Ethics and Sample Size Planning

Authored by: Scott E. Maxwell , Ken Kelley

Handbook of Ethics in Quantitative Methodology

Print publication date:  January  2011
Online publication date:  March  2011

Print ISBN: 9781848728547
eBook ISBN: 9780203840023
Adobe ISBN: 9781136888731

10.4324/9780203840023.ch6

 Download Chapter

 

Abstract

Most psychological researchers realize at least one way in which sample size planning is important. Namely, if their study fails to have sufficient statistical power, they run an increased risk of not being able to publish their work. Despite this awareness, literature reviews usually show that underpowered studies persist. In fact, underpowered studies permeate the literature not only in psychology (e.g., Bezeau & Graves, 2001; Clark-Carter, 1997; Kosciulek & Szymanski, 1993; Mone, Mueller, & Mauland, 1996; Rossi, 1990; Sedlmeier & Gigerenzer, 1989) but in other disciplines as well. For example, recent reviews in such areas of medicine as head injury (Dickinson, Bunn, Wentz, Edwards, & Roberts, 2000), orthopedics (Freedman & Bernstein, 1999), rheumatology (Keen, Pile, & Hill, 2005), stroke (Weaver, Leonardi-Bee, Bath-Hextall, & Bath, 2004), and surgery (Maggard, O’Connell, Liu, Etzioni, & Ko, 2003) show frequent instances of inadequate statistical power.

 Cite
Search for more...
Back to top

Use of cookies on this website

We use cookies, see our privacy and cookies policy for more information. If you are okay with cookies click below or continue to browse.