Vocabulary burst about 2.5 years; 50 to 100 words in a few weeks⁹⁴

Uses few pronouns but might be used incorrectly (e.g., I, you, me, my)^{26, 41}

Uses few prepositions (e.g., in, on) ⁴¹

Names most things that he or she sees in a day⁴¹

Tells stories with prompting from adult⁴¹

Names at least one color⁴¹

Uses rising intonation to ask questions⁴¹

Uses 3-word sentences instead of jargon²⁶

Often refers to self in third person²⁶

States wants through words^{26, 43}

Comprehends possessives (e.g., mine, yours, etc)⁴¹

Understands under⁴¹

Recognizes common verbs and adjectives⁴¹

Recognizes and points to extended family members⁴¹

Understands more than 300 words⁴¹

Identifies items by their function⁴¹

Recognizes difference between big and little⁴¹