Systematicity of Search Index: A new measure for exploring information search patterns

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Abstract

We propose a new measure for explaining information search and compare it to the search index (SI, Payne, 1976), the most commonly used measure for exploring the pattern of search in process-tracing studies. The systematicity of search index (SSI) explores the pattern of search in terms of systematicity or the proportion of non- random search, i.e. search that is compensatory (alternative-wise) or noncompen- satory (attribute-wise) corrected for chance. The SI, on the other hand, shows the proportion of compensatory and noncompensatory search ignoring random search. We expect that the SSI will be higher in environments where information is visually organized compared to environments where it is disorganized. We test the SSI in a discrete choice experiment with four within-subjects conditions (compensatory, non- compensatory, matrix, and random matrix visual grouping) using eye tracking tech- nology. The results show a higher SSI in the matrix compared to the random matrix condition. The SI, however, is close to zero in both conditions. The compensatory and noncompensatory conditions show similar SSI, but differ on SI. Our experiment shows that the SSI is useful for calculating the amount of systematic search patterns in process-tracing studies and can shed light on processes not captured by the SI.
Original languageEnglish
Publication date2017
Publication statusPublished - 2017
EventThe 36th meeting of the European Group of Process Tracing Studies in Judgment and Decision Making (EGPROC) - National University of Ireland Galway, Galway, Ireland
Duration: 22 Jun 201724 Jun 2017
http://www.conference.ie/Conferences/index.asp?Conference=508

Conference

ConferenceThe 36th meeting of the European Group of Process Tracing Studies in Judgment and Decision Making (EGPROC)
LocationNational University of Ireland Galway
Country/TerritoryIreland
CityGalway
Period22/06/201724/06/2017
Internet address

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