A Researcher Reports That a Classroom Where Students Received Points

Multiple Choice

A researcher reports that a classroom where students received points that could be exchanged for extra recess time whenever they completed math practice problems saw an average increase of five completed homework problems per child per day compared to baseline. In terms of evaluating the effectiveness of this program, the researcher would most likely focus on:

A) Changes in level of response
B) Changes in the range of variability
C) Changes in immediacy
D) Changes in trend