Intergenerational equity in economic, psychological, and sociological contexts, is the concept or idea of fairness or justice in relationships between children, youth, adults and seniors, particularly in terms of treatment and interactions. It has been studied in environmental and sociological settings.
Economics usage 
Investment management 
In the context of institutional investment management, intergenerational equity is the principle that an endowed institution's spending rate must not exceed its after-inflation rate of compound return, so that investment gains are spent equally on current and future constituents of the endowed assets. This concept was originally set out in 1974 by economist James Tobin, who wrote that, "The trustees of endowed institutions are the guardians of the future against the claims of the present. Their task in managing the endowment is to preserve equity among generations." in terms of an economical context. Intergenerational equity refers to relationship that a particular family has on resources. An example is the forest-dwelling civilians in Papua New Guinea, who for generations have lived in a certain part of the forest and thus becomes their land. The adult population sell the trees for palm oil to make money. If they do so at an unsustainable level there will be no resources for their children or grandchildren in the future. The unsustainable use of resources would then lead to Intergenerational inequity.
U.S. national debt 
One debate about the national debt relates to intergenerational equity. For example, if one generation is receiving the benefit of government programs or employment enabled by deficit spending and debt accumulation, to what extent does the resulting higher debt impose risks and costs on future generations? There are several factors to consider:
- For every dollar of debt held by the public, there is a government obligation (generally marketable Treasury securities) counted as an asset by investors. Future generations benefit to the extent these assets are passed on to them, which by definition must correspond to the level of debt passed on.
- As of 2010, approximately 72% of the financial assets were held by the wealthiest 5% of the population. This presents a wealth and income distribution question, as only a fraction of the people in future generations will receive principal or interest from investments related to the debt incurred today.
- To the extent the U.S. debt is owed to foreign investors (approximately half the "debt held by the public" during 2012), principal and interest are not directly received by U.S. heirs.
- Higher debt levels imply higher interest payments, which create costs for future taxpayers (e.g., higher taxes, lower government benefits, higher inflation, or increased risk of fiscal crisis).
- To the extent the borrowed funds are invested today to improve the long-term productivity of the economy and its workers, such as via useful infrastructure projects, future generations may benefit.
- For every dollar of intragovernmental debt, there is an obligation to specific program recipients, generally non-marketable securities such as those held in the Social Security Trust Fund. Adjustments that reduce future deficits in these programs may also apply costs to future generations, via higher taxes or lower program spending.
Economist Paul Krugman wrote in March 2013 that by neglecting public investment and failing to create jobs, we are doing far more harm to future generations than merely passing along debt: "Fiscal policy is, indeed, a moral issue, and we should be ashamed of what we’re doing to the next generation’s economic prospects. But our sin involves investing too little, not borrowing too much." Young workers face high unemployment and studies have shown their income may lag throughout their careers as a result. Teacher jobs have been cut, which could affect the quality of education and competitiveness of younger Americans.
Environmentalism usage 
|Pollution control and remediation|
|Resource conservation and management|
|Planning, land use, and infrastructure|
Conversations about intergenerational equity occur across several fields. They include transition economics, social policy, and government budget-making. Intergenerational equity is also explored in environmental concerns, including sustainable development, global warming and climate change.
Social justice usage 
Conversations about intergenerational equity are also relevant to social justice arenas as well, where issues such as health care are equal in importance to youth rights and youth voice are pressing and urgent. There is a strong interest within the legal community towards the application of intergenerational equity in law.
See also 
- Environmental ethics
- Evolving Capacities
- Generational accounting
- Justice (economics)
- Transgenerational design
- Youth/Adult Partnerships
- Youth rights
- Inter-generational contract
- Foot, D. & Venne, R. (2005) "Awakening to the Intergenerational Equity Debate in Canada." Journal of Canadian Studies.
- Tobin, James. (1974) "What is Permanent Endowment Income?"
