Web Survey Bibliography
Five experiments examined whether and how participation in Web based studies was influenced by such a simple measure as framing the reception of an incentive as being contingent on the completeness of the submitted questionnaire. Four experiments were carried out in a university-based online panel and one in a market research online panel. Four times the incentive was a prize draw and once it was a personal gift. Two conditions were contrasted in the experiments: one group received an invitation e-mail mentioning that all participants are eligible for the incentive, whereas the other group was told that only those participants who completely fill-out the questionnaire would receive the incentive. Dependent measures were response, retention, number of omitted closed-ended items, length of answers to open-ended questions, and stereotypical answering of grid-like question batteries. Across all experiments consistent patterns were found suggesting that conditional incentives decrease response and increase retention and data quality. However, in neither study these tendencies reached a conventional level of statistical significance. Therefore, individual results were meta-analytically integrated to find out whether individual experiments were merely underpowered to detect small effects.
Fünf Experimente widmeten sich der Fragestellung, ob und wie die Teilnahme an webbasierten Studien dadurch beeinflusst wird, dass der Erhalt eines materiellen Anreizes von der Vollständigkeit des ausgefüllten Fragebogens abhängig gemacht wird. Von den fünf Experimenten wurden vier in einem universitären Online-Panel und eines in einem kommerziellen Marktforschungspanel durchgeführt. Vier mal wurde als Incentive die Teilnahme an einer Verlosung angeboten: ein mal wurde ein persönliches Incentive ausgelobt. In jedem Experiment wurden zwei Bedingungen kontrastiert: Eine zufällig ausgewählte Gruppe erhielt eine Einladungs-E-Mail, in der erwähnt wurde, dass alle Teilnehmer eine Anwartschaft auf das Incentive haben, wogegen der anderen Gruppe mitgeteilt wurde, dass nur Teilnehmer, welche den Fragebogen vollständig ausfüllen, für das Incentive in Frage kommen. Abhängige Variablen waren die Ausschöpfung, die Retention, die Zahl der nicht beantworteten geschlossenen Fragen, die Länge der Antworten auf offene Fragen sowie die stereotype Beantwortung von Matrix-Fragen. Über alle Experimente hinweg wurden Muster in der Richtung beobachtet, dass konditionale Incentives die Ausschöpfung senken, die Retention und die Datenqualität jedoch heben. Allerdings waren diese Tendenzen in keinem der Experimente signifikant. Deswegen wurden in einem zweiten Schritt die einzelnen Studien meta-analytisch zusammengefasst, um herauszufinden, ob die Primärstudien lediglich eine zu geringe Teststärke aufwiesen, um kleine bis sehr kleine Effekte aufzudecken.
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Web survey bibliography - Germany (361)
- The Video-Enhanced Web Survey Data Quality and Cognitive Processing of Questions; 2009; Fuchs, M.
- Gender-of-Interviewer Effects in a Video-Enhanced Web Survey: Results from a Randomized Field Experiment...; 2009; Fuchs, M.
- Mobility, Flexibility and Identity - How the use of mobile questionnaires improves the data quality...; 2009; Hellwig, O., Wirth, T.
- Evaluating two different mobile survey approaches: personal mobile panel research and ad-hoc mobile...; 2009; Friedrich-Freksa, M., Metzger, G.
- Coverage- und Nonresponse-Effekte bei Online-Bevölkerungsumfragen ; 2009; Bandilla, W., Kaczmirek, L., Blohm, M., Neubarth, W.
- Using the World-Wide Web to obtain large-scale word norms: 190,212 ratings on a set of 2,654 German...; 2009; Lahl, O., Goeritz, A., Pietrowsky, R., Rosenberg, J.
- TitleInternet-basierte Messung sozialer Erwünschtheit: Theoretische Grundlagen und experimentelle Untersuchung...; 2008; Kaufmann, E., Reips, U.-D.
- Sozialforschung im Internet: Methodologie und Praxis der Online-Befragung; 2008; Jackob, N., Schoen, H., Zerback, T. (eds.)
- Does speed in completing an online questionnaire have an influence on its reliability?; 2008; Montag, C., Reuter, M.
- Response Effects in Video-enhanced Web Surveys; 2008; Fuchs, M.
- Using Internet Pages of Organisations as Data Source for Social Science Research; 2008; Baumgarten, B., Grauel, J.
- Representativeness in Online-Surveys Through Stratified Sample; 2008; Blasius, J.
- Individual payments as a longer-term incentive in online panels ; 2008; Goeritz, A., Wolff, H.-G., Goldstein, D. G.
- Communicative Channels, Cognitive Processes and Question Understanding: Results from a Randomized Field...; 2008; Fuchs, M.
- The effects of incentives in internet panels: a review; 2008; Goeritz, A.
