This study examines the basic psychometric properties of the Children's Response Styles Questionnaire (CRSQ; Abela, Rochon, & Vanderbilt, 2000). The Children' Response Style Questionnaires and The Children's Depression Inventory were administered to 312 (46.6%) participants from the fourth and 358 (53.4%) from the seventh grade. Participants were recruited via convenient sampling and were between the age of 9 and 15 years. Factor structures, convergent validity, and internal reliability were examined for the two samples. Two factor structures were confirmed for both samples via confirmatory factor analyses. The CRSQ was found to have satisfactory internal reliability and convergent validity for both samples. MANOVA was utilized to examine gender and grade differences, and the results revealed further validity evidences. As the theory suggests, the seventh-grade females had more ruminative tendencies than the fourth-grade females and seventh-grade males. Results are discussed in light of the related literature.