Comparison of exam performance between treatment conditions.

<p><i>Raw exam percentages</i> are the total score achieved on the entire exam. <i>Performance on 50 shared items</i> represents the total score on the entire exam for the standard treatment, and the total score on the 50 shared items included within the 100-question exam in the extended treatment. <i>F</i>-statistic and <i>p</i>-value for ANCOVA, using pre IMCA scores as a covariate, are reported.