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1.
Brain Behav Immun ; 119: 801-806, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38677624

RESUMEN

There is urgent need for novel antidepressant treatments that confer therapeutic benefits via engagement with identified mechanistic targets. The objective of the study was to determine whether activation of the classical anti-inflammatory interleukin-6 signaling pathways is associated with the antidepressant effects of whole-body hyperthermia. A 6-week, randomized, double-blind study compared whole-body hyperthermia with a sham condition in a university-based medical center. Medically healthy participants aged 18-65 years who met criteria for major depressive disorder, were free of psychotropic medication use, and had a baseline 17-item Hamilton Depression Rating Scale score ≥ 16 were randomized with 1-to-1 allocation in blocks of 6 to receive whole-body hyperthermia or sham. Of 338 individuals screened, 34 were randomized, 30 received interventions and 26 had ≥ 2 blood draws and depressive symptom assessments. Secondary data analysis examined change in the ratio of IL-6:soluble IL-6 receptor pre-intervention, post-intervention, and at weeks 1 and 4. Hierarchical linear modeling tested whether increased IL-6:soluble IL-6 receptor ratio post-intervention was associated with decreased depressive symptom at weeks 1, 2, 4 and 6 for those randomized to whole-body hyperthermia. Twenty-six individuals were randomized to whole-body hyperthermia [n = 12; 75 % female; age = 37.9 years (SD = 15.3) or sham [n = 14; 57.1 % female; age = 41.1 years (SD = 12.5). When compared to the sham condition, active whole-body hyperthermia only increased the IL-6:soluble IL-6 receptor ratio post-treatment [F(3,72) = 11.73,p < .001], but not pre-intervention or at weeks 1 and 4. Using hierarchical linear modeling, increased IL-6:sIL-6R ratio following whole-body hyperthermia moderated depressive symptoms at weeks 1, 2, 4 and 6, such that increases in the IL-6:soluble IL-6 receptor ratio were associated with decreased depressive symptoms at weeks 1, 2, 4 and 6 for those receiving the active whole-body hyperthermia compared to sham treatment (B = -229.44, t = -3.82,p < .001). Acute activation of classical intereukin-6 signaling might emerge as a heretofore unrecognized novel mechanism that could be harnessed to expand the antidepressant armamentarium.


Asunto(s)
Trastorno Depresivo Mayor , Interleucina-6 , Receptores de Interleucina-6 , Transducción de Señal , Humanos , Femenino , Masculino , Interleucina-6/sangre , Adulto , Método Doble Ciego , Persona de Mediana Edad , Transducción de Señal/efectos de los fármacos , Trastorno Depresivo Mayor/terapia , Receptores de Interleucina-6/metabolismo , Hipertermia Inducida/métodos , Adulto Joven , Adolescente , Resultado del Tratamiento , Anciano , Hipertermia , Antidepresivos/uso terapéutico , Antidepresivos/farmacología
2.
J Clin Child Adolesc Psychol ; : 1-14, 2024 May 01.
Artículo en Inglés | MEDLINE | ID: mdl-38690948

RESUMEN

OBJECTIVE: Although life stress has been linked to adolescent suicidal ideation, most past research has been cross-sectional, and potential processes characterizing this relation remain unclear. One possibility may be a lack of emotional clarity. Informed by stress generation, the current study examined prospective relations between episodic life stress, lack of emotional clarity, and suicidal ideation in an adolescent clinical sample. METHODS: The sample consisted of 180 youths (Mage = 14.89; SD = 1.35; 71.7% female; 78.9% White; 43.0% sexual minority) recruited from a psychiatric inpatient facility. Suicidal ideation severity was assessed at baseline and 18-month follow-up. Lack of emotional clarity and life stress were assessed at baseline, as well as 6-, and 12-month follow-ups. Two random-intercepts cross-lagged panel models were created to estimate within-person relations for variables of interest. RESULTS: At the within-person level, lack of emotional clarity at baseline predicted greater 6-month impact of interpersonal dependent stressors (b = 0.29, p = .012, 95% CI [0.07, 0.52]), which subsequently predicted a greater 12-month lack of emotional clarity (b = 0.41, p = .005, 95% CI [0.12, 0.70]). Next, a 12-month lack of emotional clarity but not interpersonal dependent stress, predicted greater 18-month suicidal ideation (b = 0.81, p = .006, 95% CI [0.23, 1.30]; R2 = .24, p < .001). No significant relations were found for the lack of emotional clarity and independent stress. CONCLUSIONS: Results support the stress generation hypothesis and suggest that future research should be conducted evaluating whether bolstering youth's understanding of their emotional experiences may reduce subsequent suicidal ideation.

