Usability and psychometric properties of a battery of tools to assess intelligence, executive functioning, and sustained attention in Tanzanian children - Georg Loss; Hannah Cummins; Nicolaus Gutapaka; Jane Nyandele; Sylvia Jebiwott; Deborah Sumari; Thabit Athuman; Omary Juma; Susanne P. Martin-Herz; Ally Olotu; Michelle S. Hsiang; Günther Fink (PLoS ONE)