29 Aug
2011
29 Aug
'11
3:03 p.m.
On Monday 29 August 2011 17:46:33 Michael Kleber wrote:
Why even bother, with a true/false exam? Only two choices makes it clear that "all wrong" and "all right" are equivalent.
The 200% thing provides students with a way to say "I am very confident that all my answers are correct". Having that level of confidence and being right presumably correlates with knowing the material very well indeed -- better than can be identified merely by having got everything right, on a true/false exam -- so the exam gains a little bit of extra dynamic range. -- g