Human papillomavirus is the leading cause of cervical cancer in women

Which type of evidence is considered valid in psychological research?

a. Theoretical b. Psychic c. Hypothetical d. Empirical

When a child applies a word in a much narrower sense than is needed—for example, thinking that the word "house" refers only to their own house—they are engaging in

A) overextension. B) overregulation. C) underextension. D) underregulation.