16대 국회 보건복지위원회의 법안 가결에 관한 연결망 분석 -의원들의 중개자 역할이 법안 가결여부에 미치는 영향-

This study examined the effects of cosponsorship network on the process of legislative bill adoption at the standing committee of Public Health and Social Welfare in the 16th congress in Korea. It revealed the strong and systematic effect of brokearage position in the cosponsorship network even after controlling for individual attributes of congressmen such as age, sex, party membership, and the number of getting elected. Not all types of brorkeage, however, had influence on the adoption. Two types of brokers, coordinator and representative, showed strong effec on the bill adoption while the other two types, itinerant and liason, did not. In other words, in order for the brokerage to have effect, at least one of the ties of the broker must have the identical party membership of the broker. Furthermore, the effect was positive on the adoption in the first half of the 16th congress while it turned into negative in the second half. I believe as tensions and power struggles between paries and policitcal coalitions intensified in the latter half of the 16th congress, which finally led to the first impeachment of the incumbent president in history, brokers not only lost their advantage but also were tagged as opportunists with strong stigma and thus had negative effects on the bill adoption.