3.
Psychol Med ; 53(1): 274-282, 2023 01.
Artículo en Inglés | MEDLINE | ID: mdl-33960286

RESUMEN

BACKGROUND: Although the clinical importance of non-suicidal self-injury (NSSI) has received increasing recognition, relatively little is known about its epidemiology. The objective of this study was to estimate the lifetime prevalence of NSSI in adults and its association with sociodemographic characteristics, psychiatric disorders, and lifetime treatment for NSSI. METHODS: A nationally representative face-to-face survey was conducted with 7192 adults aged ≥18 years in England. Respondents were interviewed about engagement in NSSI, psychiatric illness, suicidal thoughts and behavior, and treatment history for this behavior. RESULTS: The estimated lifetime prevalence rate of NSSI was 4.86%. Younger age, growing up without biological parents in the household, being unmarried, and impoverished backgrounds were associated with NSSI. The majority of respondents with lifetime NSSI (63.82%) had at least one current psychiatric disorder. Most psychiatric conditions were associated with greater odds of lifetime NSSI in multivariate models. NSSI was strongly associated with suicidal ideation and suicide attempts, respectively, even after accounting for psychiatric disorders and sociodemographic covariates. A substantial proportion of respondents with NSSI history (30.92%) have engaged in medically severe self-harm, as indexed by requiring medical attention for this behavior. The majority of respondents with NSSI (56.20%) had not received psychiatric care for this behavior. CONCLUSIONS: NSSI is prevalent in the general population and associated with considerable psychiatric comorbidity. A high rate of unmet treatment needs is evident among those with this behavior. Those at the greatest lifetime risk for NSSI may also be particularly limited in their resources to cope with this behavior.


Asunto(s)
Conducta Autodestructiva , Humanos , Adulto , Adolescente , Prevalencia , Conducta Autodestructiva/epidemiología , Conducta Autodestructiva/terapia , Conducta Autodestructiva/psicología , Intento de Suicidio , Ideación Suicida , Factores de Riesgo , Inglaterra/epidemiología
4.
Psychol Med ; 53(7): 2974-2981, 2023 May.
Artículo en Inglés | MEDLINE | ID: mdl-37449490

RESUMEN

BACKGROUND: Although the prevalence rates of preadolescent eating disorders (EDs) are on the rise, considerably less is known about the correlates and treatment of EDs in this age group. Clarifying the epidemiology of EDs in preadolescent children is a necessary first step to understand the nature and scope of this problem in this age group. METHODS: Analysis of data collected in the ABCD Study release 2.0.1. The ABCD cohort was a population-based sample that consisted of 11 721 children ages 9-10 years. Measures included reports of a lifetime and current mental disorders determined using a diagnostic interview for DSM-5 disorders, sociodemographic factors, and psychiatric treatment utilization. RESULTS: The lifetime prevalence of EDs was 0.95%. Being Black, multiracial, having unmarried parents, and family economic insecurity were significant predictors for developing an ED. Among psychiatric conditions, the major depressive disorder was most robustly associated with EDs in both cross-sectional and temporal analyses. Only 47.40% of children who had a lifetime ED received some type of psychiatric treatment. EDs were not a significant predictor of psychiatric treatment utilization after accounting for sex, sexual orientation, parent marital status, economic insecurity, and all other psychiatric diagnoses. CONCLUSIONS: Despite increasing prevalence rates of preadolescent EDs, the current findings suggest that the majority of children with these disorders remain untreated. Devoting increased attention and resources to reaching families of children with EDs with the least means for receiving care, and screening for EDs in children with depression, may be important steps for reducing this unmet need.


