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One interesting phenomenon that emerges from the typical structure of socialnetworks is the friendship paradox. It states that your friends have on averagemore friends than you do. Recent efforts have explored variations of it, withnumerous implications for the dynamics of social networks. However, thefriendship paradox and its variations consider only the topological structureof the networks and neglect many other characteristics that are correlated withnode degree. In this article, we take the case of scientific collaborations toinvestigate whether a similar paradox also arises in terms of a researcher'sscientific productivity as measured by her H-index. The H-index is a widelyused metric in academia to capture both the quality and the quantity of aresearcher's scientific output. It is likely that a researcher may use hercoauthors' H-indexes as a way to infer whether her own H-index is adequate inher research area. Nevertheless, in this article, we show that the averageH-index of a researcher's coauthors is usually higher than her own H-index. Wepresent empirical evidence of this paradox and discuss some of its potentialconsequences.

The H-index Paradox: Your Coauthors Have a Higher H-index than You Do