Studies of early-developing consonants (stops, nasals, and glides) in babbling have shownthat most of the variance in consonants and their associated vowels, both within and betweensyllables, is due to a “frame” produced by mandibular oscillation, with very littleactive contribution from intrasyllabic or intersyllabic tongue movements. In a study of fourbabbling infants, the prediction that this apparently basic “frame dominance”would also apply to late-developing consonants (fricatives, affricates, and liquids) was tested.With minor exceptions, confirming evidence for both the predicted intrasyllabic and intersyllabicpatterns was obtained. Results provide further evidence for the frame dominance conception, butsuggest that the early rarity of late-developing consonants may be primarily a result ofintrasegmental production difficulty.