The purpose of this report is to investigate the factors considered to have children spend more time playing outside rather than inside their houses. The questionnaire prepared for the 4th and 6th graders was sent in 1993 to a primary school in Kagoshima City as well as to three schools in northeastern part of Kagoshima Prefecture, and 494 answers were obtained. The questionnaire covered the children's play habits, their life after school, and their families' relationship with neighbors. The results may be summarized as follows :
1) Many children in rural areas play outside and their families have more interactions (in various ways) with their neighbors than their counterparts in urban area.
2) By the analysis made by the quantification theory type II, the factors attributed to have children play outside were varied among those in urban and rural areas. The primary factor for less frequent outside playing among the urban children, however, is due to the fact that they play at their friends' or neighbors' house. So far as the behavior of the children in rural area is concerned, the results of the quantification theory type II are not reliable. However, the highest scoring factor to keep children inside their home is their low degree of desire to play. The writer was unable to determine which factors dominate in having children in rural areas play outside.