Normal speech and language development can proceed at very different rates. It is common for most 2 year-olds to have a 40-50 word vocabulary and to be just starting to put 2 words together. Others may be able to carry on a conversation. An evaluation would be recommended for 2 year-old children in the following situations: no spoken words or fewer than 40 words, not imitating words, or difficulty understanding language. An audiological evaluation is also recommended to rule out a hearing component present.