MLU varies with age and is used to benchmark a child’s speech development against typical norms. Here are some general guidelines:
18-24 months: MLU is approximately 1.0 to 2.0. 24-36 months: MLU ranges from 2.0 to 3.0. 36-48 months: MLU ranges from 3.0 to 4.0. 48-60 months: MLU ranges from 4.0 to 5.0.
These values are just guidelines, and individual variation is expected. Consistently lower MLU values may indicate a need for further evaluation.
