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Biomedical subjects

C Hammen

Publications and source records attributed to C Hammen.

At least 55 records · Page 3Linked to original sources
PubMed1991

Factor influencing suicide intent in gay and bisexual suicide ideators: differing models for men with and without human immunodeficiency virus.

Of 778 gay and bisexual men (none with acquired immunodeficiency syndrome [AIDS]), 27% (n = 212) reported suicidal ideation over the previous 6 months. Covariance structure models were used to explore predictors of suicide intent among (n = 112) suicide ideators with (n = 100) and without (n = 112) human immunodeficiency virus (HIV). Current AIDS-related stressors (deaths and illnesses and perceived AIDS risk) and past levels of adaptive functioning (social isolation and depression) were significantly more powerful predictors of suicide intent among HIV-positive than among HIV-negative ideators. Biological AIDS risk predicted neither suicide intent, current distress, nor perceived AIDS risk. Pathways to suicide intent appear to be psychologically, rather than biologically, mediated. Among HIV-positive ideators, AIDS-related death and illness events predicted suicide intent but not current distress symptoms. Some suicidal ideation in response to AIDS-related events may be an effort to cope rather than a manifestation of psychological distress.

Adaptation, Psychological↗
PubMed1991

AIDS-related factors predictive of suicidal ideation of low and high intent among gay and bisexual men.

AIDS-related stressors were studied in relationship to suicidal ideation and suicide intent among 778 gay and bisexual men (none with AIDS). Over the previous six months, 27% (n = 212) reported suicidal ideation. Subjects who reported suicidal ideation (compared to those who did not) were more likely to report recent (last 6 months) bereavement of partner, recent ARC diagnosis, and multiple close friends with ARC. Suicide ideators were divided by a median split on a self-report scale of suicide intent into low (n = 105) and high (n = 107) intent suicide ideators. News of HIV seropositivity was specifically related to low intent suicidal ideation. High intent suicidal ideation was associated with having a partner with AIDS or ARC, or multiple close friends with AIDS, or having ARC. Generally speaking, while temporally discrete AIDS-related events were associated the report of suicidal ideation, ongoing stressors which may more greatly challenge adaptational capacities were more associated with high intent suicidal ideation.

AIDS Serodiagnosis↗
PubMed1990

Longitudinal study of diagnoses in children of women with unipolar and bipolar affective disorder.

School-age children of unipolar depressed, bipolar, chronically medically ill, or normal women were diagnosed every 6 months for up to 3 years. Offspring of unipolar women had the highest rates of disorder at all evaluations, but children of bipolar and medically ill mothers also experienced significant rates of disorder. Observing diagnoses from both past lifetime and prospective follow-up assessments, it appeared that most children who had diagnoses had onsets in preadolescence and continued a chronic or intermittent course of disorder. Thus, risk to offspring of ill mothers is not transitory and indicates a pernicious course that commonly includes effective disorders alone or in combination with behavior and anxiety disorders.

Adolescent↗
PubMed1990

Life events and the course of bipolar disorder.

The authors examined the impact of life stress on the course of bipolar disorder over a 2-year period in a group of 61 outpatients. The patients were followed prospectively with ongoing assessments of stressful life events, symptoms, levels of maintenance medication, and compliance with treatment regimens. As predicted, survival analyses indicated a significant association between life events and relapse or recurrence of the disorder. These effects could not be explained by differences in levels of medication or compliance. Further research is recommended to examine which specific subgroups of bipolar patients are most susceptible to stress.

Adult↗
PubMed1989

Sociotropy/autonomy and vulnerability to specific life events in patients with unipolar depression and bipolar disorders.

Followed samples of unipolar and bipolar patients for a 6-month period, with independent assessment of symptoms and life events. Patients were initially categorized into subtypes using Beck's Sociotropy/Autonomy Scale, with the prediction that onset or exacerbation of symptoms, as well as more total symptoms, would occur for sociotropic individuals experiencing more negative interpersonal events than achievement events, and for autonomous-achievement patients experiencing more achievement events than interpersonal events. Results were confirmed for unipolars, indicating that the course of disorder was associated with the occurrence of personally meaningful life events, but not for bipolars. Further research is recommended to examine whether the effect is equally robust for both subtypes of unipolars, whether longer study duration may be required for bipolars, and whether a cognitive self-schema mechanism may account for the specific vulnerability to a subset of stressful events.

