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The Philippines are central to understanding the expansion of the Austronesian language family from its homeland in Taiwan. It remains unknown to what extent the distribution of Malayo-Polynesian languages has been shaped by back migrations and language leveling events following the initial Out-of-Taiwan expansion. Other aspects of language history, including the effect of language switching from non-Austronesian languages, also remain poorly understood. Here we apply Bayesian phylogenetic methods to a core-vocabulary dataset of Philippine languages. Our analysis strongly supports a sister group relationship between the Sangiric and Minahasan groups of northern Sulawesi on one hand, and the rest of the Philippine languages on the other, which is incompatible with a simple North-to-South dispersal from Taiwan. We find a pervasive geographical signal in our results, suggesting a dominant role for cultural diffusion in the evolution of Philippine languages. However, we do find some support for a later migration of Gorontalo-Mongondow languages to northern Sulawesi from the Philippines. Subsequent diffusion processes between languages in Sulawesi appear to have led to conflicting data and a highly unstable phylogenetic position for Gorontalo-Mongondow. In the Philippines, language switching to Austronesian in 'Negrito' groups appears to have occurred at different time-points throughout the Philippines, and based on our analysis, there is no discernible effect of language switching on the basic vocabulary., (© 2024. The Author(s).)

This article addresses the linguistic evidence from which details about Philippine "negritos" can be inferred. This evidence comes from the naming practices of both negrito and non-negrito peoples, from which it can be inferred that many negrito groups have maintained a unique identity distinct from other groups since the dispersal of Malayo-Polynesian languages. Other names, such as Dupaningan and Dumagat, reference locations, from which it is assumed the negritos left after contact with Malayo-Polynesian people. Evidence also comes from the relative positions of negrito groups vis-à-vis other groups within the subfamily with which their current language can be grouped. Many of these languages can be shown to be first order branches, suggesting early separation from the people whose languages they first acquired. The geospatial distribution of the northern languages of the Philippines closely matches the proposed dispersal routes of early Malayo-Polynesian peoples into the Cagayan River Valley and up the Chico and Magat tributaries from which negrito groups were displaced. One lexical item that is discussed is the word for the traditionally widespread practice of head-hunting, the term for which is reconstructible to Proto-Austronesian with reflexes throughout the Philippines and countries to the south. The practice was probably associated with agriculture and not only may have contributed to the early rapid spread south of Malayo-Polynesian languages through the Philippines and ultimately into the Pacific but also was later a major factor in the long periods of isolation of negrito peoples, during which the languages they had first acquired became very different from that of their former neighbors., (Copyright © 2013 Wayne State University Press, Detroit, Michigan 48201-1309.)