Asunto(s)
Trastorno Depresivo Mayor , Trastornos de Alimentación y de la Ingestión de Alimentos , Humanos , Masculino , Niño , Femenino , Prevalencia , Estudios Transversales , Trastornos de Alimentación y de la Ingestión de Alimentos/epidemiología , Trastornos de Alimentación y de la Ingestión de Alimentos/terapia , Psicoterapia
5.
J Clin Child Adolesc Psychol ; 51(3): 295-311, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-34570668

RESUMEN

OBJECTIVE: Interpersonal negative life events (NLEs) have been linked to risk for suicidal thoughts and behaviors. However, little is known about how this risk is conferred over the short term and the mechanisms linking interpersonal NLEs to suicide risk, particularly in adolescents. This study used an intensive longitudinal design to examine thwarted belongingness with family and friends as potential mechanisms linking interpersonal NLEs to suicidal thoughts. METHOD: Forty-eight adolescents (Mage = 14.96 years; 64.6% female, 77.1% White), who recently received acute psychiatric care for suicide risk, were followed intensely for 28 days after discharge. Smartphone-based ecological momentary assessment was used to measure presence of interpersonal NLEs at the day level, fluctuations in thwarted belongingness with family and friends (separately) within day, and fluctuations in suicidal thoughts within day. A multi-level structural equation model was utilized to examine family thwarted belongingness and friend thwarted belongingness as parallel mediators in the relationship between interpersonal NLEs and next-day suicidal thoughts. RESULTS: Significant direct effects were observed between interpersonal NLEs and family thwarted belongingness, family thwarted belongingness and suicidal thoughts, and friend thwarted belongingness and suicidal thoughts. In addition, family, but not friend, thwarted belongingness significantly mediated the association between interpersonal NLEs and next-day suicidal thoughts. CONCLUSIONS: Interpersonal NLEs predicted greater suicidal thoughts over the short term (next day) in high-risk adolescents. Findings suggest how interpersonal NLEs may confer risk for suicidal thoughts - by reducing feelings of family belongingness. Future research is needed to examine how modifying belongingness may reduce suicide risk in adolescents.


Asunto(s)
Ideación Suicida , Suicidio , Adolescente , Femenino , Amigos , Humanos , Relaciones Interpersonales , Estudios Longitudinales , Masculino , Teoría Psicológica , Factores de Riesgo , Suicidio/psicología
6.
Psychosom Med ; 83(9): 1075-1081, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34267084

RESUMEN

OBJECTIVE: This study aimed to evaluate whether a history of depression or self-injurious thoughts and behaviors predict elevated body mass index (BMI) and elevated waist-to-height ratio in preadolescents. METHODS: Baseline data were evaluated from a large, nationally representative cohort study of 9- and 10-year-old children (unweighted n = 11,875), the Adolescent Brain and Cognitive Development study. RESULTS: In the weighted sample, 10.6% of children had a history of depression, 7.0% had engaged in nonsuicidal self-injury, 13.1% had experienced suicidal ideation in their lifetime, and 1.1% had a history of attempted suicide. Among the children, 34.1% had an elevated BMI in the overweight or obese range and 31.9% had a waist-to-height ratio >0.5. In multivariate analyses, history of depression was associated with elevated BMI and waist-to-height ratio. Furthermore, interactions with sex were found; girls with a history of depression were more likely to have an elevated BMI (odds ratio = 1.47, 95% confidence interval = 1.24-1.74) and elevated waist-to-height ratio (odds ratio = 1.48, 95% confidence interval = 1.18-1.86) than girls without a history of depression, but no differences were observed between boys with and without a history of depression. Self-injurious thoughts and behaviors were not associated with elevated BMI or elevated waist-to-height. CONCLUSIONS: In this study, 9- and 10-year-old girls with a history of depression were more likely to have an elevated BMI and elevated waist-to-height ratio than girls with no history of depression. These results provide important clinical context in caring for preadolescents with a history of depression.


