In a study by Hyde and colleagues (1990), it was found that boys perform better than girls in word problems in __________

Timo, age 7, and Nora, age 9, had the same parents, rode the bus every day to the same school, and had their rooms at home across the hall from each other. Timo and Nora had a(n)

a. non-shared environment. b. identical genetics. c. shared environment. d. twin design.

The cerebral cortex is only one-eighth of an inch thick

Indicate whether the statement is true or false