PERCEIVED BURDEN, FOCUS OF ATTENTION, AND THE URGE TO JUSTIFY: THE IMPACT OF THE NUMBER OF SCREENS AND PROBE ORDER ON THE RESPONSE BEHAVIOR OF PROBING QUESTIONS

Web probing is a valuable tool to assess the validity and comparability of survey items. It uses different probe types-such as category-selection probes and specific probes-to inquire about different aspects of an item. Previous web probing studies often asked one probe type per item, but research situations exist where it might be preferable to test potentially problematic items with multiple probes. However, the response behavior might be affected by two factors: question order and the visual presentation of probes on one screen versus multiple screens as well as their interaction. In this study, we report evidence from a web experiment that was conducted with 532 respondents from Germany in September 2013. Experimental groups varied by screen number (1 versus 2) and probe order (category-selection probe first versus specific probe first). We assessed the impact of these manipulations on several indicators of response quality, probe answer content, and the respondents' motivation with logistic regressions and two-way ANOVAs. We reveal that multiple mechanisms push response behavior in this context: perceived response burden, the focus of attention, the need for justification, and verbal context effects. We find that response behavior in the condition with two screens and category-selection probe first outperforms all other experimental conditions. We recommend this implementation in all but one scenario: if the goal is to test an item that includes a key term with a potentially too large lexical scope, we recommend starting with a specific probe but on the same screen as the category-selection probe.