Does TABS Assess Temperament and Regulatory Problems?
Support for the content validity of TABS comes from two sources. First, the individual items were developed from extensive reviews of the theoretical and descriptive literature on various disorders of infancy and early childhood. The behaviors characteristically associated with these disorders became TABS items. Thus, the items that compose TABS are either characteristic of or highly associated with a variety of serious disorders of infancy and early childhood. Second, four theoretically meaningful factors underlie TABS. The statistical methods and findings for establishing these factors have been provided in detail in the sections describing the development of TABS. Here we repeat that all four factors have Eigenvalues greater than 1 and that each factor accounts for at least 5% of the rotated variance. Most compelling, however, is that the factor structure of TABS is the same as that theorized independently by ZERO TO THREE: National Center for Infants, Toddlers, and Families in 1994
