In the sixth century BCE, the philosopher ______ set the stage for understanding human behavior and experience as related to internal processes and natural causes. He is also known for his theorem regarding the sides of a right triangle.

Tess agrees to sleep in an artificial setting for three nights so that researchers can obtain information about her brain and muscle activity during sleep. She is taking part in a research method called _______________

a. a single-blind study b. a double-blind study c. naturalistic observation d. laboratory observation

If a psychological test is standardized:

a. it has been approved for use by the APA. b. it is always administered to a random sample of participants. c. it has been demonstrated to be valid. d. uniform procedures have been developed for giving and scoring the test.