If you know what parameter settings you need in order to show the effect, then, 
sure, no need to pilot.

But I know in attention and depth perception research (the two areas I'm most 
familiar with), it's rare to run a study without having to play with any 
parameters.  You don't start sloppy -- you set things up according to what the 
literature and your hypotheses tell you, and you exercise control as you would 
with any research.

I always felt that pilot work wasn't wasted, but taught me about what the 
source of the effect was.  You go in with an idea that something should do 
something, but you have to play with it a while to figure it out.  Calling it 
"pilot research" sort of demeans it -- it's really empirical research.

But I sure never thought of it as a waste.  That's how I learned what was doing 
what.

m


--
Marc Carter, PhD
Associate Professor and Chair
Department of Psychology
College of Arts & Sciences
Baker University
--



________________________________
From: Pollak, Edward [mailto:[email protected]]
Sent: Wednesday, May 12, 2010 9:24 AM
To: Teaching in the Psychological Sciences (TIPS)
Subject: [tips] FW: Whatever happened to pilot studies?




My thesis adviser taught me "never run a pilot study."  His point was that you 
should start to do every study as clean & neat as possible and assume that it 
will "work." Certainly, many of these studies will turn into pilot studies when 
problems crop up but to start out assuming it's a pilot study is just wasting 
time & energy. There is, IMO, a fair amount of wisdom in this approach.

Ed

Edward I. Pollak, Ph.D.
Department of Psychology
West Chester University of Pennsylvania
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Husband, father, grandfather, biopsychologist, & bluegrass fiddler...... in 
approximate order of importance.


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