Author Question: In an experiment, the researcher was unintentionally talkative to one of the participant groups. ... (Read 131 times)

drink · **on:** Jun 20, 2018

In an experiment, the researcher was unintentionally talkative to one of the participant groups. What best describes the threat to internal validity and why is it a threat?

a. Randomness, since being talkative can make this particular group more relaxed and better able to perform.
b. Participant-maturation interaction, since being friendly to one group can introduce a confound.
c. History, since this unintended interaction was not part of the independent variable, a confound was introduced.
d. Testing, since the other group might feel cheated for being treated more formally by the researcher, and this introduces counterbalancing.

Question 2

For a study to be considered a true experiment according to Campbell and Stanley, there must be at least ____ level(s) of the independent variable.

a. random
b. 1
c. 2
d. 3