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Results for “Structural equation modeling”

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PubMed2000

A sociocultural stress and coping model for mental health outcomes among African American caregivers in Southern California.

A sociocultural stress and coping model to explain emotional distress among caregivers of family members who have dementia across ethnic and cultural groups is presented and explored in a sample of 41 African American and 128 non-African American caregivers. In this sample, African American caregivers reported lower levels of burden but equal levels of depression and anxiety. In the structural equation model, previous reports that African Americans' lower appraisal of caregiving as burdensome resulted in lower levels of emotional distress were confirmed. However, in this model, this pathway was counterbalanced by a tendency of African American caregivers to use emotion-focused coping and, therefore, increase emotional distress. African American caregivers were also younger and in poorer health, factors which tend to increase both burden and emotional distress outcomes. As suggested by the sociocultural stress and coping model, the influences of ethnic group variables on stress and coping processes are complex and multidirectional.

Activities of Daily Living↗

PubMed2002

Modeling attitudinal antecedents of nurses' decisions to report impaired colleagues.

Nurses whose professional functioning is impaired due to substance abuse represent a threat to the health and safety of patients, other health care staff, and themselves. The major means for identifying impaired nurses is nonimpaired coworkers. Yet, only 37% of nurses who have had experiences working with impaired colleagues reported them to supervisors. A cross-sectional correlational research design, employing structural equation modeling, was used to explicate the relationships among the latent attitudinal constructs: permissiveness, morality, treatment efficacy regarding substance abuse, and punitive attitudes toward impaired nurses. The influences of these attitudes on perceived severity of impairment in fictitious coworkers and subsequent intentions to report these coworkers to nursing supervisors were modeled in a sample of 126 nurses. Permissiveness and positive attitude toward treatment were significantly related to intentions to report nurses. Moralistic attitude was not related to intention. Moralistic attitude was, however, strongly associated with a punitive attitude toward impaired nurses.

Adult↗

PubMed2000

Social relations, physical activity, and well-being in older adults.

BACKGROUND: A randomized controlled trial was conducted to examine: (a) the effect of two physical activity modes on changes in subjective well-being (SWB) over the course of a 12-month period in older, formerly sedentary adults (N = 174, M age = 65.5 years) and (b) the role played by physical activity participation and social support in changes in SWB over time. METHOD: Participants were randomized into either an aerobic activity group or a stretching and toning group. Structural equation modeling was employed to conduct multiple sample latent growth curve analyses of individual growth in measures of SWB (happiness, satisfaction with life, and loneliness) over time. RESULTS: A curvilinear growth pattern was revealed with well-being significantly improving over the course of the intervention followed by significant declines at the 6-month follow-up. Subsequent structural analyses were conducted showing that frequency of exercise participation was a significant predictor of improvement in satisfaction with life, whereas social relations were related to increases in satisfaction with life and reductions in loneliness. Improvements in social relations and exercise frequency also helped to buffer the declines in satisfaction with life at follow-up. CONCLUSIONS: It appears that social relations integral to the exercise environment are significant determinants of subjective well-being in older adults. Findings are discussed in terms of how physical activity environments might be structured to maximize improvements in more global well-being constructs such as satisfaction with life.

Aged↗

PubMed2005

Problem-solving and distress in prostate cancer patients and their spousal caregivers.

GOALS OF WORK: Prostate cancer, the most common life-threatening cancer among American men, increases risk of psychosocial distress and negatively impacts quality of life for both patients and their spouses. To date, most studies have examined the relationship between patient coping and distress; however, it is also likely that what the spouse does to cope, and ultimately how the spouse adjusts, will affect the patient's adjustment and quality of life. The present study examined the relationships of spouse problem-solving coping, distress levels and patient distress in the context of prostate cancer. The following mediational model was tested: Spouses' problem-solving coping will be significantly inversely related to patients' levels of distress, but this relationship will be mediated by spouses' distress levels. PATIENTS AND METHODS: One hundred seventy-one patients with prostate cancer and their spousal caregivers were assessed for mood; spouses were assessed for problem-solving coping skills. Structural equation modeling was used to test model fit. MAIN RESULTS: The model tested was a good fit to the data. Dysfunctional spousal problem-solving was a significant predictor of spouse distress level but constructive problem-solving was not. Spouse distress was significantly related to patient distress. Spouse dysfunctional problem-solving predicted patient distress, but this relationship was mediated by spouse distress. The same mediational relationship did not hold true for constructive problem-solving. CONCLUSIONS: Spouse distress mediates the relationship between spouse dysfunctional coping and patient distress. Problem-solving interventions and supportive care for spouses of men with prostate cancer may impact not only spouses but the patients as well.