- NYT-Paul Krugman-Debt is Mostly Money We Owe Ourselves-December 2011
- Professor G. William Domhoff-Who Rules America?-Sociology Department-University of California Santa Cruz-Retrieved March 2013
- NYT-Paul Krugman-Debt is Mostly Money We Owe Ourselves-December 2011
- Huntley, Jonathan (July 27, 2010). "Federal debt and the risk of a fiscal crisis". Congressional Budget Office: Macroeconomic Analysis Division. Retrieved February 2, 2011.
- Dean Baker-Center for Economic and Policy Research-David Brooks is Projecting His Self Indulgence Again-December 2011
- NYT-Paul Krugman-Cheating our Children-March 2013
- (n.d.) EPE Values: Intergenerational Ethics Earth and Peace Education Associates International website.
- (2005) "Economics of Intergenerational Equity in Transition Economies" 10-11 March 2005.
- Thompson, J. (2003) Research Paper no. 7 2002-03 Intergenerational Equity: Issues of Principle in the Allocation of Social Resources Between this Generation and the Next. Social Policy Group for the Parliament of Australia.
- Gosseries, A. (2008) “Theories of intergenerational justice: a synopsis”. S.A.P.I.EN.S. 1 (1)
- (2005) Understanding Sustainable Development Cambridge University Press.
- Williams, A. (1997) "Intergenerational equity: An exploration of the 'fair innings' argument." Health Economics. 6(2):117-32.
- O'Brein, M. (n.d.) Not, 'Is it Irreparable?' But, 'Is it Unnecessary?' Thoughts on a Practical Limit for Intergenerational Equity Suits. Eugene, OR: Constitutional Law Foundation.
Further reading 
- Bishop, R (1978) "Endangered Species and Uncertainty: The Economics of a Safe Minimum Standard", American Journal of Agricultural Economics, 60 p10-18.
- Brown-Weiss, E (1989) In Fairness to Future Generations: International Law, Common Patrimony and Intergenerational Equity. Dobbs Ferry, NY: Transitional Publishers, Inc., for the United Nations University, Tokyo.
- Daly, H. (1977) Steady State Economics: The Economics of Biophysiscal Equilibrium and Moral Growth. San Francisco: W. H. Freeman and Co.
- Frischmann, B. (2005) "Some Thoughts on Shortsightedness and Intergenerational Equity", Loyola University Chicago Law Journal, 36.
- Goldberg, M (1989) On Systemic Balance: Flexibility and Stability In Social, Economic, and Environmental Systems. New York: Praeger.
- Howarth, R. & Norgaard, R.B. (1990) "Intergenerational Resource Rights, Efficiency, and Social Optimality", Land Economics, 66(1) p1-11.
- Laslett, P. & Fishkin, J. (1992) Justice Between Age Groups and Generations. New Haven, CT: Yale University Press.
- Portney, P. & Weyant, J. P. (1999) Discounting and Intergenerational Equity. Washington, DC: Resources for the Future Press.
- McLean, D. "Intergenerational Equity" in White, J. (Ed) (1999) Clobal Climate Change: Linking Energy, Environment, Economy, and Equity. Plenum Press.
- Sikora, R.I. & Barry, B. (1978) Obligations to Future Generations. Philadelphia, PA: Temple University Press.
- Tabellini, G. (1991) "The Politics of Intergenerational Redistribution", Journal of Political Economy, 99(2) p335-358.
- Thompson, Dennis F. (2011) “Representing Future Generations: Political Presentism and Democratic Trusteeship,” in Democracy, Equality, and Justice, eds. Matt Matravers and Lukas Meyer, pp. 17-37. ISBN: 978-0-415-59292-5
- Wiess-Brown, Margaret. "Chapter 12. Intergenerational equity: a legal framework for global environmental change" in Wiess-Brown, M. (1992) Environmental change and international law: New challenges and dimensions. United Nations University Press.
- Willetts, D. (2010). The pinch: How the baby boomers took their children's future and why they should give it back. London: Atlantic Books.