Closed book tests are a test of memory, while open book tests can actually test the understanding of a subject by having all the basic information available and then requires the use of finding and correctly utilising that information to get the desired answer.
Xikub t1_ja4drk8 wrote
Reply to comment by DroolingSlothCarpet in LPT Request: Making notes for studying, avoid "essay-like" styles, instead use schemes, tables, pictures and hierarchies as much as possible by Tiara2002
You, by the sounds of your critical thinking.
Closed book tests are a test of memory, while open book tests can actually test the understanding of a subject by having all the basic information available and then requires the use of finding and correctly utilising that information to get the desired answer.