CS with inflammation (b = -.114, p = .011), but there was no significant main effect of PRWS (b = -.053, p = .265). Finally, using an internal moderator approach, we compared the association of CS with inflammation among those not in a committed relationship to those in more or less supportive relationships, showing a significant and stronger association of CS with inflammation for those with low PRWS (-1 SD; b = .182, p < .001), a weaker and nonsignificant association of CS with inflammation among those with higher PRWS (+1 SD; b = -.002, p = .975), and an intermediate and nonsignificant association of CS with inflammation among those with no committed romantic relationship (b = .077, p = .227). Results were robust to number of cytokines included in the inflammation index. (PsycINFO Database Record (c) 2019 APA, all rights reserved).


Assuntos
Negro ou Afro-Americano/psicologia , Vítimas de Crime/psicologia , Inflamação/imunologia , Inflamação/psicologia , Racismo/psicologia , Parceiros Sexuais/psicologia , Apoio Social , Estresse Psicológico/imunologia , Adulto , Citocinas/imunologia , Citocinas/metabolismo , Economia , Feminino , Humanos , Mediadores da Inflamação/imunologia , Estudos Longitudinais , Masculino , Percepção Social , Fatores Socioeconômicos , Estresse Psicológico/psicologia , Adulto Jovem
9.
J Black Psychol ; 34(3): 399-420, 2008 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-23225915

RESUMO

Little research has examined the links between role status changes during the transition to adulthood and sexual behaviors that place African Americans at risk for sexually transmitted infections. Moreover, the mediating processes that explain these links, or protective factors that may buffer young adults from risky sexual behavior, are unknown. African American young adults who had either completed or dropped out of high school (ages 18 to 21, N = 186) provided information regarding their sexual behavior, role status, substance use, peer affiliations, religiosity, and receipt of protective family processes. Anticipated school attendance, part-time rather than full-time employment, and residence in a dorm or barracks rather than with peers or alone were negatively associated with risk behavior. Parenthood was positively associated with risk behavior; affiliation with peers who encourage risky sex partially accounted for this effect. Substance use fully accounted for the effect of part-time versus full-time employment on sexual risk behavior. Protective family processes and religiosity moderated the association of parenthood with sexual risk behavior. Prospective studies on these processes are warranted.

10.
Psychol Health ; 33(2): 193-212, 2018 02.
Artigo em Inglês | MEDLINE | ID: mdl-28436272

RESUMO

OBJECTIVE: The goal of the study was to examine differential mediation of long-term effects of discrimination on health behaviour and health status by internalising (anxiety and depression) and externalising (hostility and anger), and to explore moderation of these effects, specifically, by the presence of support networks and coping tendencies. DESIGN: The current analyses employed structural equation modelling of five waves of data from Black female participants of the Family and Community Health Study over 11 years (M age 37-48). MAIN OUTCOMES MEASURES: The main outcome variables were health status and alcohol use (frequency and problematic consumption). RESULTS: Perceived racial discrimination was associated with increases in internalising and externalising. In addition, internalising reactions to discrimination were associated with deterioration in health status and increases in problematic drinking; externalising reactions were associated with increases in frequency of drinking. These relations were attenuated by availability of support networks, and exacerbated by use of avoidance coping. CONCLUSION: The current study (a) replicated previous research suggesting that two different types of affective reactions mediate the relations between perceived racial discrimination and physical health status vs. health-impairing behaviours: internalising and externalising, and (b) revealed moderation of these effects by coping mechanisms.


