An experimental design
a. is one in which the investigator has direct control over at least one independent variable.
b. is less capable of providing evidence of causal relationships than is an exploratory design.
c. is less internally valid than a descriptive study.
d. should be used only in realistic situations.
e. is best suited for longitudinal analysis.
Question 2
Typically, __________ experiments have greater internal validity, and __________
experiments have greater external validity.
a. lab; field
b. field; lab
c. field; field
d. lab; lab
e. The internal and external validities are usually the same for both types of experiments.
Infection prevention and control
Neural control of hormone release from the hypothalamus.
Control of blood glucose level.
The experimental system that permits observation of rotation in the F1 component of F1F0 ATP synthas
Importance of Considering Gestalt Principles in Product Design
Example of gene control in bacteria