A threat to internal validity that refers to the fact that the researcher knows the research hypothesis and thus causes an invalid confirmation of the research hypothesis is known as
a. a demand characteristic.
b. experimenter bias.
c. a placebo effect.
d. an informed experimenter effect.
Question 2
Experimenter bias refers to
a. the mistreatment of participants.
b. the participants' interpretation of the experimental manipulation.
c. differences in the participants' responses to the experimental manipulation.
d. differences in how the experimenter treats the participants.
Internal and External Environment
Controlled Scientific Experiments Scientists use experimental research to test hypotheses
Internal organs of the female reproductive system within the pelvis
Research Methods: A Process of Inquiry
Scientists do research in the laboratory and in the field
The body’s survival depends on mechanisms that maintain internal homeostasis