ON THE RELATIONSHIP AMONG TRAVEL BEHAVIOR, TIME USE INVESTMENT AND EXPENDITURES IN SOCIAL NETWORKS

The Brofenbenner's Person-Process-Context-Time (PPCT) model and a two day time use diary database (of 1471 persons interviewed between November 2002 and May 2003 in Centre County, Pennsylvania) are used to first identify social network types based on reported activities, travel, and the types of persons with whom and for whom these activities and travel were completed. The social networks identified by the respondents include immediate family, relatives, friends, schoolmates, co-workers and business associates, members of a society or church, and all other. The amount of time allocated to activities is classified by the location where activities took place such as home, work, school, and elsewhere to examine the "placial" nature of social network investments. Substantial differences are found among the 15 mutually exclusive life cycle stage groups that follow age graded stages and they also include groups of persons that may have experienced major turning points or disability events.