According to research findings mentioned in the reference, an 18-month-old should know, on average, nine body-part words.
Based on a study cited in the provided material, the understanding of body-part vocabulary significantly increases during a child's second year. While 12-month-olds typically understood less than one body-part word, this knowledge rapidly expands. By the time a child reaches 18 months of age, the average number of body-part words they understand grows to nine words. This understanding continues to develop, reaching thirteen words by 24 months.
Understanding Body-Part Words at Different Ages
The reference highlights a clear progression in a child's ability to understand words for body parts:
| Age | Average Body-Part Words Understood |
|---|---|
| 12 Months | Less than one |
| 18 Months | Nine |
| 24 Months | Thirteen |
This data indicates that understanding nine body-part words is typical for children around 18 months, reflecting a key developmental milestone in language acquisition related to the body.
