Question

QUESTION 2 If our IV is supplemental social media assignments (yes or no) and DV is participation in class discussion (as measured by frequency of participation), and we find that participation increases from the beginning to end of the semester for those with the supplemental social media assignments, and if we can rule out regression threats, why can't we definitively conclude that social media assignments improve class participation? Write a type of threat to internal validity that may be at play. *Spelling counts

Answer 1

Maturation is a type of threat to internal validity that might be at play here. Since the testing of the DV occurs over a span of a year, it is likely that certain biological or psychological developmental processes will vary with the passage of time.