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1.
Clin Psychol Sci ; 12(2): 320-343, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38571551

RESUMO

Bicultural competence, the ability to navigate bicultural demands, is a salient developmental competency for youth of color linked with positive adjustment. This study investigated how discrimination experiences informed developmental trajectories of behavioral and affective bicultural competence across youth's adaptation from high school to college, and how these biculturalism trajectories predicted later adjustment (i.e., internalizing symptoms and binge drinking). Data were collected between 2016 through 2020 and included 206 U.S. Latino youth (Mage=17.59, 64% female, 85% Mexican origin, 11% first and 62% second generation immigrants). Linear latent growth analyses revealed that youth who experienced greater time-varying discrimination demonstrated lower concurrent behavioral and affective bicultural competence. Higher behavioral bicultural competence intercepts were associated with fewer internalizing symptoms in the third college year. No other significant associations emerged for internalizing symptoms or binge drinking. These findings have implications for mental health equity among Latino youth during a critical period of psychopathology onset.

2.
Am Psychol ; 2024 Mar 18.
Artigo em Inglês | MEDLINE | ID: mdl-38497781

RESUMO

Loneliness is gaining attention globally as a public health issue because elevated loneliness increases one's risk for depression, compromised immunity, chronic illness, and mortality. Our objective is to zoom into how loneliness has historically evolved through midlife and investigate whether elevations in loneliness are confined to the United States or are similarly transpiring across peer European nations. We use harmonized data on loneliness from nationally representative longitudinal panel surveys from the United States and 13 European nations to directly quantify similarities and differences in historical change of midlife loneliness trajectories. Compared with any other European nation/region, overall levels of loneliness in the United States are consistently higher by a magnitude of 0.3-0.8 SDs. Middle-aged adults in the United States, England, and Mediterranean Europe today report higher levels of loneliness than earlier born cohorts, whereas no historical changes (if not historically lower levels) were observed in Continental and Nordic Europe. Our discussion focuses on possible reasons for cross-national differences in midlife loneliness, including cultural factors, social and economic inequalities, and differences in social safety nets. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

3.
Sleep ; 47(1)2024 01 11.
Artigo em Inglês | MEDLINE | ID: mdl-37798133

RESUMO

STUDY OBJECTIVES: The teenage increase in sleepiness is not simply a response to decreasing nighttime sleep duration. Daytime sleepiness increases across adolescence even when prior sleep duration is held constant. Here we determine the maturational trend in daytime sleep propensity assessed with the multiple sleep latency test (MSLT) and assess the trend's relation to pubertal maturation and changes in the sleep electroencephalogram. We also evaluate whether the relation of daytime sleep propensity to prior sleep duration changes between ages 10 and 23 years. METHODS: Participants (n = 159) entered the study between ages 9.8 and 22.8 years and were studied annually for up to 3 years. Annually, participants kept each of three sleep schedules in their homes: 7, 8.5, and 10 hours in bed for 4 consecutive nights with polysomnography on nights 2 and 4. MSLT-measured daytime sleep propensity was assessed in the laboratory on the day following the fourth night. RESULTS: A two-part linear spline model described the maturation of daytime sleep propensity. MSLT sleep likelihood increased steeply until age 14.3 years, after which it did not change significantly. The maturational trend was strongly associated with the adolescent decline in slow-wave (delta, 1-4 Hz) EEG power during NREM sleep and with pubertal maturation assessed with Tanner stage measurement of breast/genital development. The effect of prior sleep duration on sleep likelihood decreased with age. CONCLUSIONS: Adolescent brain changes related to pubertal maturation and those reflected in the delta decline contribute to the adolescent increase in daytime sleep propensity.


