with age, significantly between the ages of two and six years old from 500-5000ms. Children 2 years of age exhibited a mismatch negativity response in the interstimulus interval between 500 ms and 1000 ms. Children 3 years old have a mismatch negativity response from 1 to 2 seconds, 4-year-olds over 2 seconds, and 6-year-old children from 3 to 5 seconds. These developmental and cognitive changes occur at a young age, and extend into adulthood until eventually decreasing again at old age.

Researchers have found shortened echoic memory