It is widely accepted that premenstrual syndrome is a myth

The endocrine system is made up of

a. special centers which control our language functions. b. neurons which transmit electrically charged messages. c. glands which release hormones into the bloodstream. d. none of the above

The practice of physiognomy, as well as that of phrenology,

have been summarily discredited by modern scientific research. As it turns out, the bumps on a person's head and one's facial characteristics give virtually no information about their personality characteristics. This is an important reminder of the importance of the critical thinking principle of A) falsifiability. B) correlation versus causation. C) extraordinary claims. D) ruling out rival hypotheses.