Re: [Pebl-list] Flanker Task

[Shane M. <smu...@ob...>]

Martha,

I'm not sure if anyone has published data using the PEBL flanker task
previously. You might be the first.  I modeled it roughly after the Stins
2007 paper:

## John F. Stins, Tinca J. C. Polderman, Dorret I. Boomsma and Eco
## J. C. de Geus (2007). "Conditional accuracy in response
## interference tasks: Evidence from the Eriksen flanker task and the
## spatial conflict task". Advances in Cognitive Psychology 3 (3):
## 389–396. http://www.ac-psych.org/download.php?id=63.


I would start with that paper to see what DVs they reported.  Also, you
might look at Eriksen, 1979:

##  see Eriksen, C. W., & Schultz, D. W. (1979). "Information processing in
##  visual search: A continuous flow conception and experimental
##  results". Perception & Psychophysics 25 (4): 249–263. PMID 461085

Best,

Shane


> Hi All,
>
> I was wondering if anyone had some help or advice for scoring the PEBL
> Flanker task.
>
> How should the flanker effect be computed for each participant?
>
> I see the difference between average choice reaction times for congruent
> and incongruent trials listed as Conflict Cost. How do I factor in the
> accuracy? Should I also look at the differences in accuracy between
> congruent and incongruent trials?
>
> I've seen people refer to a combined weighted RT and I'm guessing that's
> the figure I need to input into my data file.
>
> Would that be the conflict cost divided by mean accuracy?
>
> Or do I need to divide conflict cost by the difference in accuracy between
> congruent and congruent trials?
>
> I hope this isn't the wrong place to ask this. I'm just assuming that
> there
> should be one figure to describe the flanker effect and I'm not sure if I
> should only focus on choice reaction time using the conflict cost number.
>
> I'm currently working on undergraduate research and specifically looking
> at
> ego depletion; diminished cognitive control should also adversely affect
> accuracy so I was hoping to factor that in too.
>
> Any advice anyone has would be greatly appreciated!
>
> Best,
>
> Martha Clark
> ------------------------------------------------------------------------------
> See everything from the browser to the database with AppDynamics
> Get end-to-end visibility with application monitoring from AppDynamics
> Isolate bottlenecks and diagnose root cause in seconds.
> Start your free trial of AppDynamics Pro today!
> http://pubads.g.doubleclick.net/gampad/clk?id=48808831&iu=/4140/ostg.clktrk_______________________________________________
> Pebl-list mailing list
> Peb...@li...
> https://lists.sourceforge.net/lists/listinfo/pebl-list
>