Benjamin R. Karney

The longitudinal course of marital quality and stability: A review of theory, methods, and research.

Although much has been learned from cross-sectional research on marriage, an understanding of how marriages develop, succeed, and fail is best achieved with longitudinal data. In view of growing interest in longitudinal research on marriage, the authors reviewed and evaluated the literature on how the quality and stability of marriages change over time. First, prevailing theoretical perspectives are examined for their ability to explain change in marital quality and stability. Second, the methods and findings of 115 longitudinal studies--representing over 45,000 marriages--are summarized and evaluated, yielding specific suggestions for improving this research, Finally, a model is outlined that integrates the strengths of previous theories of marriage, accounts for established findings, and indicates new directions for research on how marriages change.

Neuroticism, marital interaction, and the trajectory of marital satisfaction.

Theories of how initially satisfied marriages deteriorate or remain stable over time have been limited by a failure to distinguish between key facets of change. The present study defines the trajectory of marital satisfaction in terms of 2 separate parameters--(a) the initial level of satisfaction and (b) the rate of change in satisfaction over time--and seeks to estimate unique effects on each of these parameters with variables derived from intrapersonal and interpersonal models of marriage. Sixty newlywed couples completed measures of neuroticism, were observed during a marital interaction and provided reports of marital satisfaction every 6 months for 4 years. Neuroticism was associated with initial levels of marital satisfaction but had no additional effects on rates of change. Behavior during marital interaction predicted rates of change in marital satisfaction but was not associated with initial levels.

Disparate prevalence estimates of PTSD among service members who served in Iraq and Afghanistan: Possible explanations

The authors reviewed 29 studies that provide prevalence estimates of posttraumatic stress disorder (PTSD) among service members previously deployed to Operations Enduring and Iraqi Freedom and their non-U.S. military counterparts. Studies vary widely, particularly in their representativeness and the way PTSD is defined. Among previously deployed personnel not seeking treatment, most prevalence estimates range from 5 to 20%. Prevalence estimates are generally higher among those seeking treatment: As many as 50% of veterans seeking treatment screen positive for PTSD, though much fewer receive a PTSD diagnosis. Combat exposure is the only correlate consistently associated with PTSD. When evaluating PTSD prevalence estimates among this population, researchers and policymakers should carefully consider the method used to define PTSD and the population the study sample represents.

Depressive symptoms and marital satisfaction: within-subject associations and the moderating effects of gender and neuroticism.

Given the emphasis on within-subject associations between depression and marital quality in recent theory and practice, this study was undertaken with three goals: to examine within-subject associations between depressive symptoms and marital quality over time, to address gender differences in the magnitude and direction of these associations, and to determine whether neuroticism moderates the strength of these associations. A total of 164 newly wed couples provided 8 waves of data over 4 years of marriage. Hierarchical linear modeling confirmed the existence of bidirectional within-subject associations between marital satisfaction and depressive symptoms. Gender differences were rarely significant. Although neuroticism strengthened the effect of marital distress on symptoms as predicted, it weakened the effect of symptoms on marital distress among husbands. The theoretical and practical implications of these findings are discussed.

Attachment change processes in the early years of marriage.

The authors examined 4 models of attachment change: a contextual model, a social-cognitive model, an individual-difference model, and a diathesis-stress model. Models were examined in a sample of newlyweds over the first 2 years of marriage, using growth curve analyses. Reciprocal processes, whereby attachment representations and interpersonal life circumstances affect one another over time, also were studied. On average, newlyweds became more secure over time. However, there was significant within-subject variability on attachment change that was predicted by intra- and interpersonal factors. Attachment representations changed in response to contextual, social-cognitive, and individual-difference factors. Reciprocal processes between attachment representations and marital variables emerged, suggesting that these factors influence one another in an ongoing way.

