Departmental Bulletin Paper 日本の高齢者と子供との同居についての横断面分析

中村, さやか  ,  丸山, 士行  ,  NAKAMURA, Sayaka  ,  MARUYAMA, Shiko

65 ( 1 )  , pp.13 - 28 , 2017-06-30 , 名古屋大学大学院経済学研究科
Johar et al. (2015) studied the determinants of elderly parents and their children's transitions to coresidence using Japanese panel data, and some of their findings greatly differ from those of existing Japanese cross-sectional studies. Using the same data as Johar et al., we conduct a static crosssectional analysis on the coresidence of elderly parents and their children and compare the results with previous findings. Our results are highly consistent with prior cross-sectional studies but differ from Johar et al.'s in several crucial respects. In particular, parental health limitations and non-house wealth are strong predictors of transition to coresidence in Johar et al. but are negatively associated with coresidence in our cross-sectional analysis. Possible explanations for these differences include reverse causality from co residence to parental health and to asset formation in the cross-sectional analysis as well as the differences betvveen "lifelong" coresidence, where children live with their parents from birth, and "boomerang" coresidence, where children leave the parental home and start living with their parents in adulthood. Transition analysis can distinguish betv,een these two types of coresidence and focus on the latter, but cross-sectional analysis cannot. Future studies on living arrangements for the elderly should consider these limitations of cross-sectional studies.

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