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.
-10) In the research described above, the researcher is particularly interested in the difference in diagnostic decision scores between experienced and first year medical students in the simulation condition. A difference here would be an example of a:

A) Main effect
B) Interaction effect
C) Simple effect
D) Within groups effect