A researcher is interested in whether a new reading program for 5th graders will lead to better performance than a traditional program. She is also concerned that the program effects might vary or be confounded with prior reading achievement. Hence, she includes prior reading achievement in her study as a variable. The control technique she used in this study was:
a. Matching
b. Random assignment
c. Holding the extraneous variable constant
d. Building the extraneous variable into the design
Ans: d
You might also like to view...
Persons who participate in the interview process with potential job candidates might
include ____. a. ?the director b. ?a classroom teacher c. ?a parent d. ?all of these answers
Open-ended questions may be used in pilot interviews in order to
a. save time. b. facilitate the process of quantifying the results. c. identify the possible alternative responses for closed questions. d. all of these are true.
Native Americans are made up of
a. American Indians. b. Native Alaskans. c. over 300 recognized tribes or bands. d. all of the above.
Sheila is a physicist who has been successfully solving physics problems for years. Tamara is a beginning physics student. Which one of the following differences between Sheila and Tamara are we most likely to see in terms of how they approach physics problems?
a. Sheila is more likely than Tamara to make sure the problems are well-defined before she begins to solve them. b. Sheila is more likely than Tamara to classify problems based on their superficial characteristics. c. Sheila is apt to retrieve less information from long-term memory than Tamara retrieves. d. Sheila is more likely than Tamara to have functional fixedness when she works on problems.