By 12 Months of Age
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Does not use a variety of vowel and consonant sounds during vocalization
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Does not babble
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No turn taking or sound imitation
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Does not request items by using a gesture & sound
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Does not follow simple directions with gestures
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No attempts to make words
By 2 Years of Age
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Less than 50 words vocabulary
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Using unintelligible speech
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Does not follow 2-step directions
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Does not understand approximately 200-300 words
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Does not use two-word phrases consistently
By 4 Years of Age
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Does not use the following sounds: S, Z, SH, CH, L, R
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Does not maintain a conversation
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Does not use 4-5 word sentences
By 18 Months of Age
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Less than 10 words of vocabulary
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Does not follow most directions
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Does not maintain eye contact during interactions
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Does not initiate verbal interactions
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Does not show an interest in looking at books
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Does not use the following sounds: B, P, M, N, T, D, K, G
By 3 Years of Age
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Not using approximately 80% intelligible speech
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Less than 50 words vocabulary
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Does not understand approximately 900 words
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Does not use 3-4 word sentences
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Does not answer simple questions
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Does not ask simple questions
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Does not use the following sounds: F, V
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Repeats the first sounds of words (i.e. b-b-ball)
By 5 Years of Age
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Not using most consonant sounds correctly and accurately
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Does not use 5-8 word sentences
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Does not tell a story
