An increase in insulin triggers a(n) ________ in blood glucose levels and a(n) ________ in feelings of hunger.

Naturalistic observation, correlational studies, the clinical method, and the survey method are considered __________ methods

a. experimental b. nonexperimental c. nonscientific d. placebo bias

To select a random sample, what could a researcher do?

a. Take every nth person from a list of everyone in the population. b. Use cluster sampling to ensure the sample is representative. c. Use a table of random numbers. d. Ask respondents who wish to be in the sample to volunteer.