A factorial design in which participants are randomly assigned to groups is called a ________ design

Professor Clark gives her students an assignment to develop hypotheses on global warming. To be consistent with a scientific method, students should develop their hypotheses based on

A) their own existing beliefs about the issue. Incorrect. In fact, for research to be as "clean" and accurate as possible, researchers have to be very careful NOT to let their own beliefs or biases influence their research. B) reports discussed on television. C) untestable predictions. D) a well-supported scientific theory. Correct. A hypothesis is a testable prediction derived from a scientific theory.

Critical thinking is used in psychology to evaluate theories by collecting

a. introspective analyses. b. empirical evidence. c. intuitive data. d. expert opinions.