Asunto(s)
Estatura , Depresión , Adolescente , Índice de Masa Corporal , Niño , Estudios de Cohortes , Depresión/epidemiología , Femenino , Humanos , Masculino , Factores de Riesgo , Circunferencia de la Cintura
7.
Depress Anxiety ; 38(1): 48-56, 2021 01.
Artículo en Inglés | MEDLINE | ID: mdl-32789968

RESUMEN

INTRODUCTION: Given increasing concern in suicide in preadolescent children, this study aimed to characterize and identify potential indicators of risk for suicidal ideation (SI) and suicide attempts (SAs) in this population. METHODS: Data were drawn from two population-based samples of preadolescents: the 2007 and 2010 Minnesota Student Survey and analyses were restricted to 11- and 12-year-olds. Sociodemographic characteristics, childhood maltreatment, parental relations, peer relations, and school climate were examined in relation to past-year SI and SA. To examine correlates of SI, unconfounded by risk for SA, individuals with a history of SA were excluded from SI analyses. Correlates of SA were examined among individuals with past-year SI. Logistic regression analyses were conducted with past-year SI and SA as criterion variables. RESULTS: Results from the 2007 and 2010 data sets were highly consistent. The prevalence of past-year SI was 9.28% and 9.25% in 2007 and 2010, respectively. Of the total sample, 1.90% and 1.87% reported a past-year SA (17.00% and 16.78% of those with past-year SI). Overall, effect sizes were generally modest to medium. The strongest effects were observed for sexual and physical abuse, parental support, and perceived safety at school (ps < .001). In multivariate analyses of SI and SA, sexual and physical abuse had the largest effect sizes (ORSI = 2.18 [95% CI = 1.90-2.51] to 2.96 [95% CI = 2.69-3.26]; ORSA = 1.55 [95% CI = 1.29-1.86] to 2.26 [95% CI = 1.82-2.80]). CONCLUSIONS: SI and SA occur at a concerning rate among preadolescent children. Screening for childhood sexual and physical abuse may be important for identifying those at risk for these clinical outcomes.


Asunto(s)
Ideación Suicida , Intento de Suicidio , Niño , Humanos , Relaciones Interpersonales , Prevalencia , Factores de Riesgo , Estudiantes
8.
Psychol Med ; 50(3): 367-383, 2020 02.
Artículo en Inglés | MEDLINE | ID: mdl-31907085

RESUMEN

BACKGROUND: Compared to active ideation, passive ideation remains relatively understudied and its clinical importance poorly defined. The weight that should be accorded passive ideation in clinical risk assessment is therefore unclear. METHODS: We conducted a systematic review and meta-analysis of the prevalence of passive ideation, its psychiatric comorbidity, associated sociodemographic characteristics, as well as psychological and environmental correlates. For reference, pooled effects were also calculated for direct comparisons of passive and active ideation with respect to potential correlates. Relevant articles published since inception to 9 September 2019 were identified through a systematic search of MEDLINE and PsycINFO. RESULTS: A total of 86 studies were included in this review. The prevalence of passive ideation was high across sample types, ranging from 5.8% for 1-year prevalence to 10.6% for lifetime prevalence in the general population. Passive ideation was strongly associated with sexual minority status, psychiatric comorbidity, psychological characteristics implicated in risk, and suicide attempts. Preliminary evidence exists for a large association with suicide deaths. The effect sizes for individual correlates of passive and active ideation were largely equivalent and mostly non-significant in head-to-head comparisons. CONCLUSIONS: Passive ideation is a prevalent clinical phenomenon associated with significant psychiatric comorbidity. Current evidence also suggests notable similarities exist between passive and active ideation in terms of psychiatric comorbidity and psychological and other characteristics traditionally associated with risk.


