Dear List,
When computing PPMs as explained in Penny and Ridgway 2013 and if I
don't want to compare models, instead I want to look at the effect of
only one contrast, how do I interpret the computed PPM? In other words,
if I take one contrast from the first level (which may be a comparison
between two conditions) across subjects and plug it into the 2nd level
Bayesian estimation to compute an F-contrast, what is the interpretation?
Or is it wiser to take each contrast individually and use an F-test at
the second level to compute the difference?
Regards,
Glad
--
Paul Glad Mihai, PhD
Independent Research Group "Neural Mechanisms of Human Communication"
Max Planck Institute for Human Cognitive and Brain Sciences
Stephanstraße 1A, 04103 Leipzig, Germany
Phone: +49 (0) 341-9940-2478
E-mail: [log in to unmask]
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