[MidA] Tyrick is a 3-year-old learning sign language but has…
[MidA] Tyrick is a 3-year-old learning sign language but has poor fine-motor ability. A physical therapist starts working with Tyrick to strengthen his muscles and fine-motor control. A few years later, Tyrick is now performing his signs clearly to others and can better communicate with those around him. Which of the following is most likely an example of maturation effects in this scenario?
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