Explain how random assignment is associated with internal validity and random selection is associated with external validity
What will be an ideal response?
Random assignment of participants to groups is useful for creating equivalent groups. Thus, differences at the end of the study are likely to be due to differences in the level of the IV. Random selection provides for representative samples because there are no biases that systematically include one group of people or exclude another group.
You might also like to view...
What does the author mean by unconventional activism? Provide examples, and describe Americans' attitudes toward unconventional activism.
What will be an ideal response?
The "balance of payments" is a calculation summarizing a country's financial transactions with the external world
a. True b. False Indicate whether the statement is true or false
The term nation and the term state mean the same thing
Indicate whether the statement is true or false
International institutions are gradually evolving in a post-Westphalian direction in which institutions are based on "justice among peoples."
Indicate whether this statement is true or false