Cross-cultural adaptation and validation of Pamela Reed's Self-Transcendence Scale for the Spanish context.

OBJECTIVES

the current study aimed to adapt the Self-Transcendence Scale (STS) to the Spanish context and analyse its psychometric properties.

METHOD

the STS was administered to a general Spanish population of adults (i.e., older than 20 years; n = 116) through an online platform. The Psychological Well-Being (PWB) and the Functional Assessment of Chronic Illness Therapy - Spiritual Well-being - modified version for healthy people (FACIT-Sp-Non-Illness) scales were also applied in two moments separated by an interval of 15 days.

RESULTS

the results of the validation included the following statistics: α t = 0.772 (test) and α rt = 0.833 (retest); ICC = 0.278 (p = 0.097, intraclass) and 0.932 (p < 0.001, interclass); a Bland-Altman confirmation of the test/re-test (TRT) concordance; global content validity coefficient (S-CVI) = 0.92; r 1 = 0.636 (PWB) and r 2 = 0.687 (FACIT-Non-Illness; both p < 0.001); and three factors explained 42.3% of the variance. The STS showed positive apparent validity and feasibility.

CONCLUSIONS

the Spanish version of the STS is valid for use in the general population, with updates relative to the Colombian version that include more natural wordings, syntactic corrections, inclusive language, a better definition of the concepts, and an alternative factor model.