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Psychology Research Guide

Boolean Terms in PsycInfo

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chart of boolean language AND OR Not showing two circles intersecting in different ways to demonstrate the affect of using these terms

Boolean Terms are simple words (AND, OR, NOT or AND NOT) used as conjunctions to combine or exclude keywords in a search, resulting in more focused and productive results. This should save time and effort by eliminating unrelated results, giving you more to scan through before deciding which results are relevant.