Home > Journals > IJARE > Vol. 14 > No. 4 (February 2025)

Construct Validity, Test-Retest Reliability, and Inter-Rater Objectivity of the Swimming Competence Assessment Scale (SCAS)

Jon Sundan, Norwegian University of Science and TechnologyFollow
Håvard Lorås, Norwegian University of Science and TechnologyFollow
Monika Haga, Norwegian University of Science and TechnologyFollow

Disciplines

Abstract

This study aimed to investigate the construct validity, test-retest reliability, and inter-rater reliability of a newly developed and comprehensive instrument for assessment of children’s swimming competence. The Swimming Competence Assessment Scale (SCAS) consists of six consecutive test items (entry, swim on front, surface dive, float, swim on back and exit) that aligns with the Norwegian curricular standard of swimming competence. The exploratory factor analysis retained a unidimensional model, supporting one underlaying statistical dimension with acceptable internal consistency (α = 0.79). Intraclass correlation coefficients (ICCs) between test and retest ranged from .84 to .98, and .97 for the total score. Strong agreement among raters was obtained with ICCs from .82 to .94, and .95 for the total score. This study provides empirical evidence in key psychometric properties for the SCAS as findings support the scale's construct validity, acceptable test-retest reliability and inter-rater objectivity.

Recommended Citation

Sundan, Jon; Lorås, Håvard; and Haga, Monika (2025) "Construct Validity, Test-Retest Reliability, and Inter-Rater Objectivity of the Swimming Competence Assessment Scale (SCAS)," International Journal of Aquatic Research and Education: Vol. 14: No. 4, Article 2.
Available at: https://scholarworks.bgsu.edu/ijare/vol14/iss4/2