I concur. It doesn't make sense as it stands.
Was one of the factors between subjects and one within subjects?
If that is so, the df for the interaction effect would be more than for the
between subjects factor.
Assuming the the 2 level factor was a between subjects factor, subjects would
be assigned to one of 2 treatments but measured under 3 conditions or times.
Lise DeShea wrote:
> List Members:
>
> I teach statistics and experimental design at the University of Kentucky,
> and I give journal articles to my students occasionally with instructions
> to identify what kind of research was conducted, what the independent and
> dependent variables were, etc. For my advanced class, I ask them to
> identify anything that the researcher did incorrectly.
>
> As an example, there was an article in a recent issue of an APA journal
> where the researchers randomly assigned participants to one of six
> conditions in a 2x3 factorial design. The N wouldn't allow equal cell
> sizes, and the reported df exceeded N. Yet the article said the
> researchers ran a two-way fixed-effects ANOVA.
>
> One of my students wrote on her homework, "It is especially hard to know
> when you are doing something wrong when journals allow bad examples of
> research to be published on a regular basis."
>
> I'd like to hear what other list members think about this problem and
> whether there are solutions that would not alienate journal editors. (As a
> relative new assistant professor, I can't do that or I'll never get
> published, I'll be denied tenure, and I'll have to go out on the street
> corners with a sign that says, "Will Analyze Data For Food.")
>
> Cheers.
> Lise
> ~~~
> Lise DeShea, Ph.D.
> Assistant Professor
> Educational and Counseling Psychology Department
> University of Kentucky
> 245 Dickey Hall
> Lexington KY 40506
> Email: [EMAIL PROTECTED]
> Phone: (859) 257-9884
>
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