Question

Four students plan to conduct an experiment with four conditions (A, B, C, and D) during one semester. Each student will serve as an experimenter. The best way to control for the extraneous variable of having four experimenters test participants in the study is to ________

Answer 1

Answer: have each experimenter test randomized blocks of conditions.

Explanation:

Randomized block design is a technique used in controlling nuisance in an experiment due to excessive variables, experimental conditions, etc which can make the experiment complex/ complicated.