Hagemann, Strauss, and Leißing (2008)studied the effects of the color of clothing (red versus blue)in referees' judgments of tae kwan do ability. Referees viewed two sets of 11 videos in random order, and each set was counterbalanced. In effect, Hagemann accomplished
A)complete counterbalancing
B)block randomization
C)both a and b
D)none of the above

Question

Quizplus · Accepted Answer

Hagemann accomplished both complete counterbalancing and block randomization. Complete counterbalancing means that each referee saw each video in both the red and blue conditions. Block randomization means that the order of the videos was randomized within each block of 11 videos.

Hagemann, Strauss, and Leißing (2008)studied the Effects of the Color