New publication on incentive effects in Ghana
The paper "Can Incentive Effects in Web Surveys Be Generalized to Non-Western Countries? Conditional and Unconditional Cash Incentives in a Web Survey of Ghanaian University Students" by Bart Meuleman, Arnim Langer and Annelies Blom has been published in Social Science Computer Review (SSCORE).
Annelies Blom appointed to the Supervisory Board of The Netherlands Institute for Social Research
The Dutch Minister for Health, Welfare and Sport has appointed Prof. Dr. Annelies Blom as a member of the Supervisory Board of The Netherlands Institute for Social Research (SCP) for the period 2017-2021. SCP is a government agency which conducts research into the social aspects of all areas of government policy. The main fields studied are health, welfare, social security, the labour market and education, with a particular focus on the interfaces between these fields. The Supervisory Board has an important supervisory and advisory remit and advises on the Research Programme. It also monitors the scientific standard and social relevance of the work carried out by SCP.
Paper "Explaining Interviewer Effects: A Research Synthesis" accepted for publication
Annelies Blom to present the German Internet Panel in South Korea (14.09.2016)
This year, Statistics Korea
is organizing the 7th International Workshop on Survey Methodology. The
workshop will be held in Daejeon, South Korea on September 28-29, 2016
under the theme of "Challenges and Opportunities in the Era of Data
Deluge". Prof. Annelies Blom has been invited to present the German Internet Panel and will give a
talk "On the Importance of Representative Online Survey Data :
Probability Sampling and Non-Internet Households".
For more information about the conference and the program, please have a look here.
Annelies Blom to chair the ESRA 2017 Scientific Committee (22.03.2016)
Prof. Annelies Blom has been appointed Chair of the Scientific Committee for the 7th biennial conference of the European Survey Research Association (ESRA). The conference will take place in Lisbon, Portugal, from July 18 through to July 22, 2017.
Annelies Blom obtains Chief Editorship of the "mda" journal (22.03.2016)
Annelies Blom and Ulrich Krieger to give a talk in Kyoto, Japan (05.02.2016)
Following the reception of a Kyoto University delegation in February 2015 in Mannheim, this year the German Internet Panel (GIP) will be presented in Japan. Within the scope of the International Conference on Evidence-based Policy in Kyoto (February 5-6), Prof. Annelies Blom and Ulrich Krieger will contribute to the workshop on the current state of social scientific data building at the institute of economic research of Kyoto University. Prof. Blom will give a talk on "Monitoring Reform Preferences", while Ulrich Krieger's contribution will focus in on the panel's "Design and Implementation".
New Publications about the German Internet Panel (01.04.2015)
Two research papers that analyze the German Interent Panel have been published lately.
The first paper by Annelies Blom et. al. (2015) is "A Comparison of Four Probability-Based Online and Mixed-Mode Panels in Europe", Social Science Computer Review, 18 (1).
The second paper was written by Annelies Blom, Christina Gathmann and Ulrich Krieger (2015): "Setting Up an Online Panel Representative of the General Population: The German Internet Panel", Field Methods, 27(4).
Annelies Blom on the thesis-prize committee of the GOR Conference (20.03.2015)
Annelies Blom on the organizing committee for ESRA 2015 (01.01.2015)
Prof. Annelies Blom is part of the organizing committee of the 6th Conference of the European Survey Research Association (ESRA). The conference will take place 13th-17th July 2015 in Reykjavik, Iceland.
Neue Veröffentlichung: Incentives-Effekte in Deutschland (10.09.2014)
Die Zeitschrift "Public Opinion Quarterly" veröffentlicht Artikel aus deutschem Kooperationsprojekt
Der peer-review Aufsatz mit dem Titel "Are incentive effects on response rates and nonresponse bias in large-scale, face-to-face surveys generalizable to Germany? Evidence from ten experiments" von Klaus Pforr, Michael Blohm, Annelies G. Blom, Barbara Erdel, Barbara Felderer, Mathis Fräßdorf, Kristin Hajek, Susanne Helmschrott, Corinna Kleinert, Achim Koch, Ulrich Krieger, Martin Kroh, Silke Martin, Denise Saßenroth, Claudia Schmiedeberg, Eva-Maria Trüdinger und Beatrice Rammstedt wird in der Zeitschrift "Public Opinion Quarterly" erscheinen.
In survey research, a consensus has grown regarding the effectiveness of incentives encouraging survey participation across different survey modes and target populations. Most of this research has been based on surveys from the US, whereas few studies have provided evidence that theseresults can be generalized to other contexts. This paper is the first to present comprehensive information concerning the effects of incentives on response rates and nonresponse bias across large-scale surveys in Germany. The context could be viewed as a critical test for incentive effects because Germany's population is among the most survey-critical in the world, with very low response rates. Our results suggest positive incentive effects on response rates and patterns of effects that are similar to those in previous research. The effect increased with the monetary value of the incentive. Cash incentives affected response propensity more strongly than lottery tickets do. Prepaid incentives could be more cost-effective than conditional incentives. We found mixed results for the effects of incentives on nonresponse bias. Regarding large-scale panel surveys, we could not unequivocally confirm that incentives increased response rates in later panel waves.
