| Abstract | |
| Survey Number | 1508 |
| Survey Title | National Survey of Social Stratification and Social Mobility, 2015 |
| Depositor | 2015 SSM Survey Management Committee |
| Restriction of Use |
For detailed information, please refer to 'For Data Users' on the SSJDA website.
- Apply to SSJDA. SSJDA's approval is required. |
| Educational Purpose | Available for both research and instructional purposes. |
| Period of Data Use Permission | One year |
| Access to Datasets | Download |
| SSJDA Data Analysis | SSJDA Data Analysis (online data analysis & metadata browsing system) is available for this data. |
| Summary |
The national survey of social stratification and social mobility, also known as “Social Stratification and Social Mobility” (SSM), is one of the most traditional large-scale social surveys in Japan and has been conducted every ten years since the first survey in 1955 (by the Japan Sociological Society). The 2015 survey is the seventh in the series and was conducted by the 2015 SSM Research Group. The primary purpose of this survey is to clarify the changes and actual conditions of social stratification in Japan, focusing on the demographic transformation represented by the rapid aging of the population and the declining birthrate. In addition to raising the upper age limit of the respondents, this survey expands the information on marital behavior and households, which are essential for population change. The survey is divided into two types of questionnaires: an interview questionnaire and a self-administered questionnaire. However, a separate marriage questionnaire is used for some of the respondents. |
| Data Type | quantitative research: micro data |
| Universe | Men and women of Japanese nationality aged 20-79 as of December 31, 2014. |
| Unit of Observation | Individual |
| Sample Size |
Planned sample size: 16,100 Number of selective samples: 15,605 Number of valid responses: 7,817 (response rate 50.1%) |
| Date of Collection |
2015-01-31 ~ 2015-07-26 Primary survey: 2015/1/31-3/22 Secondary survey: 2015/4/4-5/24 Third survey: 2015/6/6-7/26 |
| Time Period |
2015 ~ 2015 |
| Spatial Unit | Nationwide, Japan |
| Sampling Procedure |
Probability: Stratified
Probability: Multistage
Two-stage stratified random sampling Municipalities in Japan are stratified into five strata according to population size, and 805 "basic unit wards" in the census are allocated proportionally. Within the strata, the basic unit districts, the primary sampling units, and individuals, the secondary sampling units, are extracted from the Basic Resident Registers using the systematic sampling method. |
| Mode of Data Collection | Face-to-face interview by surveyor and self-administered survey (drop-off/pick-up method) |
| Investigator |
2015 Social Stratification and Social Mobility Survey Research Group For the 800 sites, Central Research Service Co. was commissioned to conduct the actual survey, while the remaining 5 sites were conducted mainly by graduate student members from the University of Tokyo (2 sites), Kyoto University (2 sites), and Tohoku University (1 site). |
| DOI | 10.34500/SSJDA.1508 |
| Sponsors (Funds) | Grant-in-Aid for Scientific Research (Specially Promoted Research), Ministry of Education, Culture, Sports, Science and Technology |
| Related Publications (by the Investigator) | Refer to the Japanese version for details. |
| Related Publications (based on Secondary Analysis) | List of related publications (based on Secondary Analysis) |
| Documentation |
[ Face-to-face interview ] [ Questionnaire ] [ Self-administered survey ] [ Questionnaire ] [ Separate marriage questionnaire ] [ Questionnaire ] |
| Major Survey Items |
【Face-to-face interview questionnaire】 ●Gender ●Age ●Current occupation (*), working hours, labor union, route to employment ●Job content and income satisfaction ●Work environment ●Employment status ●First job (*), route to employment, the period from graduation to employment, duration of employment, place of residence ●Employment History (*), reason for leaving employment, duration of employment ●Around age 15 Number of siblings, property holdings, number of books in the house, living conditions ●Junior high school (national, public or private) ●Grades in the 3rd year of junior high school, hope to go on to higher education ●Residence at graduation from junior high school ●Schools attended ●High school High school (national, public, and private), department, graduation/withdrawal, percentage of students who went on to college, etc. ●Experience attending a specialized training college or higher Type of school, training status, training period, national/public/private, department, name of school ● Father's job around age 15 of the respondent, father's main job (*) ● Mother's job around age 15 of the respondent Employment status, (*) ● Parents Parents' terminal education record, living or dead, age, year of birth, year of death ●Experience of leaving home Trigger, current situation, duration ●Marital status, age at marriage, work at marriage, age of separation or bereavement ●Spouse Age, terminal education record, how they meet, age of acquaintance ●Spouse's current job, a job at marriage (*) ● Residence Family members living together, relationship, type of residence, size of residence ● Satisfaction with life in general ● Status identification (5 levels, 10 levels) ● The respondents' annual income, sources of income, spouse's annual income, household income 【Separate marriage questionnaire】 ※For those who remarried ●First marriage Age at first marriage, age of separation or bereavement, information on spouse at first marriage (age, occupation type, terminal education record), age of acquaintance, reason for meeting 【Self-administered questionnaire】 ●The current level of happiness ● Ideas about the state of the world ● Attitudes toward gender roles ● Attitudes toward children's education, etc. ● Perceived unfairness ● Ideas about people in the world ● Purchasing behavior Means of shopping, awareness of food products ●Participation in social activities ●Frequency of cultural activities ●Time for household chores and hobbies ●Children Gender, birth year, relationship, residential status, terminal education record ●Monthly expenditure on out-of-school education ●Views on the Social Security system ●Experience attending tutoring school (juku), etc. ●The last school attended ●Sources of income to count on in old age ●Subjective health, mental health ●Lifestyle ●Current employer Benefits (existence and actual status), ratio of non-full-time employees and female employees, prospects for promotion ● Interest in politics, support for political parties, favorability of political parties ● Ideal number of children ● Average cost of living per month ● Ownership of property ● The total amount of assets owned, amount of repayment ● Inheritance/gift from parents, amount of inheritance/gift from parents |
| Date of Release | 2022/09/29 |
| Topics in CESSDA |
Click here for details Equality, inequality and social exclusion |
| Topics in SSJDA | Society/Culture |
| Version | 1 ： 2022-09-29 1.1 ： 2024-01-22 1.2 ： 2024-02-27 |
| Notes for Users |
Added 1:Showa and 2:Heisei to the value labels of the original issue (q1_2_2) in version 1.1. Added weight files in version 1.2. |