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I am doing a research in a field of psychology and I would like to do almost the same research (just with different groups) as one other published research. I can make similar research but actually I want to compare my results with already existing ones.

The thing is, that researchers made one simple application, more like a game. In their article they put a link for that game but if I want to use their game in my research I need to have theirs other application for recording each test session. I know for sure that I will ask them to use one part of application but if it's rational, I would like to ask them and use the whole game and the other application for the data collecting.

I know that this is more individual question, but I would like to know what is the common practice in computer science. Do people usually/ rarely ask someones applications/ programs for they own research? Unfortunately, I don't have a time to collaborate with someone in computer science to make other similar game. And even if I had a time I wouldn't be able to exactly compare the results with that published research which I would like to do. Anyway, I don't know the researchers but I thought to send them an e-mail to ask them.

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I am a researcher in the computer science field, and I'd say it's not unusual to ask authors of published papers for their code/applications. Sometimes, however, people might be reluctant to give you the software, because research code is often unstable and badly documented, and they might be ashamed (or worried that you will find bugs that could invalidate their previous publications!).

You should surely contact the authors, explain the situation, and stress that you are (of course) going to cite their paper. There's no harm in asking. In my experience, the worst-case scenarios are: a) they will not reply; b) they will reply, and ask you to be included among the authors of your future paper, in exchange for the software.

You could try to prepare for these two outcomes, while hoping for a positive answer :-)

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    Don't forget the best case scenario that I have had happen to me multiple times, even while working in industry: They are flattered and more than happy to provide you the code, application, help you get it running and thankful for the feedback and potential bug reports you might be able to offer. – skymningen Mar 31 '16 at 7:59
  • Of course, you are right! But then again, you don't have to worry about the best-case scenario ;-) – Alberto Apr 1 '16 at 9:25
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Yes, you should go ahead with that. It's exactly rational and wise, even from CS research point of view. Just ask the author in the best possible way.

Otherwise, even if you successfully manage to collaborate with someone in CS and compare the results too, for doing the exactly same thing, your research contribution would be zero. So, why should one reinvent the wheel?

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