Author is the one who has made a substantive intellectual contribution to a paper (for example, to the research question, design, analysis, interpretation, and written description) and also understands his/her role in taking responsibility and being accountable for what is published.
Authorship is a way of making explicit both credit and responsibility for the contents of published articles. Credit and responsibility are inseparable. The guiding principle for authorship decisions is to present an honest account of what took place. Criteria for authorship apply to all intellectual products, including print and electronic publications of words, data, and images. Journals should make their policies on authorship transparent and accessible (https://wame.org/authorship
Authorship has important academic, social, and financial consequences which implies responsibility and accountability for the published work. Since authorship does not normally communicate what contributions make an individual qualified to be an author. Editors are strongly encouraged to develop and implement a contributorship policy, as well as a policy that identifies who is responsible for the integrity of the work as a whole. Such policies remove much of the ambiguity surrounding contributions but leave unresolved the question of the quantity and quality of contribution that qualify an individual for authorship. Rovedar has thus developed criteria for authorship that can be used by Rovedar journals, including those that distinguish authors from other contributors.