The main purpose of theis study is to assess the effects of the interaction patterns between family planning workers and potential clients upon acceptance of family planning. This study was carried out as a part of an inter-country collaborative study and guided by UN-ESCAP in 1991. For data collection, a random sampling procedure was applied in picking up the final units of areas(nine "dongs" in Choonchon city, one county in Kyeonggi Province and two counties in Kangwon Province) 1,383 married eligible women, and 66 family planning workers in these areas were interviewed