The condition where Maggie cannot hear sound differences that are important in languages she has never learned is an evidence for cognitive maturation.
In the field of science, cognitive development can be described as the development of the information processing skills of a child while he grows. However, as we reach adulthood, our cognitive abilities although polished in many ways, have difficulties in learning new things as compared to when we were a child. This phenomenon is referred to as cognitive maturity.
It is due to cognitive maturity that Maggie could process all linguistic sounds when she was a child. Now, as an adult, she has reached cognitive maturation and hence cannot process new sound differences.
Although a part of your question is missing, you might be referring to this question:
When Maggie was a baby she attended to all linguistic sounds. now as an adult, she cannot hear sound differences that are important in languages she has never learned. this is evidence for:
- cognitive inability
-cognitive thinking
-cognitive processing
-cognitive maturity
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