Assess students on their IL skills and ensure they demonstrate evidence of these skills by incorporating them into your grading rubric.
Assign grades to process-related tasks, rather than just the final product of the research. This can help ensure students are conducting the process adequately.
This can be as easy as awarding marks for the quality and relevance of sources rather than simply for the type and number of sources, or awarding marks for evidence of decision-making, selectivity and strategic searching with regard to information gathering and selection.
Find IL Assessment Rubrics here.