Assuntos
Distúrbios do Sono por Sonolência Excessiva , Sono , Humanos , Adolescente , Sono/fisiologia , Polissonografia , Eletroencefalografia , Vigília/fisiologia
4.
Pers Soc Psychol Bull ; : 1461672231191362, 2023 Aug 11.
Artigo em Inglês | MEDLINE | ID: mdl-37571841

RESUMO

Moral foundations theory proposes five domains of morality-harm, fairness, loyalty, purity, and authority. Endorsement of these moral domains is assessed by the Moral Foundations Questionnaire (MFQ), a 30-item scale that has undergone intense measurement scrutiny. Across five samples (N = 464,229), we show greatly improved model fit using a Bifactor model that accounts for two kinds of items in the MFQ: judgment and relevance. We add to this space by demonstrating how using this improved measurement structure changes the strength of correlations of the moral foundations with numerous attitudes, cognitive styles, and moral decision-making. Future research should continue to identify what, if anything, the relevance and judgment factors might substantively capture over and above the substantive domains of moral foundations. In the meantime, we recommend that researchers use the Bifactor model for its improved model structure, rather than dropping the relevant items as some have proposed.

5.
Drug Alcohol Depend ; 249: 110837, 2023 08 01.
Artigo em Inglês | MEDLINE | ID: mdl-37356229

RESUMO

BACKGROUND: Simultaneous alcohol and cannabis use (SAM) is associated with riskier drinking. However, little is known regarding mechanisms of risk during drinking episodes. The current study tested whether subjective responses to simultaneous vs. alcohol-only use (i.e., high arousal positive/reward, high arousal negative/aggression, low arousal positive/relaxation, low arousal negative/impairment) were mechanisms through which SAM use was associated with daily drinking. METHODS: Emerging adults who co-use alcohol and cannabis (N=85) completed 21 days of ecological momentary assessment with drink-contingent reports during drinking episodes. Participants reported on their simultaneous use and current subjective effects during drink reports and past-night total drinks consumed and negative consequences experienced the next morning. Three-level multilevel models (momentary, daily, person level) tested whether SAM use predicted subjective responses, and whether subjective responses mediated associations between SAM use, heavier drinking and negative consequences. RESULTS: At the momentary and day-level, SAM (vs. alcohol-only) use predicted increased high arousal positive/rewarding, low arousal positive/relaxing, and low arousal negative/impairing subjective effects. SAM use indirectly predicted heavier day-level drinking and further negative consequences through high arousal positive/rewarding response. SAM use also indirectly predicted day-level negative consequences through low arousal negative/impairing response. At the person-level, more frequent SAM use predicted higher person-average high arousal positive/rewarding and low arousal positive/relaxing responses, and high arousal positive/rewarding response mediated relation between SAM frequency and heavier drinking. CONCLUSIONS: Simultaneous use was associated with reward, relief, and impairment, and reward and impairment were mechanisms of risk between SAM use and riskier drinking. Findings may inform theory and just-in-time interventions seeking to reduce alcohol misuse.


Assuntos
Alcoolismo , Cannabis , Adulto , Humanos , Alcoolismo/epidemiologia , Consumo de Bebidas Alcoólicas/epidemiologia , Etanol , Recompensa
6.
Clin Psychol Sci ; 11(3): 509-525, 2023 May.
Artigo em Inglês | MEDLINE | ID: mdl-37206479

RESUMO

Empathic accuracy, the ability to accurately understand others' emotions, is typically viewed as beneficial for mental health. However, empathic accuracy may be problematic when a close relational partner is depressed because it promotes shared depression. Across two studies, we measured empathic accuracy using laboratory tasks that capture the ability to rate others' emotional valence accurately over time: first, in a sample of 156 neurotypical married couples (Study 1; Total N=312), and then in a sample of 102 informal caregivers of individuals with dementia (Study 2). Across both studies, the association between empathic accuracy and depressive symptoms varied as a function of a partner's level of depressive symptoms. Greater empathic accuracy was associated with (a) fewer depressive symptoms when a partner lacked depressive symptoms, but (b) more depressive symptoms when a partner had high levels of depressive symptoms. Accurately detecting changes in others' emotional valence may underpin shared depressive symptoms.

