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A two-study validation of a single-item measure of relationship satisfaction: RAS-1
Open AccessAbstract Research addressing relationship satisfaction is a constantly growing area in the social sciences. The aim of the present investigation was to examine the similarities and differences between the seven-item Relationship Assessment Scale (RAS) and the single-item measure of relationship satisfaction (RAS-1), using proximal and distal constructs as correlates. Two studies using two independent samples were conducted, assessing more proximal constructs, such as love and sex mindset in Study 1 ( N = 380; female = 195) and more distant ones, such as loneliness and problematic pornography use in Study 2 ( N = 703; female = 360). Structural equation modeling revealed that love ( β RAS-1 = .55; p < .01; β RAS = .71; p < .01), sex mindset beliefs ( β RAS-1 = .18; p < .01; β RAS = .13; p < .01) and loneliness ( β RAS-1 = −.35; p < .01; β RAS = −.37; p < .01) had significant positive and negative associations with RAS and RAS-1, respectively; while problematic pornography use did not. These results suggest that RAS-1 may be an equally adequate instrument for measuring relationship satisfaction as the RAS with respect to proximal and distal correlates. Thus, RAS-1 is recommended to be used in large-scale studies when the number of items is limited.
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