How Does Context Affect Intimate Relationships? Linking External Stress and Cognitive Processes within Marriage

Stressors external to the marriage frequently affect the way spouses evaluate their marital quality. To date, however,understanding of the interplay between external stress and internalrelationship processes has been limited in two ways. First,research has generally examined only the short-termconsequences of stress. Second, the mechanisms through whichexternal stressors influence relationship outcomes are unclear. Thisstudy addressed both limitations by examining relationshipcognitions that may mediate the effects of external stressthroughout 4 years of marriage. Analyses confirmed that stressfulexperiences were associated with the trajectory of marital quality overtime. Furthermore, both the content and the organization ofspouses’ specific relationship cognitions mediated this effect.That is, stress negatively influenced the nature of spouses’marital perceptions as well as the way spouses interpreted andprocessed those perceptions. These findings draw attention to waysthat the context of relationships shapes and constrainsrelationship processes.

Contextual Influences on Marriage Implications for Policy and Intervention

Current proposals to promote and strengthen marriage among low-income populations focus on values and behavioral skills as primary targets of intervention. Marital research that examines contextual influences on marriage calls these emphases into question. Ethnographic and survey research reveal no evidence that populations experiencing higher rates of divorce value healthy marriages any less than other populations do. Longitudinal and observational research reveals two mechanisms through which the environment of a marriage may enhance or constrain effective relationship maintenance. First, some environments contain fewer sources of support and pose more severe challenges than others, presenting marriages in those environments with greater burdens than marriages in more supportive environments are faced with. Second, when demands external to the marriage are relatively high, even couples with adequate coping skills may have difficulty exercising those skills effectively. Together, such findings suggest that successful policies and interventions to strengthen marriages need to acknowledge the environments within which marriages take place.

Benevolent cognitions as a strategy of relationship maintenance: "Don't sweat the small stuff"....But it is not all small stuff.

To maintain intimate relationships in the face of negative experiences, many recommend cognitive strategies that minimize the implications of those experiences for global evaluations of the relationship. But are such strategies always adaptive? Suggesting otherwise, 2 longitudinal studies spanning the 1st 4 years of 251 new marriages revealed that the effects of benevolent cognitions on relationship development depended on the initial levels of negativity in the relationship. Cross-sectionally, the tendency to make positive attributions or otherwise disengage global evaluations of the relationship from negative experiences was associated with higher levels of satisfaction in marriages characterized by more frequent negative behavior and more severe problems. Longitudinally, in contrast, such strategies only demonstrated benefits to healthier marriages, whereas they predicted steeper declines in satisfaction among spouses in more troubled marriages by allowing marital problems to worsen over time. These findings highlight the limits of purely cognitive theories of relationship maintenance and suggest that widely recommended strategies for improving relationships may harm vulnerable couples by weakening their motivations to address their problems directly.

Memory Bias in Long-Term Close Relationships: Consistency or Improvement?

How do partners in long-term relationships construct memories of the past? The current study examined 20 years of retrospective and longitudinal data from a sample of wives to evaluate two possible answers to this question. Findings indicate that wives invoke different theories of the past at different stages of life. At 10 years into the study, wives’ memories of the past were negatively biased, such that present ratings seemed a significant improvement. At 20 years into the study, wives’ memories of the past continued to be negatively biased; however, at this stage, recollections of the past resembled current perceptions. Across both intervals, concurrent ratings in fact declined significantly. Longitudinal analyses revealed that the degree of bias in wives’ memories at Time 2 predicted the course of their marital satisfaction over the subsequent 10 years. These results support the view that memory bias may be a mechanism of maintaining satisfaction in long-term relationships.

A Framework for Incorporating Dyads in Models of HIV-Prevention

Although HIV is contracted by individuals, it is typically transmitted in dyads. Most efforts to promote safer sex practices, however, focus exclusively on individuals. The goal of this paper is to provide a theoretical framework that specifies how models of dyadic processes and relationships can inform models of HIV-prevention. At the center of the framework is the proposition that safer sex between two people requires a dyadic capacity for successful coordination. According to this framework, relational, individual, and structural variables that affect the enactment of safer sex do so through their direct and indirect effects on that dyadic capacity. This dyadic perspective does not require an ongoing relationship between two individuals; rather, it offers a way of distinguishing between dyads along a continuum from anonymous strangers (with minimal coordination of behavior) to long-term partners (with much greater coordination). Acknowledging the dyadic context of HIV-prevention offers new targets for interventions and suggests new approaches to tailoring interventions to specific populations.