After deciding whether to breastfeed or formula feed, parents must determine when to introduce solid foods. We examined feeding behaviors of 131 first-time parents, applying the theory of planned behavior to our investigation. Results indicated that parents' attitudes influenced infant feeding behavior at 6 months old. Therefore, Extension professionals should consider providing programming and materials to encourage healthful attitudes, in addition to focusing on general nutrition information. Moreover, our sample relied heavily on health professionals, friends and family, and books or videos for infant feeding information, so Extension professionals should consider targeting other influential groups in addition to targeting parents directly.