The first exam is in the record books now, and considering this was the first formal exam many of you have taken in awhile, I would say you did very well! Here are the overall test-level statistics BEFORE any adjustments:
I can live with a raw mean score of nearly 85%, and the standard deviation is acceptable. One student even scored 100%, which is not an easy thing to do on these types of assessments!
Examining the statistics for each item revealed only three potentially problematic questions. These are presented below with a brief explanation of the results.
This was the only item that was missed by more than half the class. The reason why the reinforcement is "intermittent" in this example is because it is assumed that the each student was called on "in random order"...but not every time. To be honest, the phrase "not every time" should have been included in this scenario, so I think that anybody who selected "continuous reinforcement" should not be penalized. So I did adjust the scores of those who selected "Continuous Reinforcement", which brought the overall average exam score to 87%. Nice.
This item was tricky for me too, because I tried to write a negative reinforcement scenario. But there is no denying that from Jeremy's perspective (the behavior of interest in this scenario), being paired with Justin is a response stimulus that is added (not removed), leading to reinforcing Jeremy's behavior of throwing fits. Just because the behavior that is being reinforced is negative behavior (throwing fits) from the teacher's perspective doesn't mean the reinforcement is negative. So this ended up being a challenging scenario, but one that is clearly positive reinforcement.
This was the only other item that was missed by 50% of the class or more. And the reason for this being missed by many is really quite simple. The directions state "Choose all that apply", which means many figured that more than one choice would need to be selected for a correct answer. It WAS pointed out in the directions for the exam that "Choose all that apply" could very well mean only one choice is correct...but old habits die hard, and I am sure this is the only reason why half the class selected another response besides the obvious "Aspects of the theory are not logically consistent". Eight students also thought that "the theory can be falsified" indicated it was a bad theory. Of course, it is just the opposite. All scientific theories MUST be falsifiable, or they are not scientific. It truly is the beauty of science.