| 執筆者 | 古村 聖 (名古屋大学)／小川 光 (名古屋大学) |
|---|---|
| 発行日/NO. | 2015年5月 15-E-062 |
| 研究プロジェクト | 少子高齢化における家庭および家庭を取り巻く社会に関する経済分析 |
| ダウンロード/関連リンク |
概要
本研究では、公共財の自発的供給モデルに基づき、成人した兄弟の居住地選択と親の介護分担を分析するモデルを構築した。先行研究では考慮されなかった所得効果を取り入れることで、現実に観察される兄弟による介護の3つのパターン（（1）兄のみが介護を担当するケース、（2）弟のみが介護を担当するケース、（3）兄弟がともに介護に参加するケース）が兄弟間の所得格差によって表現できることを明らかにした。さらに比較静学の結果、かりに兄弟の総所得が増えたとしても、親が子どもから受ける介護の総量は減少する可能性があることを示している。
概要（英語）
Previous studies have shown that the older sibling often chooses to live away from his elderly parents with the aim of free-riding on the care provided by the younger sibling. In the presented model, we incorporate income effects to depict the alternative pattern frequently observed in Eastern countries, namely that the older sibling lives near his or her parents and cares for them in old age. By generalizing the existing model, we show the three cases of the elderly parents being looked after by (1) the older sibling, (2) the younger sibling, and (3) both siblings, in accordance with the relative magnitude of the income effect and the strategic incentive for one sibling to free-ride on the other. Our study also investigates the effect of changes in relative incomes on the level of total care received by their parents. We find that the overall care provided by both children increases as their aggregate income rises, but that at some point, this may be reduced because of the incentive to free-ride.
Published: Komura, Mizuki, and Hikaru Ogawa, 2016. "The prodigal son: Does the younger brother always care for his parents in old age?" Applied Economics Vol. 49(22), pp. 2153-2165
http://www.tandfonline.com/doi/full/10.1080/00036846.2016.1234697
