[Jdm-society] replications

[David Budescu]

Robyn

I think a more accurate statement is not that "they get it 
right" (which is rather vague and subjective), but rather
that "they identify with satisfactory confidence those situations
(including boundary cases) where the phenomenon is obtained)".

In my opinon  replications matter because not only because they 
can help dismiss chance results that are published (these false 5% 
rejections of the null), but also because they can help delineate the 
relevant parameter (broadly defined) space:

For example -- what are the boundaries of loss aversion, overweighting 
of low probability events, self enhancement judgments, underestimation 
of high probabilities. etc.

David

On Mon, 7 May 2007, Robyn Dawes wrote:

> Irwin,  What the "real" scientists do is to futch around until they get i
> "right."  The multiple study requirement just adds "first and second and
> third" studies, thereby wasting space and time.
>
> Robyn
>
>
> On 5/5/07 1:59 PM, "irwin-levin at uiowa.edu" <irwin-levin at uiowa.edu> wrote:
>
>> Hi.
>> I think this dialog is a great example of how we can use the SJDM list
>> to address an issue that affects virtually all of us.
>> A couple minor points to add:
>>   1. A "failure to replicate" may sometimes be caused by going too far
>> beyond the original operational definitions and boundary conditions.
>> The Levin, Schneider & Gaeth '98 OBHDP paper, "All frames are not
>> created equal" was all about that.
>>   2. A number of major journals call for multiple experiments in one
>> paper. I think that this can sometimes go too far by delaying
>> publication of provocative results, but it does relate to the current
>> issue in that the latter experiments in a series are often part
>> replication and part extension of the earlier experiments.
>> Irwin
>>

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|	David V. Budescu					|
|	Department of Psychology, University of Illinois	|
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