Asunto(s)
Trastornos Mentales/epidemiología , Ideación Suicida , Intento de Suicidio/estadística & datos numéricos , Comorbilidad , Humanos , Prevalencia , Factores de Riesgo
9.
Brain Behav Immun ; 88: 308-324, 2020 08.
Artículo en Inglés | MEDLINE | ID: mdl-32229219

RESUMEN

We assessed the gut microbiota of 90 American young adults, comparing 43 participants with major depressive disorder (MDD) and 47 healthy controls, and found that the MDD subjects had significantly different gut microbiota compared to the healthy controls at multiple taxonomic levels. At the phylum level, participants with MDD had lower levels of Firmicutes and higher levels of Bacteroidetes, with similar trends in the at the class (Clostridia and Bacteroidia) and order (Clostridiales and Bacteroidales) levels. At the genus level, the MDD group had lower levels of Faecalibacterium and other related members of the family Ruminococcaceae, which was also reduced relative to healthy controls. Additionally, the class Gammaproteobacteria and genus Flavonifractor were enriched in participants with MDD. Accordingly, predicted functional differences between the two groups include a reduced abundance of short-chain fatty acid production pathways in the MDD group. We also demonstrated that the magnitude of taxonomic changes was associated with the severity of depressive symptoms in many cases, and that most changes were present regardless of whether depressed participants were taking psychotropic medications. Overall, our results support a link between MDD and lower levels of anti-inflammatory, butyrate-producing bacteria, and may support a connection between the gut microbiota and the chronic, low-grade inflammation often observed in MDD patients.


Asunto(s)
Trastorno Depresivo Mayor , Microbioma Gastrointestinal , Antiinflamatorios , Bacterias , Depresión , Heces , Humanos , Adulto Joven
10.
J Child Psychol Psychiatry ; 60(10): 1133-1141, 2019 10.
Artículo en Inglés | MEDLINE | ID: mdl-31328281

RESUMEN

BACKGROUND: Suicide is the second leading cause of death among adolescents. The purpose of this study was to test a family-focused outpatient cognitive behavioral treatment (F-CBT) protocol for depressed adolescents following psychiatric hospitalization for a suicide attempt or suicidal ideation, and who had a co-occurring risk factor (suicidal behavior prior to the index admission, nonsuicidal self-injury, and/or a substance use disorder), in a randomized Phase 2 efficacy trial. METHOD: One hundred forty-seven adolescents (mean age = 14.91 years; 76.2% female, 85.5% White) and their families, recruited primarily from an inpatient psychiatric hospitalization program, were randomly assigned to F-CBT or enhanced treatment-as-usual (E-TAU). A suicide attempt was the primary outcome variable. Depression, suicidal ideation, and nonsuicidal self-injury are also reported here. Assessments were completed at pretreatment as well as 6, 12, and 18-months postrandomization (Trial Registration ClinicalTrials.gov Identifier: NCT01732601). RESULTS: In the sample as a whole, rates of attempts decreased from 20% at 6 months to 9% at 12 months to 7% at 18 months. There was no evidence of a significant difference between treatment arms in rates of suicide attempts, major depressive disorder, suicidal ideation, or nonsuicidal self-injury at any of the postrandomization assessment points. CONCLUSIONS: Though F-CBT was associated with reductions in suicidality, depression, and nonsuicidal self-injury, E-TAU showed an equally strong effect. Greater frequency of F-CBT treatment sessions, particularly at the start of care, and alternative approaches to transitioning to care at 12 months, may be necessary when using F-CBT with this population.


Asunto(s)
Terapia Cognitivo-Conductual , Trastorno Depresivo Mayor/terapia , Evaluación de Resultado en la Atención de Salud , Conducta Autodestructiva/terapia , Intento de Suicidio/prevención & control , Adolescente , Femenino , Estudios de Seguimiento , Humanos , Masculino , Factores de Riesgo , Ideación Suicida
11.
J Clin Child Adolesc Psychol ; 48(6): 934-946, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31560584

RESUMEN

Recent advances in real-time monitoring technology make this an exciting time to study risk for suicidal thoughts and behaviors among youth. Although there is good reason to be excited about these methods, there is also reason for caution in adopting them without first understanding their limitations. In this article, we present several broad future directions for using real-time monitoring among youth at risk for suicide focused around three broad themes: novel research questions, novel analytic methods, and novel methodological approaches. We also highlight potential technical, logistical, and ethical challenges with these methodologies, as well as possible solutions to these challenges.


