The MASC C/P is a self-report questionnaire assessing youth anxiety symptoms. Both the youth and parent versions consist of 39 items and contain four main subscales: Physical Symptoms, Social Anxiety, Separation Anxiety/Panic, and Harm Avoidance. The item content and scales in each are identical, except that the items in the child version refer to “I” and those in the parent version refer to “my child.” It has demonstrated favorable psychometric properties in previous studies (Baldwin & Dadds, 2007 (link); Dierker et al., 2001 (link); March et al., 1997 (link), 1999 (link); Rynn et al., 2006 (link)), as reviewed in the introduction.