This artcle stings:
Will at Work Learning: Assessment Mistakes by E-Learning Developers
While I don't fall into the category of those who only do L1 'Smiley' sheets, I know that often I could be going into L3 & L4 (ROI) studys a lot more. Generally, like most professionals, 90% of assessments seem to stop at the L2 level.
We've made it a goal next year to incorporate more L3 & L4(ROI) studies into our learning. Hopefully Will's results will be better next year.