Asunto(s)
Suicidio/psicología , Adolescente , Femenino , Humanos , Masculino , Factores de Riesgo
12.
Psychol Med ; 53(1): 284-285, 2023 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-34334148
13.
Child Psychiatry Hum Dev ; 49(4): 505-511, 2018 08.
Artículo en Inglés | MEDLINE | ID: mdl-29164350

RESUMEN

This study aimed to: (1) examine rates of readmission among young children with oppositional defiant disorder (ODD) following discharge from a psychiatric partial hospital treatment program, and (2) examine child factors (i.e., age, sex, co-occurring diagnoses, suicidality) and family factors (i.e., parental depression, stress) as prospective predictors of readmission. Participants were 261 children (ages 3-7 years) who entered the study at the time of their initial program admission and who met DSM-IV criteria for ODD. Of these 261 children, 61 (23%) were subsequently readmitted, with most readmissions occurring within 1 year. Cox regression survival analyses demonstrated that younger child age, child suicidal thoughts and behavior, and child PTSD diagnosis were associated with decreased time to readmission. Findings suggest that young children with ODD who present with co-occurring suicidality or PTSD are at risk for readmission following partial hospitalization, with implications for treatment and aftercare planning.


Asunto(s)
Déficit de la Atención y Trastornos de Conducta Disruptiva/terapia , Readmisión del Paciente , Ideación Suicida , Déficit de la Atención y Trastornos de Conducta Disruptiva/psicología , Niño , Preescolar , Depresión/psicología , Manual Diagnóstico y Estadístico de los Trastornos Mentales , Femenino , Humanos , Masculino , Estudios Prospectivos , Factores de Riesgo
14.
Cogn Emot ; 31(2): 269-283, 2017 02.
Artículo en Inglés | MEDLINE | ID: mdl-26558316

RESUMEN

Optimism has been conceptualised variously as positive expectations (PE) for the future , optimistic attributions , illusion of control , and self-enhancing biases. Relatively little research has examined these multiple dimensions of optimism in relation to psychological and physical health. The current study assessed the multi-dimensional nature of optimism within a prospective vulnerability-stress framework. Initial principal component analyses revealed the following dimensions: PEs, Inferential Style (IS), Sense of Invulnerability (SI), and Overconfidence (O). Prospective follow-up analyses demonstrated that PE was associated with fewer depressive episodes and moderated the effect of stressful life events on depressive symptoms. SI also moderated the effect of life stress on anxiety symptoms. Generally, our findings indicated that optimism is a multifaceted construct and not all forms of optimism have the same effects on well-being. Specifically, our findings indicted that PE may be the most relevant to depression, whereas SI may be the most relevant to anxiety.


Asunto(s)
Acontecimientos que Cambian la Vida , Optimismo/psicología , Resiliencia Psicológica , Ansiedad/psicología , Depresión/psicología , Femenino , Humanos , Masculino , Modelos Psicológicos , Análisis de Componente Principal , Estudios Prospectivos , Adulto Joven
15.
Depress Anxiety ; 33(6): 541-8, 2016 06.
Artículo en Inglés | MEDLINE | ID: mdl-26393336

