“…Yet these studies tend to examine a relatively similar set of family and child characteristics, including the age and ethnicity of the child, the employment status, education level, and marital status of the mother, and family income. Some studies include other potentially relevant variables, such as the number of other children in the household (Hunts & Avery, 1998;Singer et al, 1998), the age of the mother at the child's birth (Chyu et al, 2005;Singer et al, 1998), the immigration status or nativity of the mother (Brandon, 2004;Chyu et al, 2005;Crosnoe, 2007), and the primary language spoken in the household (Hirshberg et al, 2005;Liang et al, 2000). This section describes the findings of the literature on the family and child characteristics that are relevant to this study.…”