1997. Revisionism in Ecological Anthropology. Current Anthropology 38:605-630.
1997. Limitation of Human Rights, Land Exclusion, and Tribal Extinction: The Agta Negritos of the Philippines. Human Organization 56:79-90. (Co-author: Janet Headland).
1996. Missionaries and Social Justice: Are They Part of the Problem Or Part of the Solution? Missiology: An International Review 24:167-178.
1996. Does Cultural Relativism Undermine Human Rights? Notes on Anthropology 23:1-13.
1991. The Tropical Rain Forest: Is It a Productive Environment for Human Foragers? Human Ecology: An Interdisciplinary Journal19:261-285. (Co-author with Robert C. Bailey.)
1991. Have Hunter-Gatherers Ever Lived In Tropical Rain Forest Independently of Agriculture? Human Ecology: An Interdisciplinary Journal19:115-122. (Co-author: Robert C. Bailey).
1990. What Are Plant Specifics? A Critique of Olofson's Search for the Tasaday. Philippine Quarterly of Culture and Society18:22-32.
1989. Population Decline in a Philippine Negrito Hunter-Gatherer Society. American Journal of Human Biology1:59-72.
1989. Hunter-Gatherers and Their Neighbors from Prehistory to the Present. Current Anthropology30:43-66. (Co-author: Lawrence Reid).
1988. Ecosystemic Change in a Philippine Tropical Rain Forest and Its Effect on a Negrito Foraging Society. Tropical Ecology 29(2):121-135.
1987. The Wild Yam Question: How Well Could Independent Hunter-Gatherers Live in a Tropical Rain Forest Ecosystem? Human Ecology 15:463-491. [Reviewed in Encyclopedia of Cultural AnthropologyTaking Sides: Clashing Views on Controversial Issues in Anthropology. Kirk Endicott and Robert Welsch, eds., 2001, second ed. 2003.]
1987. Kinship and Social Behavior Among Agta Negrito Hunter-Gatherers. Ethnology 26:261-280.
1985. International Economics and Tribal Subsistence: A Report of a Microeconomic Study of a Negrito Hunter-Gatherer Society in the Wake of the Philippine Crisis of 1983. Philippine Quarterly of Culture and Society 13:235-239.
1983. An Ethnobotanical Anomaly: The Dearth of Binomial Specifics in a Folk Taxonomy of a Negrito Hunter-gatherer Society in the Philippines. Journal of Ethnobiology 3:109-20.
1981. Information Rate, Information Overload, and Communication Problems in the Casiguran Dumagat New Testament.Notes on Translation 83:18-27.
1977. Teeth Mutilation Among the Casiguran Dumagat. Philippine Quarterly of Culture and Society 5:54-64.
1977. A Sketch of Western Bukidnon Manobo Farming Practices, Past and Present. Philippine Quarterly of Culture and Society 5:65-75. (Co-author with George Hires).
1975. The Casiguran Dumagats Today and in 1936. Philippine Quarterly of Culture and Society 3:245-257.
1974. Grammatical Sketch of Casiguran Dumagat. Pacific Linguistics A-43:1-54. (Co-author: Alan Healey).
1974. Anthropology and Bible Translation.Missiology: An International Review 2:411-419. (Reprinted in Notes on Translation [1984], No. 100:18-23)