[ACT-R-users] Question on a specific difference between ACT* and ACT-R

[Dan Bothell]

--On Friday, September 13, 2013 1:19 AM +0200 lionel.marquis at unil.ch wrote:

>
> In later versions (i.e., ACT-R), this parameter p had dropped from the
> equations. What are the (theoretical or empirical) reasons for removing p? Or
> is the idea behind factor p somehow still accounted for, but in a different
> form?
>
>

ACT-R does not have such a parameter because unlike ACT*, it only has one level
of spreading activation.  The reasons for the change from multiple levels of
spreading activation to a single level can be found in "The Adaptive Character
of Thought".

Hope that helps,
Dan
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