Achievement↗
PubMed1989

Role of maternal depression in perceptions of child maladjustment.

We investigated (a) the relation of maternal depression to perceptions of externalizing and internalizing disorders in children and (b) quality of communication in a mother-child interaction task as a function of maternal depression and perceptions of the child. 64 children of unipolar or bipolar mothers, chronic medically ill or normal mothers were studied; clinical diagnoses, children's reports, and teachers' ratings served as objective criteria of children's maladjustment. Maternal depression defined by current symptomatology on the Beck Depression Inventory and by psychiatric status was not associated with misperceptions of psychopathology. Maternal depression interacted with children's actual behaviors to predict mothers' perceptions: nondepressed mothers were less accurate reporters of problems in children than were depressed mothers. Depressed mothers who perceived maladjustment in their disturbed children made more negative comments in interactions that did nondepressed mothers of disturbed children. The apparent mutual impact of mothers' and children's maladjustment requires fuller exploration in offspring studies.

Adolescent↗
PubMed1989

Observations of interactions of depressed women with their children.

Dysfunctional interactions between mothers with major affective disorders and their children may contribute to the children's high risk of disorder. This study investigated the behavior of mothers with recurrent unipolar depression, bipolar disorder, or chronic medical illness and of normal subjects toward their children during a directly observed conflict discussion task. In addition, lifetime history of depression, current mood, and chronic stress were investigated as predictors of maternal interaction. Unipolar depressed women displayed relatively more negative, less positive, and less task-focused behaviour toward their children. Current mood and chronic stress, more than psychiatric history, contributed to the prediction of interaction style.

Adolescent↗
PubMed1988

Self-cognitions, stressful events, and the prediction of depression in children of depressed mothers.

In a preliminary effort to integrate cognitive, life stress, and interpersonal approaches to vulnerability to depression, children's cognitions about themselves, their stressful life events, and the interaction of self-cognitions and life events were tested as predictors of depression. Children of normal, medically ill, and bipolar and unipolar depressed mothers were assessed initially and 6 months later for diagnostic status using the Kiddie-SADS interview. As predicted, Piers-Harris self-concept scores and interview-assessed children's stressful life events significantly predicted changes in depression status over the 6-month follow-up. Stressors and the interaction of stressors and self-concept also predicted changes in diagnosis of nonaffective disorders. A self-schema measure of accessibility of negative self-cognitions, known to be mood-dependent, failed to add to the prediction of depression severity. The results are consistent with a model of depression vulnerability that emphasizes cognition about self-worth and self-efficacy as mediators of the impact of stressful events, and we speculate that such self-schemas are acquired in part in the context of parent-child relationships. Recommendations are given for further studies of the acquisition and the mechanisms of self-schemas.

Adolescent↗
PubMed1988

A longitudinal test of the attributional vulnerability model in children at risk for depression.

The attributional vulnerability model of depression has rarely been tested in prospective designs, or as an interaction of stressful events and cognitions, or with depression as a specific response outcome. Moreover, the model has rarely been applied to children. All these issues were addressed in this study of prediction of diagnoses during a six-month follow-up for a sample of children that included offspring of women with affective disorders presumed to be at high risk for depression. Hierarchical multiple regression analyses failed to support the attributional hypotheses: depression was best predicted by initial symptoms and by life stress but not by attributions for negative outcomes or the interaction of attributions and life-events. Non-affective diagnoses, on the other hand, were predicted by an interaction of life-events and attributions. The results suggest limitations in the range of application of the attributional model in clinical samples, at least with children and adolescents at risk.

Adolescent↗
PubMed1987

Cognitive vulnerability in children at risk for depression.

