This paper aims to review the fiercely discussed question of whether the ranking of Wikipedia articles in search engines is justified by the quality of the articles. After an overview of current research on information quality in Wikipedia, a summary of the extended discussion on the quality of encyclopedic entries in general is given. On this basis, a heuristic method for evaluating Wikipedia entries is developed and applied to Wikipedia articles that scored highly in a search engine retrieval effectiveness test and compared with the relevance judgment of jurors. The quality discussion regarding Wikipedia-not only in the mainstream media-is, as Prillinger's statement illustrates, very much focused on aspects of correctness in form and content (Giles, 2005). This narrowing of the quality debate does not meet the requirements of the complex discussion on lexicographical quality in general. In this discussion, correctness is just one facet in a set of criteria. In this article we shed new light on the question of lexicographic quality as our pragmatic research question is whether the overall quality of the retrieved articles, correctness included, justifies its ranking, or, in other words, is the ranking of the articles appropriate to their usefulness for the user of the search engine? Our research is also to be seen in the larger context of adding transparency to the question of how search engines deal with Wikipedia entries. Encyclopedias are generally recommended as a starting point for information research. Does the ranking in Wikipedia articles do this view justice?To provide some contextual background we summarize briefly the current research on information quality in Wikipedia as well as the extended discussion on the quality of encyclopedic entries in general. On this basis, we develop our own heuristic method for evaluating Wikipedia entries.

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In der Zeit vom 05.03.2020 bis zum 15.03.2020 haben die Autor*innen einen Train-the-Trainer-Workshop zu Methoden der Usability-Evaluation (Schwerpunkt Usability-Testing) für Mitarbeiter*innen eines äthiopischen IT-Beratungsunternehmens in Addis Abeba organisiert und durchgeführt. Im Beitrag werden das didaktische und inhaltliche Konzept und der Ablauf des Workshops vorgestellt. Die Erfahrungen werden anhand der drei User Experience Prozessschritte “anticipated use”, “effectice and efficient handling of task” und "processing of usage” reflektiert.

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