1. UNIVERSIDAD CATÓLICA SAN PABLO VICTOR ARROYO victor.arroyo@ucsp.edu.pe Antti Oulasvirta, Janne P. Hukkinen Helsinki University of Technology TKK Barry Schwartz Psychology Department Swarthmore College

2. 1) Introduction 2) Choice Among Results 3) Method 4) Results 5) Conclusion

3.  Google  The paradox of choice 1)Introduction 2)Choice Among Results 3)Method 4)Results 5)Conclusion

5.  Phase 1: Attraction  Phase 2: Choice n(n-1)/2  Phase 3: Evaluation 1)Introduction 2)Choice Among Results 3)Method 4)Results 5)Conclusion

6.  Participants  Experimental design  Materials  Procedure 1)Introduction 2)Choice Among Results 3)Method 4)Results 5)Conclusion

7.  Satisfaction  Confidence  Carefulness  Suitability 1)Introduction 2)Choice Among Results 3)Method 4)Results 5)Conclusion

10.  We found that a six-item search result list was associated with higher satisfaction, confidence, and perceived carefulness than a 24-item list.  The paradox of choice has important implications for the design of search engine results. 1)Introduction 2)Choice Among Results 3)Method 4)Results 5)Conclusion