Penuaan

Penuaan (Inggris:Aging) yaitu hasil akumulasi dari perubahan organisme atau objek karena waktu. Penuaan pada manusia berkaitan dengan ronde multidimensional fisik, psikologis dan perubahan sosial. Umur merupakan ukuran secara kronologis, dan ulang tahun seseorang merupakan hal yang penting dalam persoalan "penuaan".

Referensi

• Bass, S.A. (2006). Gerontological Theory: The Search for the Holy Grail. The Gerontologist, 46, 139-144.
• Bath, P.A. (2003). Differences between older men and woman in the Self-Rated Health/ Mortality Relationship. The Gerontologist, 43 387-94
• Charles, S.T.; Reynolds, C.A.; Gatz, M. (2001). "Age-related differences and change in positive and negative affect over 23 years". Journal of Personality and Social Psychology 80 (1): 136–151. doi:10.1037/0022-3514.80.1.136. PMID 11195886. 
• Mather, M.; Carstensen, L. L. (2005). "Ageing and motivated cognition: The positivity effect in attention and memory". Trends in Cognitive Sciences 9 (10): 496–502. doi:10.1016/j.tics.2005.08.005. PMID 16154382. 
• Masoro E.J. & Austad S.N... (eds.): Handbook of the Biology of Ageing, Sixth Edition. Academic Press. San Diego, CA, USA, 2006. ISBN 0-12-088387-2
• Moody, Harry R. Ageing: Concepts and Controversies. 5th ed. California: Pine Forge Press, 2006.
• Zacks, R.T., Hasher, L., & Li, K.Z.H. (2000). Human memory. In F.I.M. Craik & T.A. Salthouse (Eds.), The Handbook of Ageing and Cognition (pp. 293–357). Mahwah, NJ: Erlbaum.
• A small-cell lung cancer genome with complex signatures of tobacco exposure Nature 463, 184-190 (14 January 2010)