After IMF relief loan at 1998, the Korean Government realized the necessity of making government officials knowledge-oriented and more logical, more critical, introduced Public Service Aptitude Test(PSAT) as the primary examination for recruiting junior administrative officials since 2004. PSAT is composed of three fields, Language and Logic, Date Analysis, Situational Judgement, all of which evaluate learning and logical thinking ability. In particular, Language and Logic Field evaluates reading comprehension, logical construction and inference, critical thinking. After introduction, PSAT brings several positive results as follows: reduction of examination burden and period, changing preparation method of exam to critical reading and logical debates, increase of concern in public educations such as the liberal arts course of college.