Physical Literacy in Children Questionnaire: Adaptation, Validity, and Reliability Evidence for 4–12-Year-Old Greek Children

This study adapted the Physical literacy in children questionnaire (PL-C Quest) for Greek children (4–12 years; N = 552, Mage = 9.2 ± 2.2 years) and conducted comprehensive psychometric analyses: (1) Confirmatory factor analysis (CFA) tested a four-domain model (physical, psychological, social, cognitive) with higher-order factor (physical literacy); (2) Multi-group CFA examined measurement invariance across sexes; (3) convergent validity was assessed through Average Variance Extracted (AVE) and Composite Reliability, with additional Pearson's correlations against the Canadian Assessment of Physical literacy-2 scores (n = 90); (4) discriminant validity was evaluated via AVE comparisons; (5) Cronbach's α was used to evaluate internal consistency; and (6) test–retest reliability was determined through Interclass Correlation Coefficient in a subsample (n = 120). Results supported the model's adequate fit, measurement invariance, and moderate convergent validity. While discriminant validity was limited, reliability metrics were strong. The PL-C Quest (Greek) demonstrates adequate psychometric properties for assessing perceived physical literacy, facilitating monitoring and program evaluation.