Recent conceptualizations of child anxiety disorders have implicated emotion dysregulation in the development, maintenance, and/or exacerbation of these conditions. Assessment of emotion regulation in children often relies upon self-reports, but research suggests a multi-informant approach is optimal in the assessment of youth. The current study evaluates the preliminary psychometric properties of a parent-report adaptation of the Emotion Expression Scale for Children (EESC-P) in a sample of parents (n = 78) seeking treatment for their child’s anxiety disorder (M
child age = 11.04, SD = 2.96, 46.8 % female). Findings support the internal consistency and predictive validity of the EESC-P. Parent–child concordance was low-to-moderate within a subset of participants whose children completed the EESC. Scores on the EESC-P did not differ as a function of age or gender. Results preliminarily support the use of the EESC-P as part of a multi-informant assessment of emotional awareness in children with anxiety disorders.