The central features of what experiment type include (1) independent and dependent variables, (2) pretesting and posttesting, and (3) experimental and control groups created through random assignment?
a. casual experiments
b. statistical experiments
c. classical experiments
d. cardinal experiments
Question 2
If randomization is not possible, what should the researcher do?
a. pre- and posttest
b. use the classical design
c. consider using a quasi-experimental design
d. randomization is always possible
This diagram shows a cross-section of a solar-type star.
Common structural features of bacterial cells
Major features of the Solar System (not to scale)
Map of the Moon by Johannes Hevelius from his Selenographia (1647), the first map to include the lib
The Experiment by Albrecht, 1978
Central Nervous System Stimulants That Are Scheduled Drugs