Scenario: Developmentally, most 3-year-old infants can succe…

Scenario: Developmentally, most 3-year-old infants can successfully copy a circle or a cross. However, they are typically unable to accurately copy a diamond shape until age 6 or 7 or even later. Researchers suggest this is not purely a lack of fine motor control, but rather a limitation in cognitive processing. Which of the following best explains why a diamond is significantly more difficult for a younger child to copy than a cross?