Current estimates indicate that about ______ percent of people over age 65 suffer from Alzheimer's disease

Kyle and his older sister are playing a game together and when his sister suggests that they change the rules to make the game more fun, Kyle readily agrees. According to Piaget, Kyle is exhibiting:

A) the morality of cooperation. B) the morality of constraint. C) conventional moral reasoning. D) preconventional moral reasoning.

In causal studies, the interest is in the effects of some cause on one or more ____

a. treatments b. constructs c. operations d. outcomes