The failure to replicate was of their test, not of the initial observation. Specifically it was considered interesting why the distribution of grades in CS (apparently typically two-humped) was different from eg mathematics (apparently typically one-humped). As far as I know this still remains to be explained.
The failure to replicate was of their test, not of the initial observation. Specifically it was considered interesting why the distribution of grades in CS (apparently typically two-humped) was different from eg mathematics (apparently typically one-humped). As far as I know this still remains to be explained.