MSFinals-4450

A 3-year-old boy is brought to see the pediatrician by his father. He was born at 34/40 weeks gestation. His father is worried about cerebral palsy, as he has heard that premature birth can cause developmental problems. The child has been meeting all his developmental milestones, but his father is still concerned. During the examination, the boy shows normal power, tone, and reflexes in all four limbs.
What developmental problem would indicate a diagnosis of cerebral palsy in this 3-year-old boy?