This study validated the I-SEE-PL-12, a Polish version of the I-SEE-DE-12, measuring multidimensional control beliefs. Confirmatory factor analyses in Polish (n = 351) and German (n = 506) samples supported a four-factor model over a unidimensional structure. Reliability was acceptable (α = .752– .843, ω = .762–.844). Measurement invariance analyses confirmed configural and metric invariance across countries and genders, with partial scalar invariance due to one item. Internality and self-concept of ability correlated positively with positive affect and negatively with negative affect, whereas externality showed the reverse pattern. Age was associated with higher internality and lower externality, reflecting age-related differences rather than developmental change. These results demonstrate that the I-SEE-PL-12 is a valid, reliable, and largely invariant tool suitable for cross-cultural research on control beliefs. Practically, it offers researchers and practitioners a concise, theory-based measure for large-scale psychological surveys and cross-national comparisons, facilitating culturally sensitive assessment of control-related constructs.
Julia et al. (Thu,) studied this question.