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The ifo Institute for Economic Research has been conducting the ifo business survey since its foundation in 1949. To ensure stability of participation rates, regular sample recruitment is indispensable. Does the dispatch method matter for response rates of a recruiting campaign? To answer this question, we conducted a controlled experiment involvin...
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Context 1
... franking mark consists of a special 'Dialogpost' franking wave and can be supplemented by a customized graphic (see Figure 1). Figure 2 shows an example for standard mailing. Comparing both figures, one can clearly see optical differences between the two forms of mailing, due to franking specifications by Deutsche Post AG. ...
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While online panels offer numerous advantages, they are often criticized for excluding the offline population. Therefore, some probability-based online panels have developed offline population inclusion strategies. Two dominant approaches prevail: providing internet equipment and offering an alternative survey participation mode. We investigate the...