Cognitive, developmental, and psychodynamic theories all hypothesize that negative self-concepts acquired in childhood may induce vulnerability to depression. Children at risk because of maternal major affective disorder, compared with children of medically ill and normal mothers, were examined for evidence of negative cognitions about themselves, and were found to have more negative self-concept, less positive self-schemas, and more negative attributional style. It was further predicted that negative cognitions about the self would be related to maternal depression and chronic stress, and to the quality of perceived and actual interactions with the mother. In general, the predicted associations were obtained, supporting speculations about how maternal affective disorder is associated with stress and with relatively negative and unsupportive relationships with children that in turn diminish children's self-regard.

Adolescent↗
PubMed1987

The effects of current mood and prior depressive history on self-schematic processing in children.

Previous research has indicated that children display facilitated recall of personal adjectives judged to be self-descriptive; and most critically, positive and negative adjectives are differentially recalled by relatively depressed and nondepressed children. Such evidence of apparent self-schemas was explored in additional samples of children with current or past histories of diagnosable depression. As predicted, clinically depressed children showed even stronger recall of negative self-descriptive adjectives than in previous research. However, extent of previous experience with depression did not predict degree of negativity of current self-schema beyond that predicted by current mood. The results are discussed in terms of recent findings with depressed adults and are seen as compatible with a developmental model of self-schemas in which prior experience may affect accessibility of negative cognitions once the self-schema has been activated.

Adolescent↗
PubMed1987

Maternal affective disorders, illness, and stress: risk for children's psychopathology.

Stressful circumstances that covary with maternal affective disorder may account for some of the risk to children for psychological dysfunction. Children (ages 8-16) of mothers with unipolar or bipolar disorders were compared with children of mothers who had chronic medical illness and children of normal mothers. Comparisons included Kiddie-SADS (Schedule for Affective Disorders and Schizophrenia) diagnoses and evaluations of behavior problems, school functioning, and social competence. Compared to the other groups, children of mothers with affective disorder (especially unipolar) had high rates of diagnosis. With the effects of chronic stress statistically controlled, psychosocial outcome variables showed fewer differences between groups but indicated particular impairment for children of unipolar mothers.

Adolescent↗
PubMed1985

Self-schemas and risk for depression: a prospective study.

The role of depressive self-schemas in vulnerability to depression was explored in a longitudinal design. Five groups of subjects hypothesized to be at differential risk for depression according to a schema model were identified: depressed schematic, depressed nonschematic, nondepressed schematic, nondepressed nonschematic, and a psychopathology control. They were followed regularly for 4 months with self-report and clinical interview measures of depression. There was no evidence of risk for depression associated with schema status apart from initial mood and no interaction of life stress events and schemas. In a second experiment with the same subjects, it was shown that depressive self-schemas do not exert an ongoing, active influence on everyday information processing; instead current mood affected information processing. Remitted depressed persons resembled nondepressed rather than depressed ones. The results support Kuiper and colleagues' distinction between concomitant and vulnerability schemas, and help to clarify differences between cognitions that are symptoms or correlates of depression and those that may play a causal role under certain conditions.

Adjustment Disorders↗
PubMed1984

Self-schemas, depression, and the processing of personal information in children.

ecent research in information processing has yielded evidence supporting the self-as-schema model with adults. Further self-schema research with depressed and nondepressed persons has suggested the existence of negative self-schemas in depression, lending support to a content-specificity self-schema model. The present studies were designed to investigate the applicability of the self-as-schema model to children and to examine the extent of negative self-schemas in relatively depressed children. A depth-of-processing incidental recall memory paradigm was employed with two groups of normal third- to sixth-grade children. Results supported the self-as-schema model as applied to children, even the youngest group, by indicating superior recall for words encoded under self-reference instructions, compared to semantic or structural orienting instructions. The content-specificity hypotheses were tested with relatively depressed and nondepressed children, and were supported only for the nondepressed children, who recalled mostly positive content words. The relatively depressed children did not demonstrate content specificity in their recall, showing a more "confused" pattern, and the results were discussed in terms of a developmental model of acquisition of depression vulnerability requiring repeated depressive experiences over time. Although the results were consistent with a self-schema approach, current controversies over the implications of depth-of-processing methods require further research to clarify mechanisms of enhanced self-reference recall.

Age Factors↗