how can ACT-R models age?

[Lynne Reder]

"aging effects," it almost certainly is at its maximum in one's youth 
and probably would not start to diminish until a person's mid 20s...

At 11:31 AM +0000 1/11/01, Gary Jones wrote:
>>It seems that if one subscribes to the view that we can "age" models
>>by varying parameters (ignoring issues of changes in qualitative /
>>strategic knowledge), the game is really to identify a parsimonious
>>minimal set of parameters that change and to specify how they change
>>over time.
>
>
>hello Dario,
>
>sorry I'm joining this discussion a bit late in the day, but as 
>Richard has mentioned I have looked at ageing in children. I 
>implemented several developmental mechanisms within an ACT-R model, 
>some of which mapped onto ACT-R parameters. In particular, the one 
>that gave the best results was EGN (this is ACTv3.0). Starting with 
>a model of adults with no noise, and increasing the level of noise 
>(thereby making it more difficult for the model to select the 
>*right* strategy), the model then fit the data of 7yo's quite well. 
>This mechanism (strategy choice efficiency) has been suggested by 
>Siegler in numerous papers. You could look at them or alternatively 
>look at our March 2000 Psychological Science paper.
>
>Gary.