I want to know is it this reaction time can differ in population of different places.
Same place different tweets- or same tweets different places...
Perhaps one way to do so is to construct a sort of tweets atlas, based on the premise that tweets are responses to what people "hear and see". Even having viewed the same media clip, people within the same geographic region can have fairly divergent tweets. One more inspiring presentation I recommend is Deb Roy's (TED) take on Big Data and how real-time visualization and real-time social graph mapping is helping to unravel hidden patterns.
http://firstmonday.org/article/view/4366/3654
http://www.ted.com/talks/deb_roy_the_birth_of_a_word
http://tweetping.net/
Depends on what you mean. We've found consistent differences in saccade latency (the oculomotor reaction time) between Chinese and Caucasian participants. See:
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0094424
or
http://pcwww.liv.ac.uk/~pcknox/index_files/pubs/w&k14ms.pdf
Yes sir there is ethnic variation as prof Knox has mentioned. Besides ethnic difference anatomical & congenental defect will vary reaction time . It will change less in simple reaction time but significantly change in multiple choice reaction time.Thank you pcg,CLI,chennai
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