Appendix

Web-based Survey Instrument:

http://www.netraker.com/code/delivery.asp?action=IE&SID=376443&FID=358245

Online/raw survey results:

http://www.netraker.com/code/login.asp

[login required, accessible to team members and instructor]

Data in SPSS

Recruitment/Instructions for Participants:

Dear friend,

As part of a statistics and usability course (SIMS271) in the School of

Information Management Systems (http://sims.berkeley.edu/), we are

conducting a very brief survey on Search Engine Use. There are 32 brief

questions about your use of Search Engines. We would greatly appreciate it

if you could please fill out the survey at your earliest convenience:

http://www.netraker.com/code/delivery.asp?action=IE&SID=376443&FID=358245

All responses to the survey are completely anonymous. The responses are for

course research purposes only. Do not hesitate to contact us with

questions.

Thank you for your help,

Mike Chen (UC Berkeley Computer Science, mikechen@cs.berkeley.edu)

Jeanne Dal Busco (UC Berkeley SIMS, dalbusco@hotbot.com)

Kim Garrett (UC Berkeley SIMS, kimg@sims.berkeley.edu)

Anoop Sinha (UC Berkeley Computer Science, aks@cs.berkeley.edu)

Pilot Test

Initial pilots were performed on paper, while the final iteration and ultimate deployment were using a web-based method. The survey instrument was designed in several iterations. Team members drafted the initial survey, using our own experience and other search-related survey instruments and past research results as sources. The survey was initially piloted with 3 participants, on paper with a team member at hand to observe and answer questions. The paper pilot pointed to the potential for dissonance between asking people their favorite search engine, and presuming the set of frequently used engines was identical, as mentioned in the analysis. As a result, we added a separate question asking respondents to identify the engines they used frequently, in addition to the question regarding their favorite engines.

This subsequent iteration was piloted online by email to approximately five participants, to fine-tune the survey instrument as well as test the web-based survey for problems. We made no changes as a result of the online pilot.

Pilot participants were selected from the same pool as the final sample (technically knowledgable, 'Internet savvy' individuals).

Initial Paper Pilot

Final Survey Instrument

Tables & Charts

Demographics

Gender and Age of Respondents

Frequencies

**Statistics**
	N		Mean	Median	Mode	Std. Deviation	Variance
	Valid	Missing	Mean	Median	Mode	Std. Deviation	Variance
Q1-How long have you been using the Web?	64	0	5.77	6.00	6	.43	.18
Q2-On average, how much time a day do you use the Internet?	64	0	3.22	3.00	2	1.56	2.43
Q3-How often do you use the Internet to find information?	64	0	2.09	2.00	2	.71	.50
Q4-How often do you use a web search engine to find something on the Web?	64	0	2.31	2.00	2	.85	.73
Q8-Please select a primary web search engine, one that you would say that you primarily use when looking for information online:	64	0	13.28	11.00	11	6.68	44.68
Q9-How do you usually get to your primary search engine?	63	1	2.32	2.00	2	1.53	2.35
Q10-When did you first start using your primary search engine?	64	0	3.72	4.00	3(a)	1.15	1.32
Q11-Overall, how would you compare your primary search engine to other search engines you use frequently?	64	0	1.77	2.00	2	.64	.40
Q31-What is your gender?	64	0	1.38	1.00	1	.49	.24
Q32-What is your age?	64	0	4.25	4.00	4	.84	.70
a Multiple modes exist. The smallest value is shown