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research data

The LERN partners grant access to their research data. This page provides you with a list of released data records.

Acquisition and Application of Occupational Qualifications 1998/99 (Qualification and Course of Employment)

Description of work responsibilities, working conditions, job stress and possible changes of the situation at work. Occupation education and further education as well as individual mobility conduct ( more )

Allocation of chances through training (longitudinal survey 1971-2002)

Description and analysis of the effects of social background on educational processes, their cumulation in the further course of life and their influence on career opportunities. ( more )

Assessment of Student Achievements in German and English as a Foreign Language (DESI) - test tasks and questionnaires

DESI was commissioned by the ministers of culture and education of the German federal states in order to measure the linguistic achievement of 9th-grade students attending various school types in the domains of German and English. DESI covers a broad spectrum of linguistic skills and provides information on the quality of teaching and learning in the domains of German and English. ( more )

Assessment of Student Achievements in German and English as a Foreign Language (DESI) - video study

The DESI study assessed ninth grade students’ language achievements in German and English as a foreign language. The study was commissioned by the Standing Conference of Ministers of Cultural Affairs of federal states in Germany in 2001 - representing a national study of student achievement, supplementary to PISA. Under the auspices of the German Institute for International Educational Research (DIPF), a consortium of educational researchers and experts from subject didactics developed tests for the assessment of competencies in German and English as a first foreign language, guided by the state curricula for school year 9. ( more )

Audiovisual recordings of lessons taught in the GDR

In the GDR lessons were recorded on one-inch video cassettes and VHS tapes since the early 1970s, for teacher training and research purposes. Roughly 200 of such recordings are still available today, originating from the Humboldt University in East Berlin, the Academy of Pedagogical Science (APW) in Berlin, and the Pedagogical Universities in Potsdam and Dresden. These historical sources span a broad scope of subjects, ranging from lessons in German, Mathematics, History and Civic Education to the sciences. It is thus possible to gain concrete insights into lessons taught in the GDR. ( more )

Children of Immigrants Longitudinal Survey in Four European Countries (CILS4EU) - Full version. Data file for on-site use

This is the first wave of panel survey of adolescents designed to study the complex causal mechanism of structural, social, and cultural integration of populations with migration experience. The data include surveys of students, parents, and teachers. It enables studying processes of intergenerational transmission and integration. The survey covers topics of (1) cognitive-cultural integration (including language proficiency tests), (2) structural integration, (3) social integration, and (4) emotional-cultural integration. In addition there is detailed information about migration experience and demographics. ( more )

Children of Immigrants Longitudinal Survey in Four European Countries (CILS4EU) - Reduced version. Reduced data file for download and off-site use

This is the first wave of panel survey of adolescents designed to study the complex causal mechanism of structural, social, and cultural integration of populations with migration experience. The data include surveys of students, parents, and teachers. It enables studying processes of intergenerational transmission and integration. The survey covers topics of (1) cognitive-cultural integration (including language proficiency tests), (2) structural integration, (3) social integration, and (4) emotional-cultural integration. In addition there is detailed information about migration experience and demographics. ( more )

Children of Immigrants Longitudinal Survey in Four European Countries - Germany (CILS4EU-DE) - reduced version. Reduced data file for download and off-site use

This project focuses on the intergenerational integration of the children of immigrants in four selected European countries: Germany, the Netherlands, Sweden, and the United Kingdom. Initially funded within the NORFACE programme, it is the first comprehensive and fully-standardized panel study on this topic in Europe. Between 2010 and 2013, three waves of data collection were conducted with children of immigrants and their majority peers starting at age 14, thus covering a crucial, formative period of their lives. Furthermore, parental as well as teachers’ surveys were realised during the first wave of data collection. ( more )

Cumulative Assessment Study on Mathematics in Rhineland-Palatinate: Competencies, Classroom Teaching Features, School Context (MARKUS) - context and background features

MARKUS is an assessment study within the framework of school-quality monitoring in the German Land of Rhineland-Palatinate. It encompassed a survey of the mathematics performance of grade 8 students and the compilation of features related to learning and classroom teaching as well as to factors of situational context inside and outside school. Only the data on context and background features are available. ( more )

Education, Training, and Occupation: Life Courses of the 1964 and 1971 Birth Cohorts in West Germany (Life History Study LV-West 64/71)

The survey data contain information from over 2,909 life courses and allow detailed longitudinal analyses particularly of training behavior, labor market entry and occupational careers as well as processes of family formation in the 1980s and 1990s. ( more )

Educational processes, competence development and selection decisions in preschool and school age (BiKS-3-10)

The first longitudinal study (BiKS-3-10) of the BiKS-project conducted assessments of language and cognitive development of the selected children in kindergarten. The study focused on the development of school achievement depending on structural, attitudinal and procedural aspects of support by the family, kindergarten and school as well as on the formation of school entry decisions. ( more )

Educational processes, competence development and selection decisions in preschool and school age (BiKS-8-14)

