An American psychologist whose development of the Law of Effect played a significant role in early studies of motor learning, and which today continues to influence the study of how people learn motor skills, was

Mark is a graduate student who interviews a group of 5-year-olds, a group of 20-year-olds, and a group of 50-year-olds and ask them about cultural issues. In this example, Mark is using a___ research design.

A) longitudinal B) cross- sequential C) factorial D) cross-sectional

The amount of education obtained by a person is termed __________

Fill in the blanks with correct word