Theories of language development hold that an infants early attention to speech is crucial for acquisition of the unique properties the infants native language. The following studies investigated whether this bias is specific to speech, or reflects a general interest in all human languages. Six- and ten-month-old hearing infants were shown sign language stories and pantomime sequences in a preferential looking task. The 6-month-olds indicated a preference for sign language, but not when the stimuli were reduced to point-lights. The 10-month-olds did not show a preference for either motion type, consistent with the language-general to language-specific trend found in the first year of life.