RESUMEN

BACKGROUND: Although several risk factors for suicidal ideation (SI) have been identified in the research literature, there is a pressing need for studies evaluating markers of risk differentiating ideators from people who have attempted. According to the interpersonal theory of suicide, habituation to painful or provocative experiences increases one's acquired capability for suicide, a necessary component for the transition from SI to attempts. This theory further posits that the acquired capability for suicide should be unrelated to risk for SI. This study tested this theory by examining injection drug use, relative to less painful means of drug use, in relation to SI, suicide plans, and suicide attempts. METHODS: Data were drawn from the National Survey on Drug Use and Health (NSDUH), a nationally representative survey conducted annually. Participants included 10,203 adults with a history of injectable drug use and major depression. RESULTS: Injection drug use was positively associated with suicide attempts (Odds Ratio [OR] = 1.66, 95% confidence interval [CI] = 1.18-2.34), but not SI or suicide plans in the full sample. Injection drug use was also associated with suicide attempts (OR = 1.64, 95% CI = 1.14-2.35), but not plans, among ideators. Lastly, injection drug use was associated with the suicide attempts among suicide planners (OR = 1.76, 95% CI = 1.01-3.06). All analyses included sex, age, race/ethnicity, family income, substance use disorder symptom severity for injectable drugs, and depressive symptom severity as covariates. CONCLUSIONS: Consistent with the interpersonal theory of suicide, injection drug use was associated with specific risk for suicide attempts but not SI or suicide plans.


Asunto(s)
Trastorno Depresivo Mayor/epidemiología , Abuso de Sustancias por Vía Intravenosa/epidemiología , Ideación Suicida , Intento de Suicidio/estadística & datos numéricos , Adulto , Femenino , Humanos , Masculino , Estados Unidos/epidemiología , Adulto Joven
16.
J Clin Psychol ; 72(9): 947-55, 2016 09.
Artículo en Inglés | MEDLINE | ID: mdl-27038095

RESUMEN

PURPOSE: A popular way to attempt to discern causality in clinical psychology is through mediation analysis. However, mediation analysis is sometimes applied to research questions in clinical psychology when inferring causality is impossible. This practice may soon increase with new, readily available, and easy-to-use statistical advances. Thus, we here provide a heuristic to remind clinical psychological scientists of the assumptions of mediation analyses. APPROACH: We describe recent statistical advances and unpack assumptions of causality in mediation, underscoring the importance of time in understanding mediational hypotheses and analyses in clinical psychology. Example analyses demonstrate that statistical mediation can occur despite theoretical mediation being improbable. CONCLUSION: We propose a delineation of mediational effects derived from cross-sectional designs into the terms temporal and atemporal associations to emphasize time in conceptualizing process models in clinical psychology. The general implications for mediational hypotheses and the temporal frameworks from within which they may be drawn are discussed.


Asunto(s)
Modelos Psicológicos , Modelos Estadísticos , Psicología Clínica/métodos , Proyectos de Investigación/normas , Humanos
17.
Pers Individ Dif ; 74: 106-111, 2015 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-26246650

RESUMEN

OBJECTIVE: The purpose of this study is to assess the potential unique and relative mediating effects of three interpersonal risk factors (i.e., excessive reassurance-seeking [ERS], negative feedback seeking [NFS], and rejection sensitivity [RS]) in the relationship between childhood emotional abuse (CEA) and depressive symptoms. METHOD: One hundred eighty-five undergraduates were followed over a four-month interval. Participants completed assessments of childhood abuse history, ERS, NFS, and RS, and depressive symptoms at baseline, as well as depressive symptoms at four-month followup. RESULTS: Findings from single-mediator analyses indicated that RS and NFS, but not ERS, mediated the relationship between CEA and prospective depressive symptoms, after accounting for childhood sexual and physical abuse, as well as baseline depressive symptoms. In our multi-mediator model, only RS remained a significant mediator of the relationship between CEA and prospective depressive symptoms. CONCLUSIONS: The current study provides preliminary evidence that negative behavioral styles may function as a mechanism linking prior experiences of CEA to subsequent depressive symptoms. Clinical implications of these findings suggest that targeting maladaptive behavioral tendencies, particularly RS, may be an effective adjunct in behavioral modification treatments of CEA victims at risk for depression.

