naa a22 4500 510777503 CHVBK 20180411083235.0 cr unu---uuuuu 180411e20130601xx s 000 0 eng 10.3758/s13428-012-0265-2 doi (NATIONALLICENCE)springer-10.3758/s13428-012-0265-2 Seriousness checks are useful to improve data validity in online research [Elektronische Daten] [Frederik Aust, Birk Diedenhofen, Sebastian Ullrich, Jochen Musch] Nonserious answering behavior increases noise and reduces experimental power; it is therefore one of the most important threats to the validity of online research. A simple way to address the problem is to ask respondents about the seriousness of their participation and to exclude self-declared nonserious participants from analysis. To validate this approach, a survey was conducted in the week prior to the German 2009 federal election to the Bundestag. Serious participants answered a number of attitudinal and behavioral questions in a more consistent and predictively valid manner than did nonserious participants. We therefore recommend routinely employing seriousness checks in online surveys to improve data validity. Psychonomic Society, Inc., 2012 Online research nationallicence Participant screening nationallicence Seriousness nationallicence Voting survey nationallicence Incremental validity nationallicence Methodology nationallicence Aust Frederik Department of Experimental Psychology, University of Duesseldorf, Universitaetsstrasse 1, Building 23.03, 40225, Duesseldorf, Germany aut Diedenhofen Birk Department of Experimental Psychology, University of Duesseldorf, Universitaetsstrasse 1, Building 23.03, 40225, Duesseldorf, Germany aut Ullrich Sebastian Department of Experimental Psychology, University of Duesseldorf, Universitaetsstrasse 1, Building 23.03, 40225, Duesseldorf, Germany aut Musch Jochen Department of Experimental Psychology, University of Duesseldorf, Universitaetsstrasse 1, Building 23.03, 40225, Duesseldorf, Germany aut Behavior Research Methods Springer-Verlag 45/2(2013-06-01), 527-535 45:2<527 2013 45 13428 https://doi.org/10.3758/s13428-012-0265-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.3758/s13428-012-0265-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Aust Frederik Department of Experimental Psychology, University of Duesseldorf, Universitaetsstrasse 1, Building 23.03, 40225, Duesseldorf, Germany aut NATIONALLICENCE 700 1- Diedenhofen Birk Department of Experimental Psychology, University of Duesseldorf, Universitaetsstrasse 1, Building 23.03, 40225, Duesseldorf, Germany aut NATIONALLICENCE 700 1- Ullrich Sebastian Department of Experimental Psychology, University of Duesseldorf, Universitaetsstrasse 1, Building 23.03, 40225, Duesseldorf, Germany aut NATIONALLICENCE 700 1- Musch Jochen Department of Experimental Psychology, University of Duesseldorf, Universitaetsstrasse 1, Building 23.03, 40225, Duesseldorf, Germany aut NATIONALLICENCE 773 0- Behavior Research Methods Springer-Verlag 45/2(2013-06-01), 527-535 45:2<527 2013 45 13428 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer