Language Acquisition

stage from birth - ~2 months; when babies make involuntary sounds and might even develop differentiated THIS

• crying
• cooing
• babbling
• Holophrastic Stage

stage from ~2 - ~5 months; when babies make vowel-like sounds, THESE pleasant noises, & laughter; can take turns

• cooing
• babbling
• Telegraphic Stage
• 2-word stage

stage from ~5 months - ~12 months; when babies practice producing all kinds of speech sounds/handshapes

• babbling
• cooing
• Telegraphic Stage
• crying

when babies repeat one syllable over and over again

• Reduplicative/Syllabic Babbling
• Variegated Babbling
• Jargon Babbling
• Holophrastic Stage

when babies alter consonants or vowels in their syllables

• Variegated Babbling
• Reduplicative/Syllabic Babbling
• Jargon Babbling
• 2-word stage

when babies add prosodic or intonational patterns reminiscent of adult speech to their babbles

• Jargon Babbling
• Variegated Babbling
• Reduplicative/Syllabic Babbling
• Telegraphic Stage

babies acquiring this language babble with tones on individual syllables (just like in the adult version of the language)

• Chinese
• English
• French
• Hawaiian

stage around ~12 months; when babies start to create their own words

• protoword
• cooing
• babbling
• 2-word stage

perception test used on babies 0-6 months; involves a pacifier

• High Amplitude Sucking Technique
• Conditioned Head-Turn Procedure
• Wug Test
• fMRI

perception test used on babies 5-18 months; can tell if a baby hears new sounds by whether they move their heads or not

• Conditioned Head-Turn Procedure
• High Amplitude Sucking Technique
• Wug Test
• fMRI