Adaptation, Psychological↗

PubMed2006

Chocolate craving among children: implications for disordered eating patterns.

The aim was to test the validity of a multidimensional model of chocolate craving among children, and to examine if the dimensions underlying the model predict consumption and eating disordered symptoms. Participants were 602 children (53% female) aged 11, 12, and 13 from 11 schools in Western Australia. Measures included the Orientation to Chocolate Questionnaire (OCQ) designed to assess three components of chocolate craving (approach, avoidance, and guilt), questions assessing body image dissatisfaction and dieting, and body mass index (BMI). Using structural equation modeling, results confirmed that chocolate craving among children is best conceptualized as a three-factor model (approach, avoidance, guilt). The underlying dimensions were differentially associated with self-reported chocolate consumption and indicators of disordered eating patterns. After controlling for BMI and gender, chocolate-related guilt was strongly associated with greater body dissatisfaction and dieting, and avoidance inclinations were also associated with dieting. Chocolate-related guilt was higher in girls than in boys. Results suggest that children experience chocolate craving as a multidimensional phenomenon reflecting some ambivalence. A gender difference in chocolate-related guilt appears to emerge in childhood, potentially contributing to a greater risk for girls to develop exaggerated concerns about body shape and weight.

Adolescent↗

PubMed2006

Gender differences in the prediction of condom use among incarcerated juvenile offenders: testing the Information-Motivation-Behavior Skills (IMB) model.

PURPOSE: To validate the predictive value of the Information-Motivation-Behavioral Skills (IMB) model of human immunodeficiency virus (HIV) prevention for sexually active juvenile offenders and to explore gender differences in IMB model constructs for condom-protected vaginal intercourse. METHODS: Self-report measures of acquired immune deficiency syndrome (AIDS) knowledge, pro-condom peer influence, risk perception, condom attitudes, condom use self-efficacy, frequency of vaginal intercourse, and frequency condom-protected vaginal intercourse were collected from predominantly African-American adolescent detainees. Analysis consisted of structural equation models for the combined sample (N = 523) and for separate gender groups (328 males and 195 females). RESULTS: In the combined model, condom use was significantly predicted by male gender, peer influence, positive condom attitudes, and condom self-efficacy. In separate gender analyses, condom use among adolescent males was predicted by peer influence (modestly) and by positive condom attitudes, whereas condom use among females was predicted by peer influence, self-efficacy, and condom attitudes. Compared with males, females reported significantly greater knowledge, less peer influence, higher perceived risk for infection, more positive condom attitudes, and more self-efficacy, but they reported less condom use. CONCLUSIONS: Females may find it difficult to use condoms consistently despite their awareness of their efficacy. Power imbalances or other dynamics operating in their relationships with males need further exploration. Gender differences in the relationship between condom self-efficacy and condom use were masked in the analysis of the total sample, indicating the value of testing theories of HIV prevention separately by gender.

Adolescent↗

PubMed2006

Genetic influences on dynamic complexity of brain oscillations.

Human electroencephalogram (EEG) consists of complex aperiodic oscillations that are assumed to indicate underlying neural dynamics such as the number and degree of independence of oscillating neuronal networks. EEG complexity can be estimated using measures derived from nonlinear dynamic systems theory. Variations in such measures have been shown to be associated with normal individual differences in cognition and some neuropsychiatric disorders. Despite the increasing use of EEG complexity measures for the study of normal and abnormal brain functioning, little is known about genetic and environmental influences on these measures. Using the pointwise dimension (PD2) algorithm, this study assessed heritability of EEG complexity at rest in a sample of 214 young female twins consisting of 51 monozygotic (MZ) and 56 dizygotic (DZ) pairs. In MZ twins, intrapair correlations were high and statistically significant; in DZ twins, correlations were substantially smaller. Genetic analyses using linear structural equation modeling revealed high and significant heritability of EEG complexity: 62-68% in the eyes-closed condition, and 46-60% in the eyes-open condition. Results suggest that individual differences in the complexity of resting electrocortical dynamics are largely determined by genetic factors. Neurophysiological mechanisms mediating genetic variation in EEG complexity may include the degree of structural connectivity and functional differentiation among cortical neuronal assemblies.

