According to your text the research should report any difficulty obtaining samples because of the increased threat of
A) pretest-treatment interaction.
B) multiple-treatment interference.
C) selection-treatment interaction.
D) experimenter effects.

Question

Quizplus · Accepted Answer

The increased threat in obtaining samples due to external factors such as pretest-treatment interaction, multiple-treatment interference, and experimenter effects are not mentioned in the text. However, the text implies that there could be difficulty obtaining samples due to selection-treatment interaction, which is characterized by a situation where the participants' selection into different experimental conditions affects the effectiveness of the treatments. Therefore, the best choice is C.

According to Your Text the Research Should Report Any Difficulty