In a Guatemalan study that examined nutrition and development, children who were classified as having were more likely than children with to explore new environments in middle childhood and persist in a frustrating situation.

In a Guatemalan study that examined nutrition and development, children who were classified as having high-nutrient-level were more likely than children with low-nutrient-level to explore new environments in middle childhood and persist in a frustrating situation.

Explanation:

In this study Women and children from four Guatemalan villages were considered in a voluntary food supplementation program for seven years. In two of the villages, supplements  rich in  vitamin and mineral fortified, high-protein calorie was given and In the other two villages, the vitamin-mineral fortified supplement contained no protein or the  content was relatively smaller . Various cognitive test where conducted and it was concluded that  both nutritional and social environmental measures are related to various dimensions of cognitive competence.

The results suggest that nutritional intake, independent of social factors, affects cognitive development of an individual

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chronological thinking is an indispensable tool to structure a historical narrative and to give meaning to a sequence of events. the final section presents the results of a survey to test the chronological thinking of lower secondary school students carried out by the educational research institute.