Assuntos
Afeto , Negro ou Afro-Americano/psicologia , Nível de Saúde , Racismo/psicologia , Adaptação Psicológica , Adulto , Negro ou Afro-Americano/estatística & dados numéricos , Consumo de Bebidas Alcoólicas/etnologia , Feminino , Humanos , Pessoa de Meia-Idade , Percepção
11.
J Abnorm Psychol ; 127(2): 150-159, 2018 02.
Artigo em Inglês | MEDLINE | ID: mdl-29528669

RESUMO

This study examined the impact of neighborhood racial discrimination on the development of major depressive disorder (MDD) in a sample of African American women. Participants were 499 women from Georgia and Iowa with no history of MDD who were followed for 9 to 11 years. Several neighborhood characteristics (community social disorder, community cohesion, and community racism) and individual characteristics (negative life events, financial strain, personal outlook, religious involvement, relationship quality, negative affectivity, and individual experiences of racism) were employed as predictors of whether or not the women met criteria for MDD during this period of time. In a multilevel logistic regression analysis, neighborhood-level discrimination as well as individual-level variables including the number of negative life events, financial strain, and negative affectivity were found to be significant predictors of developing MDD. Analyses of cross-level interactions indicated that the effects of neighborhood-level discrimination were moderated by the quality of individuals' relationships, such that better relationships with others served to lessen the effect of neighborhood discrimination on depression. Implications of these findings for understanding the negative effects of racial discrimination are discussed. (PsycINFO Database Record


Assuntos
Transtorno Depressivo Maior/epidemiologia , Racismo/psicologia , Características de Residência , Adulto , Negro ou Afro-Americano , Idoso , Idoso de 80 Anos ou mais , Transtorno Depressivo Maior/etiologia , Transtorno Depressivo Maior/psicologia , Feminino , Georgia/epidemiologia , Humanos , Iowa/epidemiologia , Pessoa de Meia-Idade , Fatores de Risco , Fatores Socioeconômicos
12.
J Fam Psychol ; 21(4): 754-8, 2007 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-18179347

RESUMO

Partner sensitivity is an important antecedent of both intimacy (H. T. Reis & P. Shaver, 1988) and attachment (M. D. S. Ainsworth, 1989). On the basis of the optimal matching model of social support (C. E. Cutrona & D. Russell, 1990), support behaviors that "matched" the support goals of the stressed individual were predicted to lead to the perception of partner sensitivity. Predictions were tested with 59 married couples, who engaged in a videotaped self-disclosure task. Matching support was defined as the disclosure of emotions followed by emotional support or a request for information followed by informational support. Partial evidence was found for the predictions. Matching support following the disclosure of emotions was predictive of perceived partner sensitivity. Mismatched support following the disclosure of emotions predicted lower marital satisfaction, through the mediation of partner sensitivity. Matching support following a request for information was not predictive of perceived partner sensitivity, but negative partner responses (e.g., criticism or sarcasm) following a request for information negatively predicted perceptions of partner sensitivity. The importance of considering the context of support transactions is discussed.


Assuntos
Relações Interpessoais , Casamento/psicologia , Apoio Social , Cônjuges/psicologia , Adulto , Emoções , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Meio-Oeste dos Estados Unidos , Gravação de Videoteipe
13.
Curr Opin Psychol ; 13: 126-130, 2017 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-28813282

RESUMO

Adult attachment theory provides guidance for providing optimal social support in intimate relationships. According to attachment theory, facilitating autonomy (secure base support) sometimes is more important than providing nurturance (safe haven support). In addition, it is important that couples celebrate one another's triumphs and successes (another form of secure base support). A key construct that explains the development of attachment is responsiveness to the individual's needs. Support that is delivered in a responsive manner (i.e., that leads the individual to feel understood, validated, and cared for) is more likely to enhance the relationship and less likely to damage self-esteem than assistance that is not responsive. A responsive exchange is more likely if emotion dysregulation can be prevented. Attachment theory offers explanations for why people vary in their effectiveness at emotion regulation. Appropriate emotion regulation is more likely if disclosures of current difficulties can be made in a way that is not defensive or accusatory, an ability that varies as a function of attachment orientation. Attachment theory also offers guidance regarding the optimal forms of social support for specific individuals. All these insights from adult attachment theory can be integrated into interventions to help couples become more effective support providers.

