This article presents a sub-study of low-birth-weight children included in randomized cluster trial of a 22-element micronutrient powder (MNP) nutrition intervention intended to improve linear growth and reduce anemia. In this study, the authors measured the effects of the MNP on mental development. They found that the stunted children who received the MNPs had higher expressive language scores compared to the stunted children in the control group. The authors observed no effect on cognition, consistent with previous studies mentioned in the article.
Singla, Daisy R., Sohana Shafique, Stanley H. Zlotkin, and Frances E. Aboud. "A 22-Element Micronutrient Powder Benefits Language but Not Cognition in Bangladeshi Full-Term Low-Birth-Weight Children." Journal of Nutrition, no. 114 (2014).