Illustrating Income Mobility: Two New Measures*

John Creedy and Norman Gemmell

No 20282, Working Paper Series from Victoria University of Wellington, Chair in Public Finance

Abstract: Jenkins and Lambert (1997) demonstrated that a number of measures of poverty could be combined and compared using the "Three Is of Poverty" (TIP) curve; the ‘three Is’ being the incidence, intensity and inequality of poverty. This paper takes the insights from the TIP curve and applies them to income growth based measures of mobility, proposing a "Three Is of Mobility", or TIM, curve. Similar analysis is then applied to re-ranking measures of mobility to yield a re-ranking ratio (RRR) curve. Illustrations are provided using income data from random samples of New Zealand income taxpayers over the period 1998 to 2010. It is argued that both curves represent simple graphical devices that nevertheless conveniently illustrate the "Three Is" properties of income mobility.

Keywords: Income mobility; TIP curve; New Zealand; TIM curve (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
https://ir.wgtn.ac.nz/handle/123456789/20282

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:vuw:vuwcpf:20282

Access Statistics for this paper

More papers in Working Paper Series from Victoria University of Wellington, Chair in Public Finance School of Accounting & Commercial Law, Victoria University of Wellington, PO Box 600, Wellington, New Zealand. Contact information at EDIRC.
Bibliographic data for series maintained by Library Technology Services ().