July 14, 2005

Islamic Extremism: Common Concern for Muslim and Western Publics

Methodological Appendix

About the 2005 Global Attitudes Survey

Results for the survey are based on telephone and face-to-face interviews conducted under the direction of Princeton Survey Research Associates International. All surveys are based on national samples except in China, India, Morocco and Pakistan where the sample was disproportionately or exclusively urban.

The table below shows the margin of sampling error based on all interviews conducted in that country. For results based on the full sample in a given country, one can say with 95% confidence that the error attributable to sampling and other random effects is plus or minus the margin of error. In addition to sampling error, one should bear in mind that question wording and practical difficulties in conducting surveys can introduce error or bias into the findings of opinion polls.

Country: Britain
Company: NOP World
Sample design: Probability
Mode: Telephone adults 18 plus
Languages: English
Fieldwork dates: April 25-May 7, 2005
Sample size: 750
Margin of Error: 4%
Representative: Telephone households

Country: Canada
Company: Environics
Sample design: Probability
Mode: Telephone adults 18 plus
Languages: English and French
Fieldwork dates: May 6-11, 2005
Sample size: 500
Margin of Error: 4%
Representative: Telephone households

Country: China
Company: Data cited are from the Horizon Consultancy Group
Sample design: Probability sample in six cities and surrounding rural areas — Shanghai (in east China), Beijing (north), Guangzhou (southeast), Chengdu (southwest), Wuhan (central) and Shenyang (northeast).
Mode: Face-to-face adults 18 to 60
Languages: Chinese (dialects: Mandarin, Beijingese, Cantonese, Sichuan, Hubei, Dongbei, Shanghaiese)
Fieldwork dates: May 21-31, 2005
Sample size: 2191
Margin of Error: 2%
Representative: Disproportionately urban

Country: France
Company: Taylor, Nelson & Sofres (TNS)
Sample design: Quota
Mode: Telephone adults 18 plus
Languages: French
Fieldwork dates: May 2-7, 2005
Sample size: 751
Margin of Error: 4%
Representative: Telephone households

Country: Germany
Company: TNS EMNID
Sample design: Probability
Mode: Telephone adults 18 plus
Languages: German
Fieldwork dates: April 27-May 4, 2005
Sample size: 750
Margin of Error: 4%
Representative: Telephone households

Country: India
Company: TNS
Sample design: Probability
Mode: Face-to-face adults 18-64
Languages: Hindi, Gujarati, Tamil, Kannada, Bengali
Fieldwork dates: May 1-29, 2005
Sample size: 2042
Margin of Error: 2%
Representative: Urban only

Country: Indonesia
Company: TNS Indonesia
Sample design: Probability
Mode: Face-to-face adults 18 plus
Languages: Bahasa Indonesia
Fieldwork dates: April 30-May 16, 2005
Sample size: 1022
Margin of Error: 3%
Representative: Eighteen provinces representing 87% of adult population

Country: Jordan
Company: MRO
Sample design: Probability
Mode: Face-to-face adults 18 plus
Languages: Arabic
Fieldwork dates: May 3-24, 2005
Sample size: 1000
Margin of Error: 3%
Representative: Adult population

Country: Lebanon
Company: MRO
Sample design: Probability
Mode: Face-to-face adults 18 plus
Languages: Arabic
Fieldwork dates: May 3-24, 2005
Sample size: 1000
Margin of Error: 3%
Representative: Adult population

Country: Morocco
Company: Pan Arab Research Center
Sample design: Probability
Mode: Face-to-face adults 18 plus
Languages: French and Arabic
Fieldwork dates: June 6-16, 2005
Sample size: 1000
Margin of Error: 3%
Representative: Disproportionately urban

Country: Netherlands
Company: TNS NIPO
Sample design: Probability
Mode: Telephone adults 18 plus
Languages: Dutch
Fieldwork dates: April 27-May 11, 2005
Sample size: 754
Margin of Error: 4%
Representative: Telephone households

Country: Pakistan
Company: ACNielsen Aftab
Sample design: Probability
Mode: Face-to-face adults 18 plus
Languages: Urdu
Fieldwork dates: May 2-24, 2005
Sample size: 1225
Margin of Error: 3%
Representative: Disproportionately urban

Country: Poland
Company: Ipsos-Demoskop
Sample design: Probability
Mode: Face-to-face adults 18 plus
Languages: Polish
Fieldwork dates: April 27-May 29, 2005
Sample size: 1024
Margin of Error: 3%
Representative: Adult population

Country: Russia
Company: Bashkirova & Partners
Sample design Probability
Mode: Face-to-face adults 18 plus
Languages: Russian
Fieldwork dates: April 28-May 13, 2005
Sample size: 1002
Margin of Error: 3%
Representative: Adult population

Country: Spain
Company: TNS-Demoscopia
Sample design: Probability
Mode: Telephone adults 18 plus
Languages: Spanish
Fieldwork dates: April 20-28, 2005
Sample size: 751
Margin of Error: 4%
Representative: Telephone households

Country: Turkey
Company: PIAR-TNS
Sample design: Probability
Mode: Face-to-face adults 18 plus
Languages: Turkish
Fieldwork dates: April 27-May 14, 2005
Sample size: 1003
Margin of Error: 3%
Representative: Adult population

Country: United States
Company: Princeton Data Source
Sample design: Probability
Mode: Telephone adults 18 plus
Languages: English
Fieldwork dates: May 18-22, 2005
Sample size: 1001
Margin of Error: 3%
Representative: Telephone households in continental US