7.
Sleep ; 46(5)2023 05 10.
Artigo em Inglês | MEDLINE | ID: mdl-36916319

RESUMO

STUDY OBJECTIVES: Limiting spindle activity via sleep restriction could explain some of the negative cognitive effects of sleep loss in adolescents. The current study evaluates how sleep restriction affects sleep spindle number, incidence, amplitude, duration, and wave frequency and tests whether sleep restriction effects on spindles change across the years of adolescence. The study determines whether sleep restriction effects on daytime sleepiness, vigilance, and cognition are related to changes in sleep spindles. METHODS: In each year of this 3-year longitudinal study, 77 participants, ranging in age from 10 to 16 years, each completed three different time in bed (TIB) schedules: 7, 8.5, or 10 hours in bed for 4 consecutive nights. A computer algorithm detected and analyzed sleep spindles in night four central and frontal electroencephalogram. Objective and self-reported daytime sleepiness and cognition were evaluated on the day following the 4th night. RESULTS: For 7 versus 10 hours TIB average all-night frontal and central spindle counts were reduced by 35% and 32%, respectively. Reducing TIB also significantly decreased spindle incidence in the first 5 hours of non-rapid eye movement sleep, produced small but significant reductions in spindle amplitude, and had little to no effect on spindle duration and spindle wave frequency. Sleep restriction effects did not change with age. The reductions in spindle count and incidence were related to daytime sleepiness on the following day but were not related to working memory. CONCLUSIONS: The sleep loss effects on daytime functioning in adolescents are partially mediated by reduced sleep spindles impacting daytime sleepiness.


Assuntos
Distúrbios do Sono por Sonolência Excessiva , Privação do Sono , Humanos , Adolescente , Criança , Privação do Sono/complicações , Privação do Sono/psicologia , Estudos Longitudinais , Polissonografia , Sono , Cognição
8.
Dev Psychopathol ; : 1-17, 2023 Feb 03.
Artigo em Inglês | MEDLINE | ID: mdl-36734230

RESUMO

The transition to college is a time of increased opportunity and stress spanning multiple domains. Adolescents who encounter significant stress during this transition may be vulnerable to adverse outcomes due to a "wear and tear" of the hypothalamic pituitary adrenal (HPA) axis. Latino/a students may be particularly at-risk for heightened stress exposure due to experiences of both minority-specific and general life stress. Despite this, little is known regarding the cumulative impact of multiple stressors on Latino/a students' HPA axis functioning. The present study employed a "multi-risk model" approach to examine additive, common, and cumulative effects of multiple stress forms (general, academic, social, financial, bicultural, ethnic/racial discrimination) on diurnal cortisol in a sample of first-year Latino/a college students (N = 196; 64.4% female; Mage = 18.95). Results indicated that no stress forms were additively associated with the cortisol awakening response (CAR), but general stress was associated with a flatter diurnal cortisol slope (DCS) and bicultural stress was linked with a steeper DCS. A college stress latent factor was associated with a lower CAR, whereas a latent factor of discrimination was not associated with diurnal cortisol. Cumulative risk was linked with a lower CAR. Findings highlight the physiological correlates of various stressors experienced by Latino/a college students.

9.
Psychol Aging ; 38(3): 230-246, 2023 May.
Artigo em Inglês | MEDLINE | ID: mdl-36795424

RESUMO

Middle-aged adults are a central pillar of society because they comprise large segments of the workforce and bridge younger and older generations. Given the significant role that middle-aged adults play for the greater good of society, more research is warranted to evaluate in which ways adversity could accumulate or pile-up to impact pertinent outcomes. We used data from a sample of middle-aged adults (n = 317, age 50-65 at baseline, 55% women) who were assessed monthly for a period of 2 years to examine whether the accumulation of adversity was predictive of depressive symptoms, life satisfaction, and character strengths (generativity, gratitude, the presence of meaning, and search for meaning). Greater accumulation of adversity was associated with reporting more depressive symptoms, lower life satisfaction, and the lower presence of meaning and the effects remained for depressive symptoms when accounting for concurrent adversity. More concurrent adversity was associated with reporting more depressive symptoms and lower life satisfaction and lower levels of generativity, gratitude, and the presence of meaning. Analyses that targeted specific domains of adversity showed that the accumulation of adversity associated with close family members (i.e., spouse/partner, children, and parents), and financial, and work domains showed the strongest (negative) associations across each outcome. Our findings demonstrate that monthly adversity take its toll on pertinent midlife outcomes and points to future research targeting mechanisms underlying our findings as well as resources that promote positive outcomes. (PsycInfo Database Record (c) 2023 APA, all rights reserved).


