Careful participant selection
A) should not include random selection.
B) reduces the probability of errors in the statistical computations.
C) provides good protection of internal validity.
D) controls for threats to external validity.
Answer: D
You might also like to view...
After WWII, the American migration to the suburbs was spurred by which of the following?
a. industrialization and globalization b. massive road building and government-guaranteed home loans for veterans c. the Grange movement and the accompanying need for more agricultural workers d. the Homestead Act and the Preemption Act
The most important industry economically to Russia today is __________
a. technology. b. steel. c. coal. d. agriculture. e. oil.
How does the ruling in Reynolds vs. Simms affect the practice of gerrymandering?
a. Interest groups must be affiliated with political parties. b. Rules around redistricting were relaxed. c. Districts must have populations that are roughly equal. d. Redistricting was no longer dependent on reapportionment.
Issues regarding external validity can be partitioned into several categories. Which of the following is NOT one of those categories?
a. population b. ecological c. spatial d. temporal