The average number of authors listed on contributions to scientific journals has increased considerably over time. While this may be accounted for by the increased complexity of much research and a corresponding need for extended collaboration, several studies suggest that the prevalence of non-deserving authors on research papers is alarming. In this paper a combined qualitative and quantitative approach is suggested to reduce the number of undeserving authors on academic papers: 1) ask scholars who apply for positions to explain the basics of a random selection of their co-authored papers, and 2) in bibliometric measurements, divide publications and citations by the number of authors.