Adolescent↗

PubMed2002

Work characteristics, learning-related outcomes, and strain: a test of competing direct effects, mediated, and moderated models.

Direct effect, mediated, and moderated models of the relationship among work characteristics (job control, job demands), learning-related outcomes (skill utilization, self-efficacy), and strain (anxiety, depression) were compared. Three independent samples of call center employees were used, 2 cross-sectional (Ns = 427 and 203) and 1 longitudinal (N = 144). Initial analysis of the cross-sectional samples using structural equation modeling revealed that mediated models provided the best fit to the data. Skill utilization mediated the effect of control on depression, and depression partially mediated the effect of control on skill utilization. Longitudinal hierarchical regression analysis confirmed these findings. Results indicate that, in this occupational context, learning reduces strain, strain inhibits learning, and job control is an important precursor of both these relationships.

Adolescent↗

PubMedDate not supplied

Testing a model: a developmental perspective of adolescent male sexuality.

PURPOSE: This study tested a model of adolescent male sexuality and evaluated its usefulness for predicting sexual behaviors among a diverse sample. DESIGN AND METHODS: Secondary analysis using a national sample was conducted. Sexuality was conceptualized as depending on family, peers, and school. Neighborhood was hypothesized to influence sexuality indirectly. Sexuality was hypothesized to influence sexual behaviors and age at first sex. Structural equation modeling techniques were used with ethnic comparisons. RESULTS: Family was the strongest predictor of sexuality. Males who were closer to their family were sexually conservative; males closer to peers were sexually permissive. Neighborhood's influence was moderated through family and school. Ethnic differences were not found. PRACTICE IMPLICATIONS: Sexuality assessments and strengthening family relationships are essential.

Adolescent↗

PubMed2006

Confirmatory factor analysis of the child-feeding questionnaire among parents of adolescents.

We investigated the validity of the child-feeding questionnaire (CFQ) among parents of adolescents. The original CFQ was developed to assess perceptions of obesity-proneness and child-feeding practices among parents of 2- to 11-year-old children. We modified the CFQ to make it applicable to parents of adolescents and added one item on monitoring sugared beverages. Confirmatory factor analysis was conducted using the latent variable approach. Factor scores were related to adolescent body mass index percentiles (BMI%) using structural equation modeling. The modified CFQ was completed by 260 parent/guardians (mean age 39.8 years; 92% female; 55% Black, 35% White, 10% Other). The original published measurement model was fit to our sample and yielded an acceptable fit (CFI = 0.95, TLI = 0.93, RMSEA = 0.05). Adding the extra variables decreased the fit; however, minor modifications improved the fit without changing the factor structure (CFI = 0.95, TLI = 0.94, RMSEA = 0.05). Cronbach's alphas for the subscales ranged from 0.60 to 0.88. The factors, parental perceptions of child weight, concern for child weight, monitoring and restriction were positively associated, and pressure to eat was inversely associated with adolescent BMI%. In conclusion, the psychometric properties of the modified CFQ tested among parents of a multi-ethnic adolescent sample were similar to those of the original CFQ.

Adolescent↗

PubMedDate not supplied

Differential age effects in semantic and episodic memory, Part II: Slope and intercept analyses.

