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Biomedical subjects

C M Aldwin

Publications and source records attributed to C M Aldwin.

15 recordsLinked to original sources
PubMed1991

Thymic peptides, stress, and depressive symptoms in older men: a comparison of different statistical techniques for small samples.

Thymic peptides play an important role in aging and immune regulation, but little is known about their relationship to psychosocial factors. One thymic fraction, thymosin-alpha 1 (TSN-alpha 1) may be of particular interest given its hypothesized role in the differentiation of immature T cells into functional, mature T cells. We examined the relationships among stress, psychological symptoms, and TSN-alpha 1 levels in two conditions; before and after a glucose challenge test. The sample consisted of 18 men, aged 48-80, participants in the Normative Aging Study. While none of the correlations reached significance in the baseline condition, life events and depressive symptoms were significantly correlated with TSN-alpha 1 in the postchallenge condition (r's = .57, and .62, respectively). Hierarchical regression analyses with cross-product interaction terms suggested that individuals who were high in both life events and depression showed the highest levels of postchallenge TSN-alpha 1, with the psychosocial variables accounting for 65% of the variance. Given the small sample size, we replicated these analyses using jackknife and bootstrap techniques, which generally confirmed these findings. Thus, these preliminary results suggest that psychosocial factors may be related to abnormal TSN-alpha 1 responses to a challenge.

Aged↗
PubMed1991

Personality and aging: a study of the MMPI-2 among older men.

We examined whether separate norms for older men are necessary for the revised Minnesota Multiphasic Personality Inventory (MMPI-2). Scores from 1,459 men in the Normative Aging Study (NAS) (age: M = 61.27, SD = 8.37) were contrasted with those from 1,138 men from the MMPI Restandardization Study (age: M = 41.71, SD = 15.32). Results showed that scores on the MMPI-2 validity, clinical, and content scales for the NAS men were highly similar to those from the MMPI-2 Restandardization sample. There were also few differences between the two groups at the item level. Within-sample analyses revealed some differences between age groups. However, the magnitudes of these differences were small and may represent the single or combined effects of cohort factors and age-related changes in physical health status rather than age-related changes in psychopathology per se. We concluded that special, age-related norms for the MMPI-2 are not needed for older men.

Adolescent↗
PubMed1991

How stressful is retirement? Findings from the Normative Aging Study.

The stressfulness of retirement both as a transitional event experienced during the past year and as a life stage was investigated. Transitional stress was assessed using a life events approach, and stage stress using a "hassles" approach. Respondents were 1,516 male participants in the Normative Aging Study, 45% of whom were retired. Among those retiring in the past year, respondents' own and spouse's retirement were rated the least stressful from a list of 31 possible events. Only 30% found retirement stressful. Retirement hassles were also less frequently reported and were rated less stressful than the work hassles of men still in the labor force. The only consistent predictors of both transitional and stage retirement stress were poor health and family finances; personality did not predict retirement stress.

Adult↗
PubMed1991

Does age affect the stress and coping process? Implications of age differences in perceived control.

The perceived controllability of situations is thought to influence the types of coping strategies used, and thus is important in adaptive processes. Elderly individuals are widely perceived to have less control over their environment than other adults. This lack of perceived control should have adverse affects on how they cope with stressful situations. However, most studies have shown that older adults differ little from younger adults in their approaches to coping with stress. This contradiction was investigated in a sample of 228 community-residing adults with a mean age of 42.16 (SD = 14.88). Path analysis revealed that appraisals and attributions do affect the use of coping strategies such as instrumental action and escapism in the expected directions, and age is negatively associated with perceived control. However, there was an independent and negative relationship between age and the reported use of escapist coping strategies, which mitigated the adverse effects of perceived lack of control. Neither age nor perceived controllability had direct effects on depression, but they had indirect effects through their influence on the use of coping strategies and perceived efficacy.

Adaptation, Psychological↗
PubMed1990

Differences in social support among retirees and workers: findings from the Normative Aging Study.

Cross-sectional differences between retirees and workers in the importance of coworkers as a source of support, as well as in general quantitative support (social networks and frequency of interaction) and qualitative support (confidants and the perceived reliability of support) were examined. The sample consisted of 1,513 older men (mean age = 61), participants in the Normative Aging Study. Half (56%) were working, and the rest were retired. Slightly fewer retirees than workers reported coworker friends, especially among those who were long-term retirees or who did not work at all in retirement. Whereas similar findings were seen with quantitative support, workers and retirees reported nearly identical levels of qualitative support. However, retirees almost never discussed personal problems with former coworkers. The relevance of these findings for the convoy construct is discussed.

Adult↗
PubMed1990

Longitudinal findings from the Normative Aging Study: II. Do emotionality and extraversion predict symptom change?

We investigated the relationship between the personality traits of emotionality and extraversion and symptom-reporting, both cross-sectionally and longitudinally. The sample consisted of 1,034 men, initially screened for good health, who completed both the 16PF and at least two CMIs, (M = 5, range = 2-8) over an average period of 17 years (range = 2-25). Using a two-stage growth model, we obtained a predicted baseline and slope for each man for self-reported physical and psychological symptoms. Correlations revealed that emotionality was positively related to the numbers of both physical and psychological symptoms reported at baseline, while extraversion was negatively related. However, regression analyses including age and both personality variables indicated that only emotionality was associated with level of symptom-reporting. Longitudinal analyses revealed that emotionality was unrelated to physical symptom slopes and only weakly related to psychological slopes. We interpret these results as showing that, while personality and symptom-reporting are related cross-sectionally, personality does not predict changes in symptom reporting.

