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Studying Judgments and Decisions Made on the Web Gary McClelland & Barbara Fasolo University of Colorado @ Boulder Society for Judgment and Decision Making New Orleans, November 2000. MouseLab IDB (ca. 1990). IDB—Options x Attributes. IDB—Attributes x Options. IDB—46 x 5. IDB—Continued.
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Studying Judgments and Decisions Made on the Web Gary McClelland & Barbara Fasolo University of Colorado @ Boulder Society for Judgment and Decision Making New Orleans, November 2000 JDM, New Orleans
MouseLab IDB (ca. 1990) JDM, New Orleans
IDB—Options x Attributes JDM, New Orleans
IDB—Attributes x Options JDM, New Orleans
IDB—46 x 5 JDM, New Orleans
IDB—Continued JDM, New Orleans
IDB—Still More JDM, New Orleans
IDB—More Yet! JDM, New Orleans
IDB—The End JDM, New Orleans
Winnowing Options • Specifying Attribute Cutoffs (EBA) • Sorting along Attributes (LEX) • Weighting Attributes (WADD) • Measuring Tradeoffs (MAUT) • Computing Option Score JDM, New Orleans
Elimination-by-Aspects JDM, New Orleans
Elimination-by-Aspects JDM, New Orleans
EBA—Are You Sure? JDM, New Orleans
EBA & LEX JDM, New Orleans
WADD—Getting the Wts JDM, New Orleans
WADD—Weights & Values JDM, New Orleans
Weight Profiles JDM, New Orleans
WADD—Option Score JDM, New Orleans
MAUT—Tradeoffs www.activebuyersguide.com JDM, New Orleans
MAUT—Global JDM, New Orleans
Collaborative Filtering • www.amazon.com • movielens.umn.edu • www.imdb.com JDM, New Orleans
Data Collection • Server Log Files • Messages Sent to Server by • HTML Forms • Javascript • Java JDM, New Orleans
219.den1.phoenixdsl.net - - • [03/Oct/2000:23:22:27 -0600] "GET • /~mcclella/timer.html HTTP/1.1" 200 1358 • 219.den1.phoenixdsl.net – • [03/Oct/2000:23:22:41 -0600] "GET /~mcclella/start.html HTTP/1.1" 200 975 • 219.den1.phoenixdsl.net - - • [03/Oct/2000:23:22:59 -0600] "GET • /~mcclella/another.html HTTP/1.1" 200 771 • 219.den1.phoenixdsl.net - - • [03/Oct/2000:23:23:05 -0600] "GET • /~mcclella/start.html HTTP/1.1" 200 975 • 219.den1.phoenixdsl.net - - • [03/Oct/2000:23:23:13 -0600] "GET • /~mcclella/end.html HTTP/1.1" 200 484 JDM, New Orleans
Online Auctions JDM, New Orleans
Bidding Logs JDM, New Orleans
Bid Bursts on eBay JDM, New Orleans
Friendly and Unfriendly r=.5 r=-.3 JDM, New Orleans
Link to Experiment JDM, New Orleans
PI and Attribute Correlation JDM, New Orleans
Conclusions • Important and real JDM being done on the Web • JDM on the Web leaves lots of traces • JDM Researchers ought to be studying JDM on the Web JDM, New Orleans