Random assignment increases __________, random selection increases ___________.
A) internal validity; external validity
B) external validity; internal validity
C) generalizability; replicability
D) random error; systematic error

Question

Quizplus · Accepted Answer

Random assignment increases internal validity because it helps ensure that participants in different groups are equivalent, and any differences observed between groups can be attributed to the variable being manipulated. Random selection increases external validity because it helps ensure that the sample is representative of the population of interest, and findings can be generalized to the larger population.

Random Assignment Increases __________, Random Selection Increases ___________

Random Assignment Increases , Random Selection Increases _