University of Tokyo

Abstract
Survey Number 0868
Survey Title Nationwide Personal Network Survey, 2005
Depositor Itaru Ishiguro
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Period of Data Use Permission One year
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Summary This survey was conducted to examine regional differences, particularly differences due to level of urbanism, in personal networks, group participation, and social attitudes. It is a personal network survey combining the two methods of name generation and snowball sampling (see the “Mode of Data Collection”) that allows an appreciation of the main respondents’ social environment, leading to an examination of the relationships between social environment and social attitudes.
Data Type quantitative research
quantitative research: micro data
Universe Individual men and women aged 25 to 74 years living in Japan except remote islands
Unit of Observation Individual
Sample Size Main respondents: 1,445 people

The alters (people who main respondents often talk to) are as follows.
- First alter: 350 people
- Second alter: 230 people
- Third alter: 176 people
- Fourth alter: 135 people
Date of Collection 2005/03/05–2005/03/29
Time Period
Spatial Unit Japan except remote islands
Sampling Procedure Stratified sampling was used.
As this survey aims to compare differences due to level of urbanism, respondents in rural areas (as of 2004) have been oversampled relative to the population ratio by stratifying the samples.
Mode of Data Collection The survey was conducted by the following steps.
A. Targets sampled by stratified random sampling (“main respondents”) were requested to take a self-administered survey (placement method).
B. Main respondents were asked to nominate up to four “people they often talk to (alters)” (name generation).
C. Main respondents were asked to forward questionnaires to the nominated “people they often talk to (alters)” (snowball sampling). Surveys of alters were conducted as a mail survey.
Investigator Itaru Ishiguro, Ryuhei Tsuji, Sugano Tsuyoshi
DOI
Sponsors (Funds) The Japan Society for the Promotion of Science Grant-in-Aid for Scientific Research, Grant-in-Aid for Young Scientists (A) (Principal investigator: Itaru Ishiguro, project number: 90333707)
Related Publications (by the Investigator) “The effect of urbanism on kin and friendship network in Japanese context,” Studies in the Humanities: Social Sciences (Hirosaki University Faculty of Humanities and Social Sciences), no. 23, 2010, Ishiguro Itaru

“Attitude homophily and relational selectability: an analysis of dyadic data,” Japanese Journal of Social Psychology, vol. 27, 2011, Ishiguro Itaru

“A quantile regression analysis of acquaintance volume,” Sociological Theory and Methods, no. 50, 2011, Ishiguro Itaru

“Two ways to overcome social uncertainty in social support networks: A test of the emancipation theory of trust by comparing kin/non-kin relationships,” Japanese Psychological Research 55(1), 2013, Ishiguro, I. & Okamoto, Y.
Related Publications (based on Secondary Analysis) List of related publications (based on Secondary Analysis)
Documentation [Questionnaire]
Major Survey Items *The questionnaires consist of two types, a “main questionnaire” (for the main respondent) and an “other questionnaire” (for the alter). The majority of the survey items are common to both, but some are included only in one questionnaire as shown below.

(1) Face items:
Gender, month and year of birth, highest level of educational attainment, years at residence, occupation, income, health condition, level of satisfaction with life
[Main questionnaire only] Marital status, presence of children/number/youngest child’s age, household family members

(2) Media/information device usage:
Time spent watching television news, subscribed newspapers, time spent reading newspapers
[Main questionnaire only] news programs that respondent watches, attention to newspaper articles on regional matters, calls/registered numbers on mobile phone/PHS, email usage on mobile phone/computer/PHS

(3) Thoughts about politics and social issues:
What respondent is careful about in preventing crime, concerns about public safety, experiences of respondent and those around them of criminal damage, thoughts about public safety/crime, presence of crow-and-trash problems/response measures, opinion on trash problems, thoughts about municipality mergers, political party supported, approval of Koizumi Cabinet (at the time), thoughts about politics, whether it is desirable to have the same opinion as others on politics, image of class strata in general, respondent’s position in the class strata

(4) Personal relationships and thoughts about them:
Exchanging new year’s cards, number of acquaintances (by family name), occupation types of friends/acquaintances/relatives that respondent interacts with, acquaintances’ place of residence, respondent’s personal relationships, personal relationships between residents in the area of residence, presence of/number of/continuation of relationships with people respondent became acquainted with in the past one year, number of strangers that respondent sees per day, groups respondent participates in, things that apply to interpersonal relationships, thoughts of “the person in the street” about personal relationships

(5) Thoughts about and approaches to things:
Ways of doing things/thoughts about things, thoughts about joint work
[Main questionnaire only] self-evaluation

(6) Relationship between main respondent and alter:
Vertical relationship, common acquaintances, usual topics for discussion, what the other knows much about, things that apply to the two people’s relationship, presence of dissatisfaction with something about the other, whether respondent thinks the other would agree or disagree on various problems/ideas, guessing the political party that the other supports, past exchanges between the two people about politics or elections
[Main questionnaire only] Alter’s attributes (relation, gender, period since respondent has first met the person, place of residence), whether alters know each other
[Other questionnaire only] how alter met the main respondent

*For details of survey items, please refer to the questionnaire.
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