This study reports on the psychometric evaluation of the Emotion Regulation Questionnaire for Children and Adolescents (ERQ-CA), a revision of the adult measure. The ERQ-CA was evaluated with a sample of 827 participants aged between 10 and 18 years. Results indicate sound internal consistency as well as stability over a 12-month period. Sound construct and convergent validity are also demonstrated. It is concluded that the ERQ-CA is a valid age-appropriate measure for investigating the use of 2 specific strategies of ER during the childhood and adolescence developmental periods. (PsycINFO Database Record (c) 2011 APA, all rights reserved).