German Internet Panel, Wave 25 - Core Study (September 2016)

The German Internet Panel (GIP) is an infrastructure project. The GIP serves to collect data about individual attitudes and preferences which are relevant for political and economic decision-making processes.

The questionnaire contains numerous experimental variations in the survey instruments and an experiment which is identical across all questionnaires. For more information see the study documentation.

Topics: verification of first name, last name, sex, year of birth, mobile phone number and landline phone number; corrections; German citizenship; marital status; number of household members (household size); age and sex of up to 6 household members; relationship to each household member; principal residence; highest educational degree, highest professional degree.

Professional situation: employment status or other activities; main employment status; previous employment status; occupational status; time limit employment; previous occupational status; previous time limit employment; economic sector; religion; religiousness; computer usage besides study; internet usage; daily internet usage; satisfaction with family, leisure time, financial situation, and work.

Social activity: memberships (culture, environment, social cause, religion, youth organisation, civil action, professional, union, political party, other).

Vote at last election; Sonntagsfrage; left-right self-placement; party identification.

Economic situation: personal income (categories); number of income contributing persons; household income (categories); living space; number of rooms; property: number of houses / flats; number of cars; savings account, building loan contract, life insurance, fixed-interest securities, other securities, company assets, no investments); revenue investments.

Additionally coded was: unique ID, GIP; household identifier and person identifier; date of the interview; online equipment at home; assignment to experimental groups; survey evaluation; assessment of the survey in total.

Assigned variables: sex; year of birth (categories); highest educational degree; highest professional degree; marital status; number of household members (household size); employment status; residence state; year of recruitment; German citizenship; private internet usage.