{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,9]],"date-time":"2026-07-09T08:50:02Z","timestamp":1783587002780,"version":"3.55.0"},"reference-count":46,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2009,5,26]],"date-time":"2009-05-26T00:00:00Z","timestamp":1243296000000},"content-version":"vor","delay-in-days":145,"URL":"http:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Advances in Human-Computer Interaction"],"published-print":{"date-parts":[[2009,1]]},"abstract":"<jats:p>Guidelines for designing usable interfaces recommend reducing short term memory load. Cognitive load, that is, working memory demands during problem solving, reasoning, or thinking, may affect users\u2032 general satisfaction and performance when completing complex tasks. Whereas in design guidelines numerous ways of reducing cognitive load in interactive systems are described, not many attempts have been made to measure cognitive load in Web applications, and few techniques exist. In this study participants\u2032 cognitive load was measured while they were engaged in searching for several products in four different online book stores. NASA\u2010TLX and dual\u2010task methodology were used to measure subjective and objective mental workload. The dual\u2010task methodology involved searching for books as the primary task and a visual monitoring task as the secondary task. NASA\u2010TLX scores differed significantly among the shops. Secondary task reaction times showed no significant differences between the four shops. Strong correlations between NASA\u2010TLX, primary task completion time, and general satisfaction suggest that NASA\u2010TLX can be used as a valuable additional measure of efficiency. Furthermore, strong correlations were found between browse\/search preference and NASA\u2010TLX as well as between search\/browse preference and user satisfaction. Thus we suggest browse\/search preference as a promising heuristic assessment method of cognitive load.<\/jats:p>","DOI":"10.1155\/2009\/121494","type":"journal-article","created":{"date-parts":[[2009,5,26]],"date-time":"2009-05-26T13:39:26Z","timestamp":1243345166000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":61,"title":["Cognitive Load in eCommerce Applications\u2014Measurement and Effects on User Satisfaction"],"prefix":"10.1155","volume":"2009","author":[{"given":"Peter","family":"Schmutz","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Silvia","family":"Heinz","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yolanda","family":"M\u00e9trailler","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Klaus","family":"Opwis","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2009,5,26]]},"reference":[{"key":"e_1_2_6_1_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0079-7421(08)60452-1"},{"key":"e_1_2_6_2_2","doi-asserted-by":"crossref","unstructured":"NielsenJ. 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