Monday, June 29, 2015

How many levels of independent variables were studied in the article"Cognitive costs of exposure to racial prejudice"by Salvatore and Shelton.

j01


Anova is a tough one to
get your head round-we had to do them manually when I did my first degree so you get to
grips with them better.  Interpreting them past a 2* 2 design gets iffy and interactions
can only really be interpereted using output plots--unless your a
math-head.


An independant variable is the one the
experimenter manipulates (even if there is no real manipulation--eg quasi experiments,
one class group compared to another).  The dependant variable is what is measured--it
depends upon the independent variables.


The way this study
is described does lack a bit of clarity but lets have a
go.


In the manipylation check, the IV for the t test was
the manipulated factor--qualifications, DV evaluation of
candidate.


Next to see if race had an impact (IV=race_ 2
levels) on evaluation of employabity (DV) or evaluation of qualifications
(DV)


Finally the tough one


the
DV was Stroop scores so the IVs that impacted on them
were:


2 levels (subject’s race) *  2 levels (evaluator’s
race)*3 levels (prejudice condition)


As I said a clearer
description in the paper would have helped


Hope this
helps


Silverstrummer

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