While the role of early maternal parenting practices in the development of executive functions (EFs) has received considerable attention in the literature, little is known about how specific parenting behaviours may be related to EFs within different racial groups. Therefore, the present study examines the joint impact of specific maternal parenting behaviours -- warmth and intrusiveness -- on EFs among African American children. The sample included 121 children and their mothers who participated in home and lab visits over the first five years of the child's life. As hypothesized, the interaction between warmth (i.e. positive regard) and intrusiveness predicted EFs. However, contrary to our hypothesis, the combination of high levels of warmth and high intrusiveness was associated with poorer EFs. This unexpected finding is discussed in the context of prior research.