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This study explored three aspects of the 2-month-old's perception of multisyllabic utterances. Questions addressed were: (1) Do infants perceive phonetic contrasts occurring either in the initial (Bada-Gada) or medial (Daba-Daga) positions of multisyllabic utterances; (2) Are infants more likely to perceive these contrasts in stressed as opposed to unstressed syllables; and (3) Will infants detect a difference between two stress patterns? Thirty-six infants, 6 to 9 weeks old, were exposed to one of three conditions of bisyllabic stimuli. Each subject participated in two different sessions. Responses were measured by changes in sucking rate. Results indicated that: (1) Two-month-olds are sensitive to place-of-articulation differences occurring in either the initial or medial positions of multisyllabic stimuli; (2) Whether the contrast occurred between stressed or unstressed syllables has little or no effect on the infant's ability to detect it; (3) Infants as young as two months of age detect differences between stress patterns. (Author/SB)