Jeff and Dan Are Identical Twins

Multiple Choice

Jeff and Dan are identical twins. Jeff was raised by their grandmother and Dan was raised by their aunt. Because of her age, the grandmother's interactions with Jeff were mostly sedentary as she spent a lot of time reading him books; in contrast the aunt interacted with Dan on a very physical level, showing him how to stack blocks, climb stairs and crawl. Based on the research findings of Arnold Gesell, what would you conclude about the twins' motor skills?

A) Dan had superior motor skills throughout their childhood.
B) Ultimately, the differences between Jeff and Dan's motor skills are negligible.
C) Dan will not only have superior motor skills, but will also be taller than Jeff.
D) Dan will have superior motor skills; Jeff will have superior verbal abilities.