Randomization in an experimental design assures
a. external validity of the findings.
b. the relevance of the hypothesis in question.
c. accurate observation of the dependent variable.
d. statistical equivalence of groups.
e. lack of pretest sensitivity.
Question 2
The fact that young children's articulation problems often disappear by themselves over time indicates why researchers must use ____in order to have internal validity.
a. control groups
b. informed consent
c. objective measurement
d. pre- and postmeasures
e. statistical analysis
Experimental evidence of the effect of allelochemicals on plant production.
External Ear
The arrangement of the external eye muscles: (A) lateral and (B) anterior views.
Use an Automated External Defibrillator
In a multiair engine design, the exhaust valves are opened by the exhaust camshaft lobes. Intake ...
Structural of external, middle and inner ear