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What amount of work should a well compensated research assistant put into a paper before they're included as a co-author? Is there any norm? Suppose this is a field where 1 to 3 authors on any given journal paper is the standard amount (e.g., economics/finance/econometrics).

What if they do 30% of the paper? What if the paper requires (model building, programming, writing), and each component is about 33% of the paper, and the RA does all of one of these and helps a bit with another one of these?

I would think the answer is never, unless it was an unusually large contribution or the professor was feeling nice. I think this because otherwise they would've just gotten an experienced co-author who could bring much more to the table who they also don't have to compensate with any $$.

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Any work done at all towards a project must be acknowledged. No matter how small. Anything otherwise would be wrong. You do have to ask your professor that you wish to be added as a co-author though. – Naresh Dec 18 '12 at 4:58
up vote 52 down vote accepted

The decision of whether someone should be a coauthor is completely independent of monetary compensation: authorship depends on what sort of intellectual contribution each person has made, and it would be unethical to treat them differently based on their job (paid assistant, student, colleague, amateur, etc.).

People in different roles may be treated differently based on their contributions. For example, an assistant who does no creative or insightful work, but instead just carries out explicit instructions in a straightforward way, should generally not be a coauthor. (Still, the assistant should be thanked by name in the acknowledgments.) When the assistant's work starts to involve exercising nontrivial skill and judgment, coauthorship may be appropriate. If the assistant is doing a serious part of the creative intellectual work, then coauthorship is mandatory, even if the supervisor's role is deeper.

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+1 for coauthorship and salary being independent! – JeffE Dec 18 '12 at 5:04

The PI I worked with (field is computational biology) said his requirement for co-authorship is that you need to have given creative input on the paper (i.e. contributed to the design, not just the implementation).

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"but I got the impression that isn't the norm." - does that mean the norm is that even if you do the implementation only, and not contribute to the design, you get to be a co-author? – Solace Oct 19 '15 at 15:50
I've removed that part of the comment. It meant that often research assistants don't get authorship because their contribution is seen as routine lab work. – njbooher Oct 20 '15 at 19:58

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