1. Nov 2000JDM, New Orleans1 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

2. Nov 2000JDM, New Orleans2 MouseLab IDB (ca. 1990)

3. Nov 2000JDM, New Orleans3 IDB—Options x Attributes

4. Nov 2000JDM, New Orleans4 IDB—Attributes x Options

5. Nov 2000JDM, New Orleans5 IDB—46 x 5

6. Nov 2000JDM, New Orleans6 IDB—Continued

7. Nov 2000JDM, New Orleans7 IDB—Still More

8. Nov 2000JDM, New Orleans8 IDB—More Yet!

9. Nov 2000JDM, New Orleans9 IDB—The End

10. Nov 2000JDM, New Orleans10 Winnowing Options Specifying Attribute Cutoffs (EBA) Sorting along Attributes (LEX) Weighting Attributes (WADD) Measuring Tradeoffs (MAUT) Computing Option Score

11. Nov 2000JDM, New Orleans11 Elimination-by-Aspects

12. Nov 2000JDM, New Orleans12 Elimination-by-Aspects

13. Nov 2000JDM, New Orleans13 EBA—Are You Sure?

14. Nov 2000JDM, New Orleans14 EBA & LEX

15. Nov 2000JDM, New Orleans15 WADD—Getting the Wts

16. Nov 2000JDM, New Orleans16 WADD—Weights & Values

17. Nov 2000JDM, New Orleans17 Weight Profiles

18. Nov 2000JDM, New Orleans18 WADD—Option Score

19. Nov 2000JDM, New Orleans19 MAUT—Tradeoffs www.activebuyersguide.com

20. Nov 2000JDM, New Orleans20 MAUT—Global

21. Nov 2000JDM, New Orleans21 Collaborative Filtering www.amazon.com movielens.umn.edu www.imdb.com

22. Nov 2000JDM, New Orleans22 Data Collection Server Log Files Messages Sent to Server by –HTML Forms –Javascript –Java

23. Nov 2000JDM, New Orleans23

24. Nov 2000JDM, New Orleans24 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

25. Nov 2000JDM, New Orleans25 Online Auctions

26. Nov 2000JDM, New Orleans26 Bidding Logs

27. Nov 2000JDM, New Orleans27 Bid Bursts on eBay

28. Nov 2000JDM, New Orleans28 Friendly and Unfriendly r=.5 r=-.3

29. Nov 2000JDM, New Orleans29 Link to Experiment

30. Nov 2000JDM, New Orleans30 PI and Attribute Correlation

31. Nov 2000JDM, New Orleans31 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