人的資本が減価する要因については, 前述の加齢・傷病による消耗 (wear)や, 技術進歩による陳腐化などが指摘されている(De Grip and Van Loo, 2002)｡
De Grip, A. and J. Van Loo (2002) ?The Economics of Skills
Obsolescence: A Review," De Grip, A., J. Van Loo, and K.
Mayhew eds. The Economics of Skilles Obsolescence: Theoretical Innovations and Emripcial Applications, Elsevier, pp. 1-26.
Neuman, S. and A. Weiss (1995) ?On The Effect of Schooling
Vintage on Experience-earnings Profiles: Theory and
Evidence," European Economic Review, 39, pp. 943-945
Ramirez, J. V. (2002) ?Age and Schooling Vintage Effects
on Earnings Profiles in Switzerland," A. De Grip, J. Van
Loo, and K. Mayhew eds. The Economics of Skilles Obsolescence: Theoretical Innovations and Emripcial Applications, Elsevier, pp. 83-99
