In language development, approximately how many words do 3- to 4-year-olds typically learn per day, and what is their approximate vocabulary size?

In language development, approximately how many words do 3- to 4-year-olds typically learn per day, and what is their approximate vocabulary size?

• A. 8-9 words per day; about 1,000 words
• B. 3-4 words per day; about 500 words
• C. 12-15 words per day; about 2,000 words
• D. 20-25 words per day; about 3,000 words

Answer: (A)

Preschoolers expand their word knowledge through daily language exposure, so they typically learn new words at a steady pace. On average, about eight to nine new words are learned each day, and this cumulative growth brings their vocabulary to roughly a thousand words by age four. This reflects both the words they can say and a much larger set they understand. Individual children vary, but eight to nine per day is a common pace for 3- to 4-year-olds. Rates that are much lower or much higher would place the estimated vocabulary outside what’s typical for this age range.

Preschoolers expand their word knowledge through daily language exposure, so they typically learn new words at a steady pace. On average, about eight to nine new words are learned each day, and this cumulative growth brings their vocabulary to roughly a thousand words by age four. This reflects both the words they can say and a much larger set they understand. Individual children vary, but eight to nine per day is a common pace for 3- to 4-year-olds. Rates that are much lower or much higher would place the estimated vocabulary outside what’s typical for this age range.