Adult↗
PubMed1990

The MAC scale in a normal population: the meaning of "false positives".

The MAC scale has been very successful in identifying alcoholics and, in studies of clinical populations, is often considered a test for predisposition to alcoholism. MacAndrew, however, holds that the MAC scale assesses a more general personality trait characterized by sociability, boldness, rebelliousness and pleasure seeking. The present study examines the distribution of MAC scale scores in a normal population and tests for correlates of high MAC scores other than alcohol-related problems (e.g., arrest history). The sample consisted of 1,117 men, participants in the Normative Aging Study (mean age = 61.6). As expected, heavier drinkers and problem drinkers reported significantly higher MAC scale scores than did lighter and nonproblem drinkers. However, arrestees without drinking problems had MAC scale scores nearly identical to those of problem drinkers without arrest histories (23.19 and 23.42, respectively). Further, 36% of the sample without problem drinking or arrest histories had MAC scale scores of 24 or above, the clinical indicator of alcoholism, and more than 32% of these had scores above 27. In the entire sample, of the 152 men who had MAC scores above 27, 71% had no problems, either with arrest or drinking. Results are interpreted as supporting MacAndrew's interpretation of the meaning of the MAC scale as a general personality measure rather than a specific alcoholism instrument.

Adaptation, Psychological↗
PubMed1989

Does emotionality predict stress? Findings from the normative aging study.

Investigated whether emotionality, assessed in 1975, predicted the reporting of both objective stress (life events) and subjective stress (hassles) 10 years later, and how emotionality affected the relation between both objective and subjective stress and mental health. The sample consisted of 1,159 older men, participants in the Normative Aging Study. Path analysis revealed that the reporting of stress was confounded with personality: Individuals higher in emotionality reported both more life events and more hassles. Furthermore, individuals higher in emotionality exhibited slightly higher levels of symptoms under stress than did individuals lower in emotionality. Nonetheless, both stress measures contributed independent variance to the prediction of psychological symptoms, even controlling for prior levels of emotionality. Implications for the assessment of stress are discussed.

Adaptation, Psychological↗
PubMed1989

Longitudinal findings from the normative aging study: 1. Does mental health change with age?

Longitudinal changes in self-reported symptoms were investigated using the Cornell Medical Index (CMI) in a sample of 2,041 men. The average man completed 5 CMIs (range = 2-8) over 17 (range = 2-25) years. Using a two-stage growth model, we first regressed symptoms against time on study for each man. The average slope of physical symptoms showed a moderate increase over time, but the average slope of psychological symptoms showed little change. Next, individual differences in change were examined using age at entry as an explanatory variable. Age accounted for 50% of the variance in physical symptoms at entry and 7% of the variance in slopes, but explained neither baseline level nor change in psychological symptoms. Rather, a U-shaped curve described the relation between age and psychological symptom change. These results, in concert with a developmental perspective, may help reconcile conflicting findings on aging and mental health.

Adult↗
PubMed1987

Does coping help? A reexamination of the relation between coping and mental health.

In a longitudinal community survey of 291 adults, we explored the relation between coping strategies and psychological symptoms. Respondents completed the revised Ways of Coping Scale (Folkman & Lazarus, 1985) for a self-named stressful episode. Factor analysis produced eight coping factors: three problem focused, four emotion focused, and one (support mobilization) that contained elements of both. Multiple regression analyses indicated bidirectionality in the relation between coping and psychological symptoms. Those in poorer mental health and under greater stress used less adaptive coping strategies, such as escapism, but coping efforts still affected mental health independent of prior symptom levels and degree of stress. We compared main versus interactive effects models of stress buffering. Main effects were confined primarily to the emotion-focused coping scales and showed little or negative impacts of coping on mental health; interactive effects, though small, were found with the problem-focused scales. The direction of the relation between problem-focused scales and symptoms may depend in part on perceived efficacy, or how the respondent thought he or she handled the problem. Implications for the measurement of adaptive coping mechanisms and their contextual appropriateness are discussed.

Adaptation, Psychological↗
PubMed1987

Mental health differences among retirees and workers: findings from the Normative Aging Study.

Researchers during the past decade have found little effect of retirement on physical health. However, retirement entails a number of losses, and its effect on mental health, as measured by the prevalence of psychological symptoms, is unclear. We examined psychological symptoms in a sample of 1,513 older men, participants in the Normative Aging Study, using the SCL-90-R (Derogatis, 1983). Analyses of variance indicated that retirees reported more psychological symptoms than did workers, even after controlling for physical health status. Exploratory analyses examining the circumstances of retirement found no effects for length of retirement or part-time employment, but did find effects for the timing of retirement. Both early and late retirees reported more psychological symptoms. Late workers (aged 66 and older) reported the fewest symptoms. Reasons for these findings are discussed.

Adaptation, Psychological↗
PubMed1986

Vulnerability to economic stress.

A stress vulnerability model was applied to the relationship between economic stress and mental health. Longitudinal data were obtained by reinterviewing 291 respondents from a prior community survey of economic change and health (Catalano & Dooley, 1983). The follow-up survey was conducted at the height of the last recession, approximately 1 year after the first. As predicted, increases in self-reported economic stress adversely affected psychological health, controlling for prior mental health status. However, individuals with poor prior mental health status were more vulnerable to economic stress: They were more likely to experience it during this economic contraction and were somewhat less likely to recover from it. Economic stress and mental health appear to have reciprocal effects, suggesting a spiral model of adaptation. Implications for interventions concerning economic change and mental health are discussed.

Adaptation, Psychological↗