There are still __________ births to teenage women each year, the vast majority of whom are unmarried

______ refers to the different situations or conditions that participants experience in an experiment because of the manipulation of the independent variable.

A. Interaction effect B. Levels of the independent variable C. Marginal means D. Factorial designs

Referring to behavior and personality as polygenic means that both are

A. influenced by only a few genes, but each has a large effect. B. influenced by many genes, with each individual gene contributing a relatively small effect. C. influenced by individual genes only rarely. D. a result of our genetic structure only.