This study tested for dissociations between age-related slowing in peripheral and central processes across semantic and episodic memory tasks. We report the mixed-model analysis of variance (ANOVA) results using reaction time (RT), error, and data from four different experimental tasks and eight data sets (the four tasks involved either multiple sessions or different stimuli) conducted on the same 80 participants (40 younger and 40 older adults). An earlier paper (Allen, Sliwinski, Bowie, & Madden, in press) reported the factor analysis and structural equation modeling results of this study. We employed two semantic memory tasks (lexical decision and multiplication verification) using data from two different sessions (for a total of four semantic data sets), and two episodic memory tasks (hybrid visual search and memory search with digits and with words as stimuli). For RT analyses, we found Age x Task interactions for all four episodic memory data sets, but no Age x Task interactions for the four semantic memory data sets. Also, the intercept (assumed to index peripheral processes) and slope (assumed to index central processes) analyses demonstrated that older adults (relative to younger adults) showed both intercept and slope decrements for episodic memory tasks, but only intercept decrements for semantic memory tasks. These data are consistent with a theoretical framework in which there are age-related dissociations between peripheral and central processes across semantic and episodic memory.

Adolescent↗

PubMed2005

Modeling social reintegration in persons with spinal cord injury.

PURPOSE: This study was undertaken to identify and develop a model of the factors related to social reintegration in persons with spinal cord injury (SCI). METHOD: A convenience sample of 145 persons with SCI living in two cities in South Korea anonymously completed a questionnaire that comprised the assessment of social reintegration, a tool developed to measure the degree of adjustment to community living in persons with SCI. Structural equation modeling was used to examine the direct and indirect effects of self-esteem, social barriers, physical function, family support, informational support, perceived stress, emotion-focused coping (EFC), and problem-focused coping (PFC) on social reintegration. RESULTS: The model explained 65% of the variance in social reintegration in persons with SCI. The results indicated that the social integration of persons with SCI was influenced most by EFC. Family support, informational support, perceived stress and social barriers were also significantly related to social reintegration. CONCLUSIONS: These findings suggest implications for developing the interventions at various levels including family and community and specific to individual coping strategies to enhance social reintegration in persons with SCI.

Adaptation, Psychological↗

PubMedDate not supplied

Workplace access, negative proscriptions, job strain, and substance use in registered nurses.

BACKGROUND: Both occupational conditions and individual factors have been shown as contributors to the likelihood of substance use among health professionals. OBJECTIVES: To assess the use of Winick's (1974) model for explaining nurses' substance use, which asserts that groups with access to substances, freedom from negative proscriptions, and role strain have an increased likelihood of drug dependence. METHODS: Data were analyzed from the 3,600 working nurses participating in the Nurses Worklife and Health Study, a nationally representative survey of registered nurses in the United States. A structural equation model was tested fitting workplace access to substances (availability, frequency of administration, and knowledge), freedom from negative proscriptions (internal: religiosity; external: social network), and role strain (job demands and depressive symptoms) to the frequency of past year alcohol, marijuana/cocaine, and prescription-type drug use. RESULTS: Nurses were more likely to use substances when workplace access to substances increased (p < 0.001), with social networks containing more drug users, and when religiosity decreased (p < 0.001). Role strain (measured through job demands and depressive symptoms) also was related to substance use. Depressive symptoms were related directly and negatively to substance use (p < 0.01), whereas job demands were related indirectly to substance use through depressive symptoms. CONCLUSIONS: Winick's model has use in explaining nurses' substance use. Research and preventive initiatives should consider the multidimensional aspects of substance use in nurses.

Adult↗

PubMed2002

Predictors of intention to promote family planning: a survey of Protestant seminarians in the United States.

The purpose of this study was to examine Protestant seminary students' intention to promote family planning. Intention to promote family planning and its predictors were examined by testing a conceptual model based on the theory of planned behavior and social cognitive theory. A nonrepresentative sample of 635 seminarians (90.5% Anglo; 66.5% male) from 10 theological schools in the United States completed a mailed survey. Students were classified according to their religious beliefs as conservative (61.9%) and nonconservative (38.1%), and group differences in intention (and its correlates) were examined. Structural equation modeling was used to assess relationships among attitudes toward sexuality, attitudes toward family planning, subjective norms, knowledge, self-efficacy, and intention for both conservative and nonconservative students. Results indicated that the relationships among predictors of intention were essentially similar for both conservative and nonconservative seminarians, with attitudes and self-efficacy for promoting family planning exhibiting the strongest direct effects on intention.

Analysis of Variance↗

PubMed2005

A model of subjective quality of life for outpatients with schizophrenia and other psychoses.

