The study involved children in Taira, located on the northeast coast of Okinawa; Tarong, located in the northwest corner of the island of Luzon in the Philippines; Khalapur, a village in northern India; the Nyanongo people of western Kenya; Mixtecan-speaking Indians residing in Juxtlahuaca in the Mexican state of Oaxaca; and Orchard Town, a New England town founded by Baptists.

This title is part of UC Press's Voices Revived program, which commemorates University of California Press’s mission to seek out and cultivate the brightest minds and give them voice, reach, and impact. Drawing on a backlist dating to 1893, Voices Revived makes high-quality, peer-reviewed scholarship accessible once again using print-on-demand technology. This title was originally published in 1978.