A researcher who observes a behavior, detects regularities in the behavior, generates a hypothesis about the behavior, and checks the accuracy of his or her predictions through additional observation is utilizing:

During middle childhood, children master many types of skills that earlier they could not perform well, such as riding a bike, ice-skating, swimming, and skipping rope, all of which involve ____________ skills

a. fine motor c. muscle b. gross motor d. none of these answers

Keith and Carrie have been discussing how long they should wait to have children. At what age, statistically speaking, will Carrie run out of fertile ova?

30s 40s 50s 60s