In contrast to Freud's theory, the neo-Freudians placed more importance on the role of _____ in achieving healthy personality development

In the field of behavior genetics, researchers study

A) the relative roles of nature and nurture. B) how genes behave when combined with other genes. C) how parents and other adults influence behavior. D) only the impact of DNA and other genetic factors.

If an investigator wants to be able to include more than one independent variable, more than one dependent variable, and wants to partial out a variable, the appropriate procedure is

A) factor analysis. B) analysis of covariance (ANCOVA). C) multivariate analysis of variance (MANOVA). D) multivariate analysis of covariance (MANCOVA).