Assuntos
Envelhecimento , Depressão , Humanos , Feminino , Pessoa de Meia-Idade , Idoso , Masculino , Família , Pais , Satisfação Pessoal
10.
J Exp Psychol Gen ; 152(3): 780-793, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-36095169

RESUMO

There is a need to understand the components of self-regulation, given its link to nearly every domain of functioning across the life span. This study examined the etiological underpinnings of covariance between measures of executive functioning (EF) and effortful control (EC) in middle childhood. The extent that genetic and environmental factors explain the association between EF and EC is unknown. Families were drawn from a longitudinal twin study (N = 894 twins; Mage = 8.87 years, SD = 1.10; 51.4% female; 46.8% non-Hispanic White, 28% Latino/a/x) and twins completed EF tasks during a home visit (Flanker Task, Continuous Performance Task, and Digit Span Backward) and primary caregivers (93.8% mothers) reported on their twins' EC (Attentional Focusing and Inhibitory Control). Univariate twin models showed additive genetic and nonshared environmental influences on the Flanker Task, Continuous Performance Task, Digit Span Backward, and parent-reported Inhibitory Control, and dominant genetic influences were implicated in parent-reported Attentional Focusing. Bivariate twin models revealed that additive genetic influences explained the small covariance between EF and EC. Executive attention could explain the genetic covariance between measures of EF and EC. This study suggests that EF and EC tap into the same underlying self-regulation construct, with weak correlations between constructs being attributed to measurement, rather than conceptual, differences. Elucidating the overlap between EF and EC can bring researchers closer to understanding how best to foster adaptive self-regulation. (PsycInfo Database Record (c) 2023 APA, all rights reserved).


Assuntos
Função Executiva , Gêmeos , Criança , Feminino , Humanos , Masculino , Atenção/fisiologia , Função Executiva/fisiologia , Mães , Pais , Gêmeos/genética
11.
Dev Psychol ; 58(10): 1849-1862, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-35816590

RESUMO

Early life stress, daily life experiences, and the stress responsive hypothalamic-pituitary-adrenal (HPA) axis have each been examined as predictors of the development of psychopathology. Rarely have researchers attempted to understand the covariation or interaction among these stress domains using a longitudinal design in the prediction of symptoms of internalizing psychopathology, particularly during childhood. This study examined early family stress, daily interpersonal stress, indicators of diurnal cortisol, and internalizing symptoms in a racially/ethnically and socioeconomically diverse sample of twins (N = 970 children; Mage at outcome = 9.73; 52% female; 23.7% Hispanic/Latino, 58.8% White; 30% below middle class; Lemery-Chalfant et al., 2019). An additive model of stress, a stress mediation model, and a stress sensitization framework model each delineated potential pathways linking stress and internalizing symptoms. Supporting additive pathways, multilevel models showed that all 3 stress indicators uniquely predicted internalizing symptoms. There was a significant indirect path from early family stress to 9 year internalizing symptoms through interpersonal stress, supporting stress mediation. Family stress moderated the association between interpersonal stress and internalizing symptoms, though not in the direction that would support stress sensitization. Child stress, including daily interpersonal stress and HPA axis activity, and internalizing symptoms are prevalent and family stress is a significant precursor to child internalizing symptoms across child development. (PsycInfo Database Record (c) 2022 APA, all rights reserved).


Assuntos
Sistema Hipotálamo-Hipofisário , Sistema Hipófise-Suprarrenal , Criança , Feminino , Humanos , Hidrocortisona/metabolismo , Sistema Hipotálamo-Hipofisário/metabolismo , Masculino , Sistema Hipófise-Suprarrenal/metabolismo , Saliva/metabolismo , Estresse Fisiológico , Estresse Psicológico/metabolismo
12.
J Pers Soc Psychol ; 123(5): 983-1003, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-35099204

