Abstract
The current study examined the psychometric properties of the 20-item Generative Acts Scale-Chinese version (GAS-C) among middle-aged and older adults as grandparents in mainland China. A total of 1013 grandparents (mean age = 58.32 years; 71.9% female) of children from 12 kindergartens were recruited using multistage cluster random sampling. A four-factor pattern of domestic, agentic, communal, and civic generative acts were identified by exploratory factor analysis and further verified by confirmatory factor analysis (CFA). Subsequently, multigroup CFA was performed to test the measurement invariance across gender, age group and hukou status at the configural, metric, and scalar levels. The Cronbach's alpha value of the total (0.923) and subscales (range from 0.897 to 0.953) was satisfactory, indicating high internal consistency. Additionally, the significant gender differences in the domestic (male = 3.565, female = 3.718, p < 0.05), communal (male = 2.786, female = 2.591, p < 0.01), and civic subscales (male = 2.112, female = 1.864, p < 0.001) and the significant correlations between the GAS-C total scale and subscales with caregiving intensity (r = 0.433, p < 0.01), positive affect (r = 0.397, p < 0.01) and life satisfaction (r = 0.328, p < 0.01), supported concurrent validity. Overall, this study addressed the knowledge gap by validating a reliable and valid instrument to measure grandparents' generative acts in mainland China, contributing to generativity studies cross-culturally in research and practice.