TY - JOUR A1 - Haklay, Muki A1 - Fraisl, Dilek A1 - Greshake Tzovaras, Bastian A1 - Hecker, Susanne A1 - Gold, Margaret A1 - Hager, Gerid A1 - Ceccaroni, Luigi A1 - Kieslinger, Barbara A1 - Wehn, Uta A1 - Woods, Sasha A1 - Nold, Christian A1 - Balázs, Bálint A1 - Mazzonetto, Marzia A1 - Rüfenacht, Simone A1 - Shanley, Lea A. A1 - Wagenknecht, Katherin A1 - Motion, Alice A1 - Sforzi, Andrea A1 - Riemenschneider, Dorte A1 - Dorler, Daniel A1 - Heigl, Florian A1 - Schaefer, Teresa A1 - Lindner, Ariel A1 - Weißpflug, Maike A1 - Mačiulienė, Monika A1 - Vohland, Katrin T1 - Contours of citizen science: a vignette study JF - Royal Society Open Science N2 - Citizen science has expanded rapidly over the past decades. Yet, defining citizen science and its boundaries remained a challenge, and this is reflected in the literature—for example in the proliferation of typologies and definitions. There is a need for identifying areas of agreement and disagreement within the citizen science practitioners community on what should be considered as citizen science activity. This paper describes the development and results of a survey that examined this issue, through the use of vignettes—short case descriptions that describe an activity, while asking the respondents to rate the activity on a scale from ‘not citizen science’ (0%) to ‘citizen science’ (100%). The survey included 50 vignettes, of which five were developed as clear cases of not-citizen science activities, five as widely accepted citizen science activities and the others addressing 10 factors and 61 sub-factors that can lead to controversy about an activity. The survey has attracted 333 respondents, who provided over 5100 ratings. The analysis demonstrates the plurality of understanding of what citizen science is and calls for an open understanding of what activities are included in the field. Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:526-opus4-14781 VL - 8 IS - 8 ER -