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pro vyhledávání: '"Chandler Phelps"'
Autor:
Sophia Brown, Jesse Sheftel, Alex Brito, Chandler Phelps, Sherry A. Tanumihardjo, Michael R. La Frano, Rob Fanter, Chisela Kaliwile, Catherine Johnson
Publikováno v:
Curr Dev Nutr
OBJECTIVES: Vitamin A deficiency (VAD) has remained a leading cause of morbidity and mortality throughout the world for decades, however there are still challenges defining VA status because the most common biomarker, serum retinol, is regulated home
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::18586b8ade6756f8e285928b76d401d4
https://europepmc.org/articles/PMC8181636/
https://europepmc.org/articles/PMC8181636/
Autor:
Joseph Price, Chandler Phelps
Publikováno v:
Learning and Individual Differences. 51:322-326
We conduct a randomized field experiment in which elementary school students participated in a series of competitions using standardized math test problems. Prizes were rewarded to the top scorers in each round. Students in the treatment group were a