- Phone respondents reported less mental health problems whereas mail interviewee gave higher physical...; 2008; Ravens-Sieberer, U., Erhart, M., Wetzel, R., Krügel, A., Brambosch, A.
- Mobile Market Research; 2008; Maxl, E.
- Online vs. Offline in Mobile Surveys; 2008; Neubarth, W., Maier, U.
- Gender-of-Interviewer Effects in Video-Enhanced Web Surveys. Results from a Randomized Field-Experiment...; 2008; Fuchs, M.
- Nicht-reaktive datenerhebung: Teinahmeverhalten bei befragungen mit paradaten evaluieren. [Non reactive...; 2007; Kaczmirek, L., Neubarth, W.
- Using Audio and Video Clips in Web Surveys — Feasibility and Impact on Data Quality; 2007; Fuchs, M., Funke, F.
- Sampling Bias: Face to face to Web; 2007; Bandilla, W., Blohm, M., Kaczmirek, L., Neubarth, W.
- First Experiences with Internet Surveying in the German Socio-Economic Panel; 2007; Wagner, G. G., Schupp, J., Schraepler, J.-P., Siegel, N.
- The anonymous elect. Market research through online access panels; 2006; Postoaca, A.
- Blocked versus randomized format of questionnaires. A confirmatory multigroup analysis; 2006; Sparfeldt, J. R., Schilling, S. R., Rost, D. H., Rost, D. H., Thiel, A.
- Physical or Virtual Presence of the Experimenter: Psychological Online-Experiments in Different Settings...; 2006; Ollesch, H., Heineken, E., Schulte, F. P.
- Cash Lotteries as Incentives in Online Panels; 2006; Goeritz, A.
- Putting a Questionnaire on the Web is not Enough # A Comparison of Online and Offline Surveys Conducted...; 2006; Faas, T., Schoen, H.
- Beyond response rates: Effects of different (Web-) survey implementation procedures on sample composition...; 2006; Bosnjak, M., Marcus, B., Schuetz, A., Lindner, S., Pilischenko, S.
- Controlling the Baseline Speed of Respondents: An Empirical Evaluation of Data Treatment Methods of...; 2005; Mayerl, J.
- Determinanten der Rücklaufquote in Online-Panels; 2005; Batanic, B., Moser, K.
- Standards in Online Surveys. Sources for Professional Codes of Conduct, Ethical Guidelines and Quality...; 2005; Kaczmirek, L., Schulze, N.
- Sampling procedure, questionnaire design, online implementation; 2005; Jackob, N., Arens, J., Zerback, T., Jowell, R., de Rouvray, C.
- When Methodology Interferes With Substance; 2005; Schoen, H., Faas, T.
- The Quality of Ego-Centered Network Data: A comparison of online versus offline data collection; 2005; Snijders, C., Matzat, U.
- Meta-Analyses on Contingent versus Unconditional Incentives; 2005; Goeritz, A.
- Using an access panel as a sampling frame for voluntary household surveys. Experiences from a pilot...; 2004; Korner, T., Nimmergut, A.
- Examining expert reviews as a pretest method; 2004; DeMaio, T., Landreth, A.
- Cooperation and Community on the Internet: Past Issues and Present Perspectives for theoretical-empirical...; 2004; Matzat, U.
- Response and Field Period Effects: The Effect of Time in Online Market Research and Consequences for...; 2004; Basso Larsen, R., Rathod, S.
- Online or Not Online? A Comparison of Offline and Online Surveys Conducted in the Context of 2002 German...; 2004; Faas, T.
- Changing from PAPI to CAPI: A Longitudinal Study Dealing with Mode-Effects in the German Socio-Economic...; 2004; Schraepler, J.-P., Schupp, J., Wagner, G. G
- Paper and pencil or online? Methodological Experiences from an employee survey; 2004; Poetschke, M.
- Survey Administration Effects? A Comparison of Web-Based and Traditional Written Self-Administered Surveys...; 2003; Bandilla, W., Bosnjak, M., Altdorfer, P.
- Bracketing effects in categorized survey questions and the measurement of economic quantities; 2002; Winter, J.
- WeXtor 2.5: Develop, manage, and visualize experimental designs and procedures; 2002; Reips, U.-D., Blumer, T., Neuhaus, C.
- Cognitive processes when answering online questionnaires; 2002; Fuchs, M.
- Online surveys with simple random samples for large populations; 2002; Kreuels, B.
- Sampling problems in research on personal Homepages; 2002; Marcus, B., Machilek, F., Schuetz, A., Kilian, C.
- Social desirable responding and age on the Internet: older participants in online studies show a higher...; 2002; Reips, U.-D., Stoeber, J., Hahn, A.