How many treatment combinations are there for a 3 × 3 × 3 factorial design?

Which of the following is an example of hostile aggression?

a. Randy spontaneously yells at Eric saying "You're a big jerk!" and then kicks him b. Janelle grabs the Barbie doll out of Lisa's hands c. Marcus throws the ball at the wall after being picked last for the baseball team d. Vivian, after having a fight with Nicole, tells all of her friends to avoid Nicole

According to the text, in Western nations, middle childhood extends from about age:

a. 4 to 8 years b. 5 to 10 years c. 6 to 12 years d. 8 to 12 years