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Nonresponse in surveys may result in a distortion of the distribution of interest. In a panel survey the participation behavior in later waves is different from the participation behavior at the start. With register data that cover also the information for non-respondents one can observe a fade...
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Flexibles Carsharing bietet in den Städten eine Alternative zum privaten PKW-Besitz. Der mögliche Beitrag dieser Dienstleistungen zu einer Reduktion der Autoanzahl wird aber immer wieder kontrovers diskutiert. Die empirische Datenbasis zu dieser Frage ist bisher noch relativ klein. Die...
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commercial survey company in Germany). The survey was conducted in order to provide a post-hoc test of the stimulus material … Germany. In contrast to previous studies, we asked respondents to rate in how far a range of bipolar adjectives that belong to … primary dimension when it comes to stereotypes about immigrant groups in Germany. Ascribed Capacity, Beliefs, and Power seem …
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online participation is not significantly affected by sector affiliation, affiliation to East or West Germany nor information …
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We propose a novel view of selection bias in longitudinal surveys. Such bias may arise from initial nonresponse in a probability sample, or it may be caused by self-selection in an internet survey. A contraction theorem from mathematical demography is used to show that an initial bias can...
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A large literature studies subjective beliefs about economic facts using unincentivized survey questions. We devise randomized experiments in a representative online survey to investigate whether incentivizing belief accuracy affects stated beliefs about average earnings by professional degree...
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