On Mon, Sep 10, 2012 at 11:04 AM, Guido Biele <g.p.bi...@psykologi.uio.no>wrote:
> In your response you mention using a hybrid. I agree with the approach,You are right, in fact it's accuracy (upper is correct) and stimulus (upper
> even if I don't understand why you call it stimulus-coding, because 1 is
> always associated with the correct response, and not always with "left
> response" or always with "right response".*
is left/right, depending on condition) coding simultaneously.
More generally, when the data are from a task where correct and incorrect
> responses can be determined, I think one should always use accuracy coding,Agreed. I suppose I haven't thought too much about these issues because in
> so that one can estimate the difficulty of a condition (or capability of a
> participant/group). I am not sure what the meaning of the drift rate would
> be if the data were stimulus/direction-coded.
our tasks there is no reason to assume a bias so I always use accuracy
It does seems as if the hybrid should always be preferred over pure
> Cheers - Guido
> *c.f. your documentation: "There are two ways you can code subject
> On Mon Sep 10 15:23:34 2012, Thomas Wiecki wrote:
> I couldn't find those passages:
> From White: "position of starting point relative to the boundaries (values
> From McKoon where they introduce response bias in exp 3: "Because the
> You could use a hybrid (I think they do this in the last experiment
> In left correct you could code left to represent the upper boundary
> I think it is helpful to think about this in terms of which boundary
> first thanks for publishing a new, improved version oh hddm!
> the hddm manual suggests that one should not accuracy-code ata
> Ratcliff and McKoon (2008) examine if prior probability influences
> Cheers - guido
> * see
> page 42, section 4.1
> Guido Biele
> Visiting Address
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