Key points are not available for this paper at this time.
Catherine S. Tamis-LeMonda, Marc H. Bornstein, Habituation and Maternal Encouragement of Attention in Infancy as Predictors of Toddler Language, Play, and Representational Competence, Child Development, Vol. 60, No. 3 (Jun., 1989), pp. 738-751
Tamis‐LeMonda et al. (Thu,) studied this question.