RESUMO

The Positivity Resonance Theory of coexperienced positive affect describes moments of interpersonal connection characterized by shared positive affect, caring nonverbal synchrony, and biological synchrony. The construct validity of positivity resonance and its longitudinal associations with health have not been tested. The current longitudinal study examined whether positivity resonance in conflict interactions between 154 married couples predicts health trajectories over 13 years and longevity over 30 years. We used couples' continuous ratings of affect during the interactions to capture coexperienced positive affect and continuous physiological responses to capture biological synchrony between spouses. Video recordings were behaviorally coded for coexpressed positive affect, synchronous nonverbal affiliation cues (SNAC), and behavioral indicators of positivity resonance (BIPR). To evaluate construct validity, we conducted a confirmatory factor analysis to test a latent factor of positivity resonance encompassing coexperienced positive affect, coexpressed positive affect, physiological linkage of interbeat heart intervals, SNAC, and BIPR. The model showed excellent fit. To evaluate associations with health and longevity, we used dyadic latent growth curve modeling and Cox proportional hazards modeling, respectively, and found that greater latent positivity resonance predicted less steep declines in health and increased longevity. Associations were robust when accounting for initial health symptoms, sociodemographic characteristics, health-related behaviors, and individually experienced positive affect. We repeated health and longevity analyses, replacing latent positivity resonance with BIPR, and found consistent results. Findings validate positivity resonance as a multimodal construct, support the utility of the BIPR measure, and provide initial evidence for the characterization of positivity resonance as a positive health behavior. (PsycInfo Database Record (c) 2022 APA, all rights reserved).


Assuntos
Longevidade , Cônjuges , Humanos , Estudos Longitudinais
13.
J Am Heart Assoc ; 11(3): e022006, 2022 02.
Artigo em Inglês | MEDLINE | ID: mdl-35072514

RESUMO

Background Anxiety is linked to elevated risk of cardiometabolic disease onset, but the underlying mechanisms remain unclear. We examined the prospective association of 2 anxiety facets, neuroticism and worry, with cardiometabolic risk (CMR) trajectories for 4 decades. Methods and Results The sample comprised 1561 men from an ongoing adult male cohort. In 1975, healthy men (mean age, 53 years [SD, 8.4 years]) completed the Eysenck Personality Inventory-Short Form neuroticism scale and a Worries Scale. Seven CMR biomarkers were assessed every 3 to 5 years. The CMR score was the number of biomarkers categorized as high-risk based on established cut points or medication use. Using mixed effects regression, we modeled CMR trajectories over age and evaluated their associations with neuroticism and worry. Using Cox regression, we examined associations of neuroticism and worry with risk of having ≥6 CMR high-risk biomarkers through 2015. CMR increased at 0.8 markers per decade from age 33 to 65 years, at which point men had an average of 3.8 high-risk markers, followed by a slower increase of 0.5 markers per decade. Higher neuroticism (B=0.08; 95% CI, 0.02-0.15) and worry levels (B=0.07; 95% CI, 0.001-0.13) were associated with elevated CMR across time, and with 13% (95% CI, 1.03-1.23) and 10% (95% CI, 1.01-1.20) greater risks, respectively, of having ≥6 high-risk CMR markers, adjusting for potential confounders. Conclusions By middle adulthood, higher anxiety levels are associated with stable differences in CMR that are maintained into older ages. Anxious individuals may experience deteriorations in cardiometabolic health earlier in life and remain on a stable trajectory of heightened risk into older ages.


Assuntos
Transtornos de Ansiedade , Doenças Cardiovasculares , Adulto , Idoso , Ansiedade/epidemiologia , Transtornos de Ansiedade/epidemiologia , Biomarcadores , Doenças Cardiovasculares/diagnóstico , Doenças Cardiovasculares/epidemiologia , Humanos , Masculino , Pessoa de Meia-Idade , Neuroticismo
14.
Dev Sci ; 25(5): e13236, 2022 09.
Artigo em Inglês | MEDLINE | ID: mdl-35060244

RESUMO

Executive functions (EF) are key predictors of long-term success that develop rapidly in early childhood. However, EF's developmental trajectory from preschool to kindergarten is not fully understood due to conceptual ambiguity (e.g., whether it is a single construct or multiple related constructs) and methodological limitations (e.g., previous work has primarily examined linear growth). Whether and how this trajectory differs based on characteristics of children and their families also remains to be characterized. In a primarily low-income, racially and ethnically diverse, typically developing, urban sample, the present study employed confirmatory factor analyses to examine the construct of EF and latent growth curve modeling to examine nonlinear growth across five time points. Results indicated that the development of a single EF construct with partial measurement invariance across time points was best characterized as nonlinear, with disproportionately more growth during the preschool year. There was individual variability in EF trajectories, such that children with higher EF at preschool entry showed relatively steeper growth during preschool compared to low-EF peers. However, children with less EF growth in preschool had steeper growth in kindergarten, attenuating the gains of high-EF preschoolers and resulting in some convergence in EF by the end of kindergarten. Findings have implications for (1) examining EF development in early childhood with more specificity in future studies, (2) informing the timing of EF interventions in early childhood, and (3) identifying children for whom such interventions might be especially beneficial.


