Which research article showed that East Asian parents used verbs more to their infants and toddlers? Which research article showed that East Asian parents used verbs more while White parents used adjectives more and had implications for causal and math learning? 

Please give the citation of the relevant article.
Dimensions of Human Behavior: The Changing Life Course
By Elizabeth D. Hutchison Chapter Language skills


Hoff, E. (2006). How social contexts support and shape language development. Developmental Review, 26(1), 55-88.