14.
Pers Soc Psychol Bull ; 43(7): 1050-1064, 2017 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-28903708

RESUMO

The factors that allow people to be good support providers in relationships are not fully understood. We examined how support providers' stressful experiences (financial strain and racial discrimination) differentially influence their supportiveness, using longitudinal data from two samples of African American couples. Among couples that provided observational data ( N = 163 couples), providers who experienced high chronic financial strain behaved less supportively toward their partners, while those who experienced frequent racial discrimination behaved more supportively over a 2-year period. In a second sample of 213 couples over a 3-year period, support providers who experienced financial strain were perceived by their partners as slightly less supportive, while providers who experienced frequent racial discrimination were perceived by their partners as more supportive. Findings suggest that supportiveness in relationships may be differentially shaped by the specific stresses and strains that partners face.


Assuntos
Negro ou Afro-Americano/psicologia , Relações Interpessoais , Apoio Social , Estresse Psicológico , Adulto , Idoso , Idoso de 80 Anos ou mais , Família , Feminino , Humanos , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Racismo/psicologia , Fatores Socioeconômicos , Cônjuges/psicologia , Fatores de Tempo
15.
Soc Sci Med ; 185: 158-165, 2017 07.
Artigo em Inglês | MEDLINE | ID: mdl-28356188

RESUMO

BACKGROUND: It is assumed that both social stress and chronological age increase the risk of chronic illness, in part, through their effect on systemic inflammation. Unfortunately, observational studies usually employ single-marker measures of inflammation (e.g., Interleukin-6, C-reactive protein) that preclude strong tests for mediational effects. OBJECTIVE: The present study investigated the extent to which the effects of socioeconomic disadvantage and age on onset of chronic illness is mediated by dominance of the innate (inflammatory) over the acquired (antiviral) components of the immune system. METHODS: We assessed inflammation using the ratio of inflammatory to antiviral cell types (ITACT Ratio). This approach provided a stronger test of evolutionary arguments regarding the effect of social stress on chronic inflammation than is the case with cytokine measures, and afforded an opportunity to replicate findings obtained utilizing mRNA. We used structural equation modeling and longitudinal data from a sample of 100 middle-age African American women to perform our analyses. RESULTS: Dominance of inflammatory over antiviral cell activity was associated with each of the eight illnesses included in our chronic illness measure. Both socioeconomic disadvantage and age were also associated with inflammatory dominance. Pursuant to the central focus of the study, the effects of socioeconomic adversity and age on increased illness were mediated by our measure of inflammatory dominance. The indirect effect of these variables through inflammatory cell profile was significant, with neither socioeconomic disadvantage nor age showing a significant association with illness once the impact of inflammatory cell profile was taken into account. CONCLUSIONS: First, the analysis provides preliminary validation of a new measure of inflammation that is calculated based on the ratio of inflammatory to antiviral white blood cells. Second, our results support the hypothesis that socioeconomic disadvantage and chronological age increase risk for chronic illness in part through their effect on inflammatory processes.


Assuntos
Células/classificação , Doença Crônica , Gravidade do Paciente , Fatores Socioeconômicos , Estresse Psicológico/complicações , Fatores Etários , Biomarcadores/análise , Humanos , Inflamação/sangue , Normas Sociais
16.
Psychol Addict Behav ; 20(4): 404-14, 2006 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-17176175

RESUMO

Using 2 waves of longitudinal data collected from approximately 870 African American adolescents, this study examined (a) changes in early risk factors for substance use during transition to early adolescence, including perceived prototypes of substance-using peers, willingness and intention to use substances, number of substance-using peers, and youths' own actual substance use; (b) the relationship between pubertal timing and these substance use risks; and (c) the interaction between pubertal timing and peer substance use in predicting the risks. Results showed that, first, risks for substance use increased, particularly among girls, during the transition to early adolescence. Children's prototypic images of substance users became increasingly favorable during this transitional period; a greater number of them were willing and intended to use substances during the transition to early adolescence; and an increased number of early adolescents and their friends began to use substances. Second, these changes were significantly more likely to occur among early maturing girls. Third, early physical maturation interacted with peer substance use to affect these changes.


