The myers briggs test is a really famous temperament test that describes your preferences and personality type. Here is a free version: http://www.humanmetrics.com/cgi-win/jtypes2.asp
If you're sure that's the issue, spend more time initially before beginning the questions. Either spend more time looking for inferences or how the rules will interact.
you can also use this structure for a url:http://7sage.com/lsat_explanations/lsat-58-section-4-question-17/ but type in which test, section and question number