ages

Question 1

categorization: after 3

Answer 1

• show the same reasoning patterns about natural kinds and man-made artifacts as adults
• easily grasp concept of essentialism
• understand naturalkinds have an unchanging property

Question 2

categorization: before 3

Answer 2

can’t grasp general categories

Question 3

language: 10-18 months

Answer 3

• holophrastic speech begins (single word is used to indicate meaning of a more complex idea)
• overextensions/underextensions

Question 4

language: 18-24 months

Answer 4

• telegraphic speech
• short phrases that contain only the most crucial information
• naming explosion/word spurt
• follows simple verbal directions
• asks for familiar items by name
• starts combining words (‘more juice’)
• imitates animal sounds

Question 5

language: 0-4 months

Answer 5

• turn head to sound source
• make noise when spoken to

Question 6

language: 6-12 months

Answer 6

• imitate sounds
• later babbles
• understands no

Question 7

language: 12-17 months

Answer 7

• answer simple Qs non-verbally
• point to objects and people
• follow simple directions when paired with gestures
• uses 1-3 words in combination

Question 8

language: 24 months/2 years

Answer 8

• uses approx. 50-250 words

Question 9

language: 2-3 years

Answer 9

• speaks in 2-3 word phrases
• answers simple questions
• begins to use plurals/past tense

Question 10

language: 5 years

Answer 10

• understands more than 2000 words
• uses longer sentences (at least 8 words in length)
• can engage in conversation

Question 11

language: 6 years

Answer 11

• understands more than 10,000 words
• continues to develop sentence structure

Question 12

language: 8-12 weeks

Answer 12

• start cooing
• “oo” and “aa” sounds