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 and cross-sectional view of an infarct caused by a myocardial infarction.
External and internal positions.
External acoustic meatus
Masamichi Udagawa and Sigi Moeslinger, Antenna Design, Knoll Toboggan Chair.
Structural of external, middle and inner ear