Assuntos
População Negra/psicologia , Grupo Associado , Puberdade/psicologia , Fumar/psicologia , Desejabilidade Social , Percepção Social , Tabagismo/psicologia , Adolescente , População Negra/estatística & dados numéricos , Criança , Estudos Transversais , Feminino , Georgia , Humanos , Iowa , Estudos Longitudinais , Masculino , Desenvolvimento Psicossexual , Fatores de Risco , Fatores Sexuais , Fumar/epidemiologia , Fumar/etnologia , Meio Social , Facilitação Social , Identificação Social , Tabagismo/epidemiologia , Tabagismo/etnologia
17.
Am J Health Behav ; 40(6): 697-704, 2016 11.
Artigo em Inglês | MEDLINE | ID: mdl-27779938

RESUMO

OBJECTIVE: We examined the mediational role of symptoms of anxiety in accounting for the association of discrimination and chronic health conditions among African-American women. METHODS: Participants were 646 African-American women who completed self-report measures of perceived racial discrimination, symptoms of anxiety, and diagnosed chronic health problems. RESULTS: We examined the mediation hypothesis using a path analytic procedure. Mediational analyses indicated that, above and beyond symptoms of depression, age, and education status, anxiety symptoms were associated with both racial discrimination (ß = .03, SE = .01, p < .001) and chronic health problems (ß = .33, SE = .09, p < .001) and significantly mediated the discrimination-health association (ß = -.01, SE = .01, p = .16). CONCLUSIONS: These findings highlight the potentially vital role of symptoms of anxiety in the process that occurs from an individual's perception of discrimination to reported chronic health outcomes. Future research expanding our understanding of the interconnection of psychosocial stressors, discrimination, and their biological sequelae is needed.


Assuntos
Ansiedade/psicologia , Negro ou Afro-Americano/psicologia , Racismo/psicologia , Adulto , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Ansiedade/etiologia , Doença Crônica/epidemiologia , Doença Crônica/etnologia , Doença Crônica/psicologia , Depressão/epidemiologia , Depressão/etnologia , Depressão/psicologia , Escolaridade , Feminino , Georgia/epidemiologia , Nível de Saúde , Humanos , Iowa/epidemiologia , Pessoa de Meia-Idade , Percepção Social , Adulto Jovem
18.
J Fam Psychol ; 30(2): 221-32, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-26376424

RESUMO

We examined whether romantic relationship satisfaction would serve as a link between early and later stressors which in turn would influence the thyroid function index (TFI), an indicator of physiological stress response. Using the framework of genetic susceptibility theory combined with hypotheses derived from the vulnerability-stress-adaptation and stress-generation models, we tested whether the hypothesized mediational model would be conditioned by 5-HTTLPR genotype, with greater effects and stronger evidence of mediation among carriers of the "s" allele. In a sample of African American women in romantic relationships (n = 270), we found that 5-HTTLPR moderated each stage of the hypothesized mediational model in a "for better or for worse" manner. That is genetic polymorphisms function to exacerbate not only the detrimental impact of negative environments (i.e., "for worse effects") but also the beneficial impact of positive environments (i.e., "for better effects"). The effect of early stress on relationship satisfaction was greater among carriers of the "short" allele than among those who did not carry the short allele, and was significantly different in both the "for better" and "for worse" direction. Likewise, the effect of relationship satisfaction on later stressors was moderated in a "for better "or "for worse" manner. Finally, impact on physiological stress, indexed using TFI level, indicated that the impact of later stressors on TFI level was greater in the presence of the short allele, and also followed a "for better" or "for worse" pattern. As expected, the proposed mediational model provided a better fit for "s" allele carriers.


