The observation that there is a tendency for gay men to have a larger number of older brothers than nongay men is known as the _____________ effect

Mrs. Hartley asked her second graders to draw a map of the school using their memory. The students' cognitive maps will probably

A) have an accurate arrangement. B) include landmarks. C) incorporate map symbols and a key. D) depict an organized route of travel.

Which statement is correct regarding brain development and aging?

A. The brain becomes smaller but denser and more efficient over time. B. The brain grows, taking up double the amount of space between the brain and the skull. C. The structure, function, and number of neurons in the brain are significantly reduced. D. Blood flow is reduced within the brain, and less glucose and oxygen are used.