Retirement Resources Inventory—Scale Assessment, Relationship to Retirement Satisfaction, Adjustment and a Meta-Analytical Review

The Retirement Resources Inventory (RRI) created by C.S. Leung and L.K. Earl is a frequently used self-reported scale for measuring retirement resources. Since it was introduced, 10 scientific papers have been published using the full set of questions and 3 papers using only some of the questions. These have produced ambiguous and inconsistent results with considerable differences in almost all the parameters measured between countries. This paper aims to conduct a systematic review of the scale’s psychometric characteristics and examine the meta-analytic relationship to retirement adjustment, satisfaction and validation for the Slovak population. Instead of the proposed 6-factor structure, we found that different scholars had identified from 3 to 10 factors, and using a Slovak sample we found 4 factors. Internal reliability measured by Cronbach’s alpha showed high levels in all the studies (0.85–0.93). Meta-analytical relationships with RAI showed a strong random effect, r = 0.6 CI [0.35, 0.85], with the RSI, r = 0.509 CI [0.46, 0.56]. But the mean score for the specific subscales differed significantly from the original study in each of the countries it was tested in. Before the RRI is used to measure retirement resources, it should be validated on large samples and adjusted to national specifications to confirm/reject it as a psychometrically valid measure.