The ________ technique could be used to trace axons that are afferent to the injected region

Professor House believes that regular exercise boosts academic achievement. To find out if that is true, she compares, over the course of six months, the academic achievement of a group of students who, by their own admission, get little or no exercise, with that of a second group of students who exercise regularly. This is an example of a(n):

A) double-blind study. B) expectancy study. C) quasi-experiment. D) clinical trial.

What did researchers find in cross-cultural studies of attachment?

A) Insecure attachment was more common in western cultures. B) European countries value independence, fostering insecure attachment. C) Avoidant children were more common in Israel and Japan. D) Secure attachment is the most common pattern in the eight countries studied.