Assuntos
Desenvolvimento Infantil , Função Executiva , Logro , Criança , Pré-Escolar , Escolaridade , Humanos , Instituições Acadêmicas
15.
J Gerontol B Psychol Sci Soc Sci ; 77(8): 1394-1405, 2022 08 11.
Artigo em Inglês | MEDLINE | ID: mdl-34905001

RESUMO

OBJECTIVES: Our objective is to examine whether lifetime adversity has either a "steeling effect" or "cumulative disadvantage effect" on the consequences of monthly adversity on psychological well-being in middle-aged adults. An exploratory step was to examine whether such associations differed based on the domain of adversity (personal, family/friend, bereavement, social-environmental, and relationship). METHOD: Multilevel modeling was applied to data from a sample of participants in midlife (n = 358, ages 50-65, 54% women) who were assessed monthly for 2 years. RESULTS: Lifetime adversity did not show steeling effects, but instead appeared to exacerbate the impact of monthly adversity on psychological well-being, indicating cumulative disadvantage. On months where an adversity was reported, on average, individuals who reported more lifetime adversity showed stronger increases in depressive symptoms, anxiety, and negative affect and decreases in positive affect. There was limited evidence to suggest for steeling effects for life satisfaction. Reporting adversity in the personal, bereavement, social-environmental, and relationship domains showed the strongest associations with psychological well-being. DISCUSSION: Our discussion focuses on how lifetime adversity showed a cumulative disadvantage effect on the consequences of monthly adversity on psychological well-being. We also elaborate on future directions for research that include other conceptualizations of adversity and research to examine mechanisms underlying this relationship.


Assuntos
Transtornos de Ansiedade , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
16.
Multivariate Behav Res ; 57(4): 525-542, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-34236928

RESUMO

Over the past 40 years there have been great advances in the analysis of individual change and the analyses of between-person differences in change. While conditional growth models are the dominant approach, exploratory models, such as growth mixture models and structural equation modeling trees, allow for greater flexibility in the modeling of between-person differences in change. We continue to push for greater flexibility in the modeling of individual change and its determinants by combining growth mixture modeling with structural equation modeling trees to evaluate how measured covariates predict class membership using a recursive partitioning algorithm. This approach, referred to as growth mixture modeling with membership trees, is illustrated with longitudinal reading data from the Early Childhood Longitudinal Study with the MplusTrees package in R.


Assuntos
Algoritmos , Individualidade , Pré-Escolar , Humanos , Análise de Classes Latentes , Estudos Longitudinais , Leitura
17.
Pers Soc Psychol Bull ; 48(3): 478-492, 2022 03.
Artigo em Inglês | MEDLINE | ID: mdl-34018855

RESUMO

This research followed students over their first 2 years of college. During this time, many students lose sight of their goals, leading to poor academic performance and leaving STEM and business majors. This research was the first to examine longitudinal changes in future vividness, how those changes impact academic success, and identify sex differences in those relationships. Students who started college with clear pictures of graduation and life after graduation, and those who gained clarity, were more likely to believe in their academic abilities, and, in turn, earn a higher cumulative GPA, and persist in STEM and business. Compared to men, women reported greater initial vividness in both domains. In vividness of graduation, women maintained their advantage with no sex differences in how vividness changed. However, men grew in vividness of life after graduation while women remained stagnant. These findings have implications for interventions to increase academic performance and persistence.