This study investigated predictors of quality of life among persons with schizophrenia and other psychoses. On the basis of previous research, it was hypothesised that objective life circumstances, self-variables, psychopathology, activity level, satisfaction with daily activities, and satisfaction with medical care would be determinants of quality of life. 134 persons were investigated, and the analysis was based on Structural Equation Modelling (SEM). A model with two quality of life variables, General quality of life and Security, fitted the data best. A self-variable, Sense of self, and Satisfaction with daily activities, Psychopathology, and Satisfaction with medical care served as mediators and explained the variation in the quality of life variables. External to the mediators, and related to these, were Activity level, Educational level, and Independent living. In conclusion, a self-variable showed the strongest association with quality of life, but two aspects that should be feasible to influence in mental health care, daily activity and medical care, contributed to the subjects' self-rated quality of life. These results render a somewhat optimistic view on how to accomplish a better self-perceived quality of life among people with severe mental illness.

Activities of Daily Living↗

PubMed2004

Interpersonal and role-related schema influence the relationship with the dominant 'voice' in schizophrenia: a comparison of three models.

BACKGROUND: Auditory hallucinations in psychosis often contain critical evaluations of the voice-hearer (for example, attacks on self-worth). A voice-hearer's experience with their dominant voice is a mirror of their social relationships in general, with experiences of feeling low in rank to both voices and others being associated with depression. However, the direction of the relationship between psychosis, depression and feeling subordinate is unclear. METHOD: Covariance structural equation modelling was used with data from 125 participants diagnosed with schizophrenia to compare three 'causal' models: (1) that depression leads to the appraisal of low social rank, voice power and distress; (2) that psychotic illness leads to voice activity (frequency, audibility), which in turn leads to depression and the appraisal of voices' power; (3) our hypothesized model, that perceptions of social rank and social power lead to the appraisal of voice power, distress and depression. RESULTS: Findings supported model 3, suggesting that the appraisal of social power and rank are primary organizing schema underlying the appraisal of voice power, and the distress of voices. CONCLUSIONS: Voices can be seen to operate like external social relationships. Voice content and experience can mirror a person's social sense of being powerless and controlled by others. These findings suggest important new targets for intervention with cognitive and social therapy.

Adult↗

PubMed2001

Risk taking and refusal assertiveness in a longitudinal model of alcohol use among inner-city adolescents.

Risk taking and refusal assertiveness have been shown to be important determinants of adolescent alcohol use. However, it remains unclear whether youth predisposed to risk taking would be less likely to assertively refuse. This study examined the relationships among risk taking, refusal assertiveness, and alcohol use in a sample of inner-city minority students (N = 1,459), using a cross-lagged longitudinal structural equation model. Data collectors administered the questionnaire to students following a standardized protocol during a 40-min class period. Based on the tested model, risk taking was more stable over time than refusal assertiveness. Furthermore, high risk takers reported less frequent subsequent refusal assertiveness, and less frequent refusal assertiveness predicted greater drinking. A predisposition toward risk taking appears to be an enduring characteristic that is associated with low refusal assertiveness and increased alcohol use. These findings suggest that alcohol prevention programs that emphasize refusal skills training may be less effective for high risk takers. But programs that focus on enhancing competence or reducing normative expectations for peer alcohol use might be more effective for high risk-taking youth.

Adolescent↗

PubMed2001

A model for achievement motives, goal orientations, intrinsic interest, and academic achievement.

This study investigated the effects of approach and avoidance achievement motives (the motive to achieve success and the motive to avoid failure) on three goal orientations (mastery, performance-approach, performance-avoidance goals) and the effects of goal orientations on intrinsic interest in learning and academic achievement for 157 tenth and 135 eleventh grade students of a Japanese girls' high school. Structural equation modeling indicated that mastery goals arose mainly from the motive to achieve success; however, the positive relation between the motive to avoid failure and mastery goals was also found. Performance-approach goals were related both the motive to achieve success and the motive to avoid failure. Performance-avoidance goals arouse mainly from the motive to avoid failure; however, the positive relation between the motive to achieve success and these goals was found. Mastery goals positively correlated with intrinsic interest and academic achievement, and scores on both performance-approach goals and performance-avoidance goals had no significant effects on either intrinsic or academic achievement.

Achievement↗