18.
Br J Psychiatry ; 204: 262-6, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-24115346

RESUMEN

BACKGROUND: Previous research into religious service attendance as a protective factor against suicide has been conducted only retrospectively, with psychological autopsy studies using proxy informants of completed suicide, rather than prospectively, with completed suicide as a dependent variable. AIMS: To determine whether individuals who frequently attended religious services were less likely to die by suicide than those who did not attend so frequently. METHOD: We analysed data from a nationally representative sample (n = 20 014), collected in the USA between 1988 and 1994, and follow-up mortality data from baseline to the end of 2006. RESULTS: Cox proportional hazard regression analysis indicated that those who frequently attended religious services were less likely to die by suicide than those who did not attend, after accounting for the effects of other relevant risk factors. CONCLUSIONS: Frequent religious service attendance is a long-term protective factor against suicide.


Asunto(s)
Religión y Psicología , Religión , Suicidio/psicología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Persona de Mediana Edad , Encuestas Nutricionales , Estudios Prospectivos , Factores de Riesgo , Clase Social , Suicidio/estadística & datos numéricos , Estados Unidos , Adulto Joven
19.
Compr Psychiatry ; 55(5): 1077-84, 2014 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-24793560

RESUMEN

OBJECTIVE: Males are more likely than females to die by all forms of violent death, including suicide. The primary purpose of the present study was to explore whether the gender difference in suicide rates is largely accounted for by males' general greater tendency to experience violent deaths. The current study examined gender and age differences in suicides and other violent deaths, using data from a population-based surveillance system. METHOD: Pearson's chi-square tests and logistic regression analyses were conducted with data for 32,107 decedents in the 2003-2005 National Violent Death Reporting System (NVDRS). Decedents were categorized by gender, age, and death by suicide versus other violent means. RESULTS: When suicides were examined in the greater context of violent death, the total proportion of violent deaths due to suicide did not differ across gender. When deaths were examined by age group, after controlling for ethnicity, marital status, and U.S. location in which the death occurred, males in early to mid childhood were significantly more likely than same-aged females to die by suicide relative to all other violent deaths. The portion of deaths due to suicide was for the most part equal across both genders in late childhood, young adulthood, and mid-adulthood. Older males were more likely than older females to die by suicide relative to other violent deaths. CONCLUSION: Our findings suggest that that the risk of dying by suicide relative to other violent deaths may be more pronounced at certain developmental stages for each gender. This knowledge may be valuable in tailoring prevention strategies.


Asunto(s)
Suicidio/estadística & datos numéricos , Violencia/estadística & datos numéricos , Adolescente , Adulto , Factores de Edad , Anciano , Niño , Preescolar , Femenino , Humanos , Lactante , Recién Nacido , Masculino , Persona de Mediana Edad , Factores Sexuales , Suicidio/etnología , Estados Unidos/epidemiología , Violencia/etnología , Adulto Joven
20.
J Clin Psychol ; 70(3): 209-23, 2014 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-23800893

RESUMEN

OBJECTIVE: Stressful life events are associated with an increase in depressive symptoms and the onset of major depression. Importantly, research has shown that the role of stress changes over the course of depression. The present study extends the current literature by examining the effects of early life stress on emotional reactivity to current stressors. METHOD: In a multiwave study (N = 281, mean age = 18.76; 68% female), we investigated the proximal changes that occur in depressive symptoms when individuals are faced with life stress and whether a history of childhood emotional abuse moderates this relationship. RESULTS: Results support the stress sensitivity hypothesis for early emotional abuse history. Individuals with greater childhood emotional abuse severity experienced greater increases in depressive symptoms when confronted with current dependent stressors, controlling for childhood physical and sexual abuse. CONCLUSIONS: This study highlights the importance of emotional abuse as an indicator for reactivity to stressful life events.


Asunto(s)
Maltrato a los Niños/psicología , Depresión/psicología , Emociones/fisiología , Acontecimientos que Cambian la Vida , Estrés Psicológico/psicología , Adolescente , Adulto , Niño , Femenino , Humanos , Masculino , Estudios Prospectivos , Escalas de Valoración Psiquiátrica , Adulto Joven
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