| Summary: | There has been substantial empirical. research and theoretical modelling on the
determinants of marital instability. However, the predominant theoretical models,
largely based on field theory and social exchange, are ambiguous. Due to this
ambiguity, there remains an ongoing debate in the literature as to the utility of these
models. In addition, there are few empirical tests of these models, while existing tests
are limited by poor measures and sample restrictiveness. Furthermore, the models are
largely developed from research with samples restricted to short marital durations,
consequently, limiting the utility of these models on marriages of longer duration. Five
models based on Levinger's (1965, 1976) conceptualisation of marital attractions,
alternatives, and barriers and Lewis and Spanier's (1979) theory of marital quality and
marital stability are developed. Four sets of tests are conducted using the National
Survey of Families and Households data set (waves 1 and 2), a national, stratified,
multi-stage area probability sample consisting of over 13,000 cases in the United
States'. First, a series of logistic regression analyses are run to determine if marital
quality has a significant effect on marital stability, a notion based on little empirical
evidence. Second, five models are compared to determine which of five competing
explanations best fits the data. Third, the best fitting model is retested with the addition
of control variables. Fourth, the resulting model is retested on younger and older
marriage cohorts. Marital quality is found to have a significant effect on marital
stability. Results of the model comparisons provide support for an additive curvilinear
model where marital quality, alternatives, and barriers all have independent effects on marital stability. This provides support for Lewis and Spanier's (1979) marital typology
With the addition of controls, the model remains significant. However, the additional
significance of duration and commitment suggest that cohort and duration effects may
be occurring. The model is effective in predicting marital stability for the younger
marriage cohort but did not apply to the older marriage cohort. These results suggest a
theoretical implication. Time oriented theories need to be examined as possible
explanations for marital stability, especially for older marriage cohorts. === Land and Food Systems, Faculty of === Graduate
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