On the Accuracy of Different Measures of Q

Timothy Erickson and Toni Whited

Financial Management, 2006, vol. 35, issue 3

Abstract: Tobin’s q is widely accepted as proxy for an underlying “true” q, which is assumed to characterize a firm’s incentive to invest. Researchers have developed numerous methods for computing q. This article assesses the measurement quality of different proxies for q. We adapt the measurement-error consistent estimators in Erickson and Whited (2002) to estimate the extent to which variation in true unobservable q explains variation in different proxies for q. We find most proxies for q are poor: careful algorithms for calculating q do little to improve measurement quality. Using elaborate algorithms, however, depletes the number of usable observations and possibly introduces sample selection bias.

Date: 2006
References: Add references at CitEc
Citations: View citations in EconPapers (37)

There are no downloads for this item, see the EconPapers FAQ for hints about obtaining it.

Related works:
Journal Article: On the Accuracy of Different Measures of q (2006)
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:fma:fmanag:ericksonwhited06

Access Statistics for this article

Financial Management is currently edited by Bill Christie

More articles in Financial Management from Financial Management Association University of South Florida 4202 E. Fowler Ave. COBA #3331 Tampa, FL 33620. Contact information at EDIRC.
Bibliographic data for series maintained by Courtney Connors ( this e-mail address is bad, please contact ).