Assuntos
Logro , Autoeficácia , Escolaridade , Feminino , Humanos , Estudos Longitudinais , Masculino , Universidades
18.
Multivariate Behav Res ; 57(4): 561-580, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-33523707

RESUMO

The literature on latent change score models does not discuss the importance of using a precise time metric when structuring the data. This study examined the influence of time metric precision on model estimation, model interpretation, and parameter estimate accuracy in bivariate LCS (BLCS) models through simulation. Longitudinal data were generated with a panel study where assessments took place during a given time window with variation in start time and measurement lag. The data were analyzed using precise time metric, where variation in time was accounted for, and then analyzed using coarse time metric indicating only that the assessment took place during the time window. Results indicated that models estimated using the coarse time metric resulted in biased parameter estimates as well as larger standard errors and larger variances and covariances for intercept and slope. In particular, the coupling parameter estimates-which are unique to BLCS models-were biased with larger standard errors. An illustrative example of longitudinal bivariate relations between math and reading achievement in a nationally representative survey of children is then used to demonstrate how results and conclusions differ when using time metrics of varying precision. Implications and future directions are discussed.


Assuntos
Logro , Leitura , Criança , Simulação por Computador , Humanos , Matemática
19.
J Stud Alcohol Drugs ; 82(5): 647-658, 2021 09.
Artigo em Inglês | MEDLINE | ID: mdl-34546912

RESUMO

OBJECTIVE: Several studies find between-person reciprocal relations between adolescent/college drinking and positive expectancies. However, drinking and expectancies from college into adulthood are largely unstudied, as are within-person associations. During these age periods, negative alcohol consequences may represent "teachable moments" via expectancy change. The current study tested the reciprocal effects of drinking, negative consequences, and expectancies from college age to adulthood. METHOD: Using data from a longitudinal study focused on familial alcohol disorder, age bands were created to model effects from college age (18-22) to young adulthood (23-28) and adulthood (29-34). Participants (N = 420) reported on their drinking, negative consequences, and expectancies across three waves (1995-2010). RESULTS: Negative consequences did not predict negative expectancies, but the random intercepts of the two were highly related. Young adult negative consequences predicted a within-person increase in adult heavy drinking. A within-person increase in college age negative expectancies indirectly predicted a within-person decrease in adult negative consequences through reduced young adult drinking, whereas within-person increases in college age positive expectancies indirectly predicted a within-person increase in adult negative consequences through heavier young adult drinking. CONCLUSIONS: Findings suggest that negative consequences were related to trait-level negative expectancies, even though prospective effects were not observed. Findings also suggest that college age negative expectancies were protective against future use and consequences, and this effect was unique to college age.


Assuntos
Consumo de Álcool na Faculdade , Consumo de Bebidas Alcoólicas , Adolescente , Adulto , Consumo de Bebidas Alcoólicas/epidemiologia , Humanos , Estudos Longitudinais , Estudantes , Universidades , Adulto Jovem
20.
Sleep ; 44(12)2021 12 10.
Artigo em Inglês | MEDLINE | ID: mdl-34331445

RESUMO

STUDY OBJECTIVES: This study examined associations between average and intraindividual trajectories of stress, sleep duration, and sleep quality in college students before, during, and after transitioning to online learning due to the COVID-19 pandemic. METHODS: One hundred and sixty-four first-year college students answered twice-weekly questionnaires assessing stress exposure and perception, sleep duration, and sleep quality from January until May, 2020 (N = 4269 unique observations). RESULTS: Multilevel growth modeling revealed that prior to distance learning, student stress was increasing and sleep duration and quality were decreasing. After transitioning online, students' stress exposure and perception trajectories immediately and continuously decreased; sleep quality initially increased but decreased over time; and sleep duration increased but then plateaued for the remainder of the semester. Days with higher stress exposure than typical for that student were associated with lower sleep quality, and both higher stress exposure and perception at the transition were linked with simultaneous lower sleep quality. Specific groups (eg, females) were identified as at-risk for stress and sleep problems. CONCLUSIONS: Although transitioning to remote learning initially alleviated college students' stress and improved sleep, these effects plateaued, and greater exposure to academic, financial, and interpersonal stressors predicted worse sleep quality on both daily and average levels. Environmental stressors may particularly dictate sleep quality during times of transition, but adaptations in learning modalities may help mitigate short-term detrimental health outcomes during global emergencies, even during a developmental period with considerable stress vulnerability. Future studies should examine longer-term implications of these trajectories on mental and physical health.


Assuntos
COVID-19 , Educação a Distância , Feminino , Humanos , Pandemias , SARS-CoV-2 , Sono , Qualidade do Sono , Estudantes
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