  Our recent study showed that two lab courses, whose goals were exclusively to
reinforce material developed in the lecture courses, do not have any impact on
exam performance at the 1% level. In this study, we replicated this analysis
with a modified version of one of these lab courses whose goals also included
modeling, designing experiments, and analyzing and visualizing data. This
modified course used the same sets of apparatus as the previous version, but
changed the pre-lab and in-lab activities to focus on developing and testing
models with data. The study evaluated the impact of these additional goals and
activities. We found that they did not affect students' performance on the
final exam.
