Questionnaire for Measuring Stressors and Intensity of Parental Stress (Upitnik izvora i intenziteta roditeljskog stresa, UIIRS) was originally developed for measuring parenting stress among parents of preschool children. The aim of this study was to examine its psychometric characteristics when administered to mothers of lower primary school children in order to determine its applicability to other samples. In an online study, 275 mothers completed the UIIRS, DASS-21 and External Orientation Scale. Two factors were extracted from the results on the 13 UIIRS-subscales, explaining 65.83 % of the total variance. The first factor included the characteristics of the child and the direct parent-child interaction, whereas the second factor contained the contextual sources of parenting stress. Convergent validity of the UIIRS was demonstrated by statistically significant positive correlations between its total score and levels of stress, depression, anxiety, and external locus of control. Cronbach alpha coefficients indicated that all the subscales and the UIIRS as a whole, had satisfactory internal consistency. Overall, the results of the conducted psychometric validation favor the applicability of the UIIRS to mothers of lower primary school children. Further research is needed to examine the applicability of the UIIRS to fathers, and the need to add sources of stress specific for parenting lower primary school children.

Questionnaire for Measuring Stressors and Intensity of Parental Stress, mothers, lower primary school children, psychometric validation