Dependent Interviewing and Sub-Optimal Responding

With proactive dependent interviewing (PDI) respondents are reminded of the answer they gave in the previous interview, before being asked about their current status. PDI is used in panel surveys to assist respondent recall and reduce spurious changes in responses over time. PDI may however provide scope for new errors if respondents falsely accept the previous information as still being an accurate description of their current situation. In this paper we use data from the German Labour Market and Social Security panel study, in which an error was made with the preload data for a PDI question about receipt of welfare benefit. The survey data were linked to individual administrative records on receipt of welfare benefit. A large proportion of respondents accepted the false preload. This behaviour seems mainly driven by the difficulty of the response task: respondents with a more complex history of receipt according to the records were more likely to confirm the false preload. Personality also seemed related to the probability of confirming. Predictors of satisficing, indicators of satisficing on other items in the survey, and characteristics of the survey and interviewer were not predictive of confirming the false preload

1957: Abilene Christian College Bible Lectures - Full Text

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Process control of RF plasma assisted surface cleaning

Aluminum plates contaminated with hydrocarbon containing compounds (lubricants) were treated in an argon, oxygen and hydrogen plasma generated by a capacitively coupled 13.56 MHz rf discharge. Power and gas pressure have been varied. During the process the plasma was monitored by optical emission spectroscopy. The spectral line intensities of several species have been measured as a function of the process duration and of the macroscopic parameters. Typical time constants for the cleaning process have been obtained. In order to determine thicknesses and optical properties of the contamination, spectroscopic ellipsometry was used whereas the removal of the contamination layers was observed by means of in situ kinetic ellipsometry. The determined cleaning rates per discharge power are 0.1 nm/Ws for O2 and about 0.01 nm/Ws for Ar and H2 which emphasizes the efficiency of oxygen plasma treatment