Neue Veröffentlichung: Aufbau eines probabilitstischen Online-Panels (01.03.2014)
Die Zeitschrift "Field Methods" veröffentlicht Artikel von Annelies Blom, Christina Gathmann und Ulrich Krieger.
Der peer-review Aufsatz mit dem Titel "Setting Up an Online Panel Representative of the General Population: The German Internet Panel" wird in der Zeitschrift "Field Methods" erscheinen. Abstract: This paper looks into the processes and outcomes of setting-up and maintaining a probability-based longitudinal online survey, which is recruited face-to-face and representative of both the online and offline population aged 16 to 75 in Germany. This German Internet Panel (GIP) studies political and economic attitudes and reform preferences through bi-monthly longitudinal online interviews of individuals. The results presented here demonstrate that a carefully designed and implemented online panel can produce high-quality data at lower marginal costs than existing panels that operate solely in face-to-face mode. Analyses into the representativeness of the online sample showed no major coverage or nonresponse biases. Finally, including offline households in the panel is important as it improves the representation of the older and female segments of the population
Neue Veröffentlichung: Vergleichbarkeit von Ausschöpfungsquoten (19.08.2013)
Das International Journal for Public Opinion
Research (IJPOR) veröffentlicht einen Artikel von Annelies Blom.
Der peer-review Aufsatz mit dem Titel "Setting Priorities: Spurious Differences in Response Rate" ist im International Journal for Public Opinion Research (IJPOR) erschienen.
Response rates are a key quality indicator of a survey. Thus, their comparability across surveys and countries is pivotal. The first round of the European Social Survey contains a natural experiment in the estimation of response rates. While all countries implemented the same standardized contact protocol to record the outcome of each contact attempt, no instructions were given as to how to code a final case disposition from these individual contact attempts and each country chose its own strategy. We demonstrate that the coding strategy chosen has a substantial impact on the response rates reported. In particular, contact and cooperation rates derived by means of different coding strategies are incomparable across countries when intensive refusal conversion efforts are in place.
Zeitschriftenaufsatz zur Messung von Interviewereffekten veröffentlicht
Annelies Blom und Julie Korbmacher veröffentlichen Artikel in der ersten Ausgabe der Zeitschrift "Survey Methods: Insights from the Field".
Der peer-review Aufsatz mit dem Titel "Measuring Interviewer Characteristics Pertinent to Social Surveys: A Conceptual Framework" erschien in der ersten Ausgabe der neuen open-access Zeitschrift "Survey Methods: Insights from the Field", welche am 1. Februar 2013 veröffentlicht wurde.
Interviewer effects are found across all types of interviewer-mediated surveys crossing disciplines and countries. While studies describing interviewer effects are manifold, identifying characteristics explaining these effects has proven difficult due to a lack of data on the interviewers. This paper proposes a conceptual framework of interviewer characteristics for explaining interviewer effects and its operationalization in an interviewer questionnaire. The framework encompasses four dimensions of interviewer characteristics: interviewer attitudes, interviewers' own behaviour, interviewers' experience with measurements, and interviewers' expectations. Our analyses of the data collected from interviewers working on the fourth wave of SHARE Germany show that the above measures distinguish well between interviewers.
Prof. Blom wird Adjunct Professorin an der Pyongyang University of Science and Technology
Zum Abschluss des Pyongyang Summer Institute in Survey
Science and Quantitative Methodology (PSI) wurde Prof. Blom der Titel der
Adjunct Professorin verliehen.
Prof. Dr. Blom unterrichtete im July 2012 zwei Wochen lang am Pyongyang Summer Institute in Survey Science and Quantitative Methodology (PSI) in Nordkorea Kurse in Statistik und Stichprobenziehung. In der Abschlussfeier der Summer School verlieh Dr. James Chin-Kyung Kim, Präsident der Universität, den Dozenten den Ehrentitel Adjunct Professor der Pyongyang University of Science and Technology (PUST).
Artikel zum Pyongyang Summer Institute im Mannheimer Morgen (vom 19.9.2012)
Annelies Blom wird Juniorprofessorin an der Universität Mannheim
Damit folgt sie dem Ruf der Universität Mannheim auf die Juniorprofessur "Methoden der empirischen Sozialforschung, insbesondere Internet Panel Surveys".
Prof. Dr. Blom übernimmt zudem auch die Leitung des German Internet Panels (GIP) am Sonderforschungsbereich 884 "Politische Ökonomie von Reformen".