Migrant samples in the GINPS: Sampling and method bias
1. Migrant samples in the
Giving in the Netherlands Panel Survey
Sampling and method bias
Arjen de Wit
Exchange meeting German Centre of
Gerontology (DZA), Berlin
November 4, 2013
3. Migrants in the GINPS
Giving in the Netherlands Panel Survey
Migrant cross-sectional sample from 2008
Turks, Moroccans, Surinamese and Antilleans
In 2008, Afghans too
N > 140 per group
4. Migrants in the GINPS
Giving in the Netherlands Panel Survey
Migrant cross-sectional sample from 2008
Turks, Moroccans, Surinamese and Antilleans
In 2008, Afghans too
N > 140 per group
5. Sampling
Quota sampling
Snowballing, but different groups (families,
tribes) may dislike each other
Incentives
CAWI preferred among native Dutch
Complemented with CAPI
10. Example: empathic concern
Measured on a 5 points scale
– I often feel concern for people who are less
fortunate materially than me
– Other people's problems do not usually bother
me
– Other people's misfortune does not usually
bother me
– I am often touched by what other people go
through
14. BREAKING
Migrants are more empathic
AMSTERDAM – Values of empathic concern
are more strongly developed among
migrants than among native Dutch, VU
University research shows.
15. Example: empathic concern
I
III
0.15 *
(0,06)
0,11
(0,07)
0,03
(0,07)
0,12
(0,06)
Migrant (0/1)
II
0,08
(0,06)
0,27 **
(0,05)
Unstandardized regression coefficients
Standard errors in parentheses
* p < 0.05
** p < 0.01
16. Example: empathic concern
I
Migrant (0/1)
II
III
0.15 *
(0.06)
0.11
(0.07)
0,03
(0,07)
0.12
(0.06)
0,08
(0,06)
CAPI (0/1)
Being religious (0/1)
Unstandardized regression coefficients
Standard errors in parentheses
* p < 0.05
** p < 0.01
0,27 **
(0,05)
17. Example: empathic concern
I
Migrant (0/1)
II
III
0.15 *
(0.06)
0.11
(0.07)
0.03
(0.07)
0.12
(0.06)
0.08
(0.06)
CAPI (0/1)
Being religious (0/1)
Unstandardized regression coefficients
Standard errors in parentheses
* p < 0.05
** p < 0.01
0.27 **
(0.05)
25. Questionnaire issues: donations
What are charitable donations in the eyes of
migrants and non-migrants?
Are Zakath and Sadaqah part of it?
Are remittances part of it?
And are donations to organizations part of
Zakath and Sadaqah?
26. Questionnaire issues: volunteering
Area module for volunteering in organizations
– Areas; asked to volunteer; activities; hours;
statements
Informal helping
– Activities; recipients; hours
30. Questionnaire issues: volunteering
What is volunteering in the eyes of migrants
and non-migrants?
Is informal helping part of it?
People may be annoyed by a question like 'Do
you sometimes ask your family for help?'
31. Conclusions
Different sampling strategies...
...leading to possible bias in results
Migrant groups may have different
conceptions of 'donating' and 'volunteering'
Direct, unorganized ways of participating are
more common among migrant groups...
… so measure them
32. Arjen de Wit
Center for Philanthropic Studies
VU University Amsterdam
a.de.wit@vu.nl