R help - Mar 2008 - Re action Time and Time Series Analysis

Dear,
I need to analyse reaction time.

The general idea might be described as this: There are 8x8 circles. My
program light a circle at one time. The subject then click the lighted
circled as fast as possible. After the correct circle is clicked, then the
next circle will be lighted for the subject to click on, and so on.

My questions are:
1. May I use Time Series Analysis? I read that Time Series may be used only
for data with regular measurement interval. Can my experiment be considered
as regularly measured?


Let's assume there are 30 subjects. Each has 330 measured reaction time. I
then plot the response time as time series.
2. I need to know if the plots can be classified to groups with different
characteristic. That is, I want to check whether there is model (or models)
my plots follow. I've read about ARIMA or somekind of model fitting but have
no idea about the general concept. Would someone give me some insight?? How
to do that with R-Language?


Just for additional request, might I know some paper that use time series
for analyzing reaction time? I've searched with Google for nearly 2 hours
but most of the paper I'm looking for are not free. I would appreciate if I
could get real case study.

Thank you for the help.

regards,
Nathanael Gratias
indonesia
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Nathanael,

On 7 Mar 2008, at 09:40, nathan3073 wrote:
>
> Dear,
> I need to analyse reaction time.
>
> The general idea might be described as this: There are 8x8 circles. My
> program light a circle at one time. The subject then click the lighted
> circled as fast as possible. After the correct circle is clicked,  
> then the
> next circle will be lighted for the subject to click on, and so on.
>
> My questions are:
> 1. May I use Time Series Analysis? I read that Time Series may be  
> used only
> for data with regular measurement interval. Can my experiment be  
> considered
> as regularly measured?
Is the precise timing of new responses expected to influence the RTs?  
If so, the answer
is probably no.
> Let's assume there are 30 subjects. Each has 330 measured reaction  
> time. I
> then plot the response time as time series.
> 2. I need to know if the plots can be classified to groups with  
> different
> characteristic.
This sounds like you need some kind of cluster or mixture analysis,  
however ....
> That is, I want to check whether there is model (or models)
> my plots follow. I've read about ARIMA or somekind of model fitting  
> but have
> no idea about the general concept. Would someone give me some  
> insight?? How
> to do that with R-Language?
... whether you can do this depends on your specific hypotheses.

Possibly a simple linear model answers most of your questions.

Best, Ingmar
> Just for additional request, might I know some paper that use time  
> series
> for analyzing reaction time? I've searched with Google for nearly 2  
> hours
> but most of the paper I'm looking for are not free. I would  
> appreciate if I
> could get real case study.
>
> Thank you for the help.
>
> regards,
> Nathanael Gratias
> indonesia
> -- 
> View this message in context: http://www.nabble.com/Reaction-Time- 
> and-Time-Series-Analysis-tp15891094p15891094.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting- 
> guide.html
> and provide commented, minimal, self-contained, reproducible code.
Ingmar Visser
Department of Psychology, University of Amsterdam
Roetersstraat 15
1018 WB Amsterdam
The Netherlands
t: +31-20-5256723



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