Fourteen Medical Students in Their Last Year of Training Are

Multiple Choice

Fourteen medical students in their last year of training are asked to make diagnostic decisions under three conditions: alone, with two senior doctors present and in a simulation of a chaotic emergency department. Twelve first year medical students are also asked to complete the same task conditions.
-8) In the analysis described above the interaction effect will:

A) Be a between groups factor
B) Be a within subjects factor
C) Have its own error term different from that for the within conditions factor
D) Have no error term