A self-report tool used to assess for symptoms of anxiety in children. The MASC is available in two forms—MASC (the full version) and MASC-10 (the short version). The MASC consists of 39 items spread across various domains—Harm Avoidance, Social Anxiety, Physical Symptoms, Anxiety Disorders, Separation/Panic, Total Anxiety Index, and Inconsistency Index. The Inconsistency Index helps to recognize any reporting mistakes and errors, and the Total Anxiety Index identifies respondents whose anxiety scores warrant further clinical follow-up. The primary MASC scales—Harm Avoidance, Social Anxiety, Physical Symptoms, and Separation/Panic—can be further broken down into sub-scales—Somatic Symptoms, Tense Symptoms, Perfectionism, Anxious Coping, Humiliation Fears, and Performance Fears. Due to its comprehensiveness, the MASC is most appropriate for initial screenings. The MASC-10, which contains ten items exclusively measuring anxiety, allows for a rapid screening for anxiety symptoms, and is meant as a tool for monitoring progress over time. Questionnaire responses for both MASC versions are scored on a 4-point scale, ranging from “Never True About Me” (0) to “Often True About Me” (3). The tool should be administered by a clinician, or trained professional. Administration times for the MASC average about five minutes for the MASC-10 and 15 minutes for the full-version MASC