Abstract
The aim of this study was to establish the psychometric properties of the new Relationship Satisfaction (RS) scale. Two population based samples were used: The Norwegian Mother and Child Cohort Study (MoBa, N=117,178) and The Quality of Life study (N=347). Convergent and discriminant validity was investigated in relation to the Quality of Marriage Index (QMI), the Satisfaction With Life Scale (SWLS), Relationship Satisfaction of partner, Big Five personality traits (IPIP50) and future relationship dissolution. The full scale with ten items (RS10) and a short version with five items (RS5) showed good psychometric properties. The scale has high internal and test-retest reliability and high structural, convergent, and discriminant validity. Measurement invariance across gender was established. Additionally, predictive validity was evidenced by prediction of future relationship dissolution. We conclude that the RS scale is highly useful as a generic measure of global relationship satisfaction.
Highlights
The aim of this study was to establish the psychometric properties of the new Relationship Satisfaction (RS) scale
We first report the results pertaining to the reduction of the RS10 into the short RS5
This reduction was done subsequent to the initial analyses providing evidence for the reliability and validity of the full RS10 scale
Summary
The aim of this study was to establish the psychometric properties of the new Relationship Satisfaction (RS) scale. Several questionnaire scales have previously been developed in this field, including the Quality Marriage Index [7], the Dyadic Adjustment Scale [8], the Marital Satisfaction Inventory [9], the Kansas Marital Satisfaction Scale [10], the Marital Satisfaction and Commitment Scales [11], the Commitment Inventory [12], the Relationship Assessment Scale [13], the Marital Satisfaction Scale [14], the Couples Satisfaction Index [15] and the Interpersonal Reactivity Index for Couples [16] Such scales represent important contributions to measurement in this field. Several of the scales were constructed for use in therapy settings and are rather lengthy and thereby inadequate for use in large surveys
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