Assessing the test-retest reliability of the social value orientation slider measure

Abstract

Abstract Decades of research show that (i) social value orientation (SVO) is related to important behavioral outcomes such as cooperation and charitable giving, and (ii) individuals differ in terms of SVO. A prominent scale to measure SVO is the social value orientation slider measure (SVOSM). The central premise is that SVOSM captures a stable trait. But it is unknown how reliable the SVOSM is over repeated measurements more than one week apart. To fill this knowledge gap, we followed a sample of N = 495 over 6 months with monthly SVO measurements. We find that continuous SVO scores are similarly distributed (Anderson-Darling k-sample p = 0.57) and highly correlated (r ≥ 0.66) across waves. The intra-class correlation coefficient of 0.78 attests to a high test-retest reliability. Using multilevel modeling and multiple visualizations, we furthermore find that one’s prior SVO score is highly indicative of SVO in future waves, suggesting that the slider measure consistently captures one’s SVO. Our analyses validate the slider measure as a reliable SVO scale.

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