Abstract
Summary : Mobility and urban space. In a longitudinal field study of the relation between mobility and residential environment, the author collected information from subjects before and after they moved from Paris to a new town called Marne-la-Vallée. The difficulty encountered was of separating the influence of residential modification (main variable) from that of some individual changes which occurred simultaneously (concurrent variables). To solve this problem, the author used subjects who had come to Marne-la- Vallée two years before as a control group. By comparing the two samples, he was able to identity what were the concurrent variables which actually played a part in the evolution of mobility and describe how they interfere with the main variable. The author shows that the increase in number of children is to be taken into account to reduce the ambiguous relation between mobility and residential change. This concurrent variable reinforces the effect of the main variable in working days but, in leisure days, interacts with it in a complex way. Key words : longitudinal study of mobility, ambiguous relation, concurrent variables.
Published Version
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