Assuntos
Negro ou Afro-Americano/genética , Negro ou Afro-Americano/psicologia , Predisposição Genética para Doença/etnologia , Relações Interpessoais , Satisfação Pessoal , Proteínas da Membrana Plasmática de Transporte de Serotonina/genética , Estresse Psicológico/etnologia , Adulto , Negro ou Afro-Americano/estatística & dados numéricos , Alelos , Feminino , Genótipo , Heterozigoto , Humanos , Modelos Teóricos , Polimorfismo Genético , Estresse Fisiológico/genética
19.
Soc Sci Med ; 150: 192-200, 2016 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-26765221

RESUMO

BACKGROUND: Past research has linked low socio-economic status (SES) to inflammation, metabolic dysregulation, and various chronic and age-related diseases such as type 2 diabetes, coronary heart disease, stroke, and dementia. These studies suggest that the challenges and adversities associated with low SES may result in premature aging and increased risk of morbidity and mortality. OBJECTIVE: Building upon this research, the present study investigates various avenues whereby low income might accelerate biological aging. METHODS: Structural equation modeling and longitudinal data from a sample of 100 Black, middle-aged women residing in the United States was used to investigate the effect of income on a recently developed epigenetic measure of biological aging. This measure can be used as a "biological clock" to assess, at any point during adulthood, the extent to which an individual is experiencing accelerated or decelerated biological aging. RESULTS: Low income displayed a robust association with accelerated aging that was unaffected after controlling for other SES-related factors such as education, marital status, and childhood adversity. Further, our analyses indicated that the association between income and biological aging was not explained by health-related behaviors such as diet, exercise, smoking, alcohol consumption, or having health insurance. Rather, in large measure, it was financial pressure (difficulty paying bills, buying necessities, or meeting daily expenses) that accounted for the association between low income and accelerated aging. CONCLUSIONS: These findings support the view that chronic financial pressures associated with low income exert a weathering effect that results in premature aging.


Assuntos
Senilidade Prematura/etiologia , Recessão Econômica/estatística & dados numéricos , Nível de Saúde , Negro ou Afro-Americano/etnologia , Negro ou Afro-Americano/estatística & dados numéricos , Epigenômica , Feminino , Humanos , Fatores Socioeconômicos , Estados Unidos/etnologia
20.
J Abnorm Psychol ; 114(1): 3-15, 2005 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-15709807

RESUMO

The authors tested neighborhood context, negative life events, and negative affectivity as predictors of the onset of major depression among 720 African American women. Neighborhood-level economic disadvantage (e.g., percentage of residents below the poverty line) and social disorder (e.g., delinquency, drug use) predicted the onset of major depression when controlling for individual-level demographic characteristics. Neighborhood-level disadvantage/disorder interacted with negative life events, such that women who experienced recent negative life events and lived in high disadvantage/disorder neighborhoods were more likely to become depressed than were those who lived in more benign settings, both concurrently and over a 2-year period. Neighborhood disadvantage/disorder can be viewed as a vulnerability factor that increases susceptibility to depression following the experience of negative life events.


Assuntos
Negro ou Afro-Americano/psicologia , Negro ou Afro-Americano/estatística & dados numéricos , Transtorno Depressivo Maior/etnologia , Acontecimentos que Mudam a Vida , Transtornos da Personalidade/etnologia , Características de Residência , Meio Social , Adulto , Idoso , Idoso de 80 Anos ou mais , Comorbidade , Transtorno Depressivo Maior/diagnóstico , Transtorno Depressivo Maior/psicologia , Feminino , Seguimentos , Humanos , Pessoa de Meia-Idade , Transtornos da Personalidade/diagnóstico , Transtornos da Personalidade/psicologia , Estudos Prospectivos , Estudos de Amostragem , Transtornos do Comportamento Social/epidemiologia , Fatores Socioeconômicos , Inquéritos e Questionários
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