The focus of the second longitudinal study (BiKS-8-14) was on the different development and decision patterns of children before and after the transition to different school types at secondary level (Hauptschule, Realschule, Gymnasium). ( more )

Educational Science knowledge and acquisition of professional competencies of prospective teachers (BilWiss)

The starting hypothesis of the project was: Educational science contents and contexts outline a conceptual framework that teachers need in order to interpret and reflect on class and school events adequately and as such use it for their own competence development. On the basis of a prior educational scientific topic collection, a measurement instrument, that objectively and directly captures the conceptual-analytical knowledge of prospective teachers, was developed. ( more )

German Socio-Economic Panel (SOEP)

The SOEP started in 1984 as a longitudinal survey of private households in the Federal Republic of Germany. The central aim then and now is to collect representative micro-data to measure stability and change in living conditions by following a micro-economic approach enriched with variables from sociology, psychology and political science . Therefore the central survey instruments are a houeshold questionnaire, which is responded by the head of a household and an individual questionnaire, which each household member is intended to answer. ( more )

Gymnasiasten-Studien

The impact of social-structural determinants on school success ( more )

HIS-Graduate Panel 1997

Panel-Survey of higher education graduates regarding the following topics: Studies, study experiences, study quality Transition from higher education to work Employment and job satisfaction Further academic and vocational training and demands Living conditions and family ( more )

HIS-Graduate Panel 2001 (CUF)

Panel-Survey of higher education graduates regarding the following topics: Studies, study experiences, study quality Transition from higher education to work Employment and job satisfaction Further academic and vocational training and demands Living conditions and family ( more )

HIS-Graduate Panel 2001 (SUF)

Panel-Survey of higher education graduates regarding the following topics: Studies, study experiences, study quality Transition from higher education to work Employment and job satisfaction Further academic and vocational training and demands Living conditions and family ( more )

IAB Establishment Panel

The IAB Establishment Panel is a representative employer survey of employment parameters at individual establishments. It is not only aimed at taking stock of structures, situations and the background to problems in the establishments but also at assessing morale and the expectations for the future currently held by the establishments. The survey also provides information on apprenticeship training and further training activities. ( more )

ifo Prussian Economic History Database (iPEHD)

The ifo Prussian Economic History Database (iPEHD) is a county-level database covering a rich collection of variables for all counties of Prussia during the 19th century. The Royal Prussian Statistical Office collected these data in a number of censuses over the period 1816-1901, with much county-level information surviving in the archives. These data provide a unique treasure for unprecedented micro-regional empirical research in economic history, analyzing the importance of such factors as education, religion, fertility, and many others for the economic development of Prussia in the 19th century. ( more )

Immigrant children and youths in the German and Israeli educational systems (first transition)

This project studies the success of migrant children and youths in the educational systems of Israel and Germany. Education is considered a key resource for social integration into the receiving country. In both countries, educational attainment is closely related to labour market outcomes and general future life opportunities. However, there are considerable inequalities in the educational attainment of immigrants compared to natives. This project investigates the reasons and mechanisms that lead to said inequities (e.g. educational achievement). In particular, educational transitions (e.g. ( more )

Immigrant children and youths in the German and Israeli educational systems (second transition)

This project studies the success of migrant children and youths in the educational systems of Israel and Germany. Education is considered a key resource for social integration into the receiving country. In both countries, educational attainment is closely related to labour market outcomes and general future life opportunities. However, there are considerable inequalities in the educational attainment of immigrants compared to natives. This project investigates the reasons and mechanisms that lead to said inequities (e.g. educational achievement). In particular, educational transitions (e.g. ( more )

Immigrant children and youths in the German and Israeli educational systems (third transition)

This project studies the success of migrant children and youths in the educational systems of Israel and Germany. Education is considered a key resource for social integration into the receiving country. In both countries, educational attainment is closely related to labour market outcomes and general future life opportunities. However, there are considerable inequalities in the educational attainment of immigrants compared to natives. This project investigates the reasons and mechanisms that lead to said inequities (e.g. educational achievement). In particular, educational transitions (e.g. ( more )

Interval Study Capabilities and Courses of Occupation 1985-1995, 7th Wave 1992

Analysis of choice of occupation of young people and transfers into training and employment ( more )

Interval Study Risk 1986-1995 - Leipzig Schoolchildren Study, 7th Wave 1992

Coping with development demands, risk situations and risk behavior of young people in the new states ( more )

leo. - Level-One Study (Level One)

The Level One Study is analyzing the level of functional illiteracy. Topics: Learning at an adult age. Occupational status. Characteristics of main professional occupation. Participation in regular education (Part 1: school, part 2: professional training). Educational background. Use of information and communication technology. Language skills. Current life situation and coping with life problem. leo. was conducted once parallel to the cross-section Adult Education Survey (AES) in 2010. No repetition of this addition is planned. ( more )

Linked Employer-Employee Data from the IAB (LIAB)

The Linked Employer-Employee Data from the IAB (LIAB) allow for simultaneous analysis of the supply and demand sides of the German labour market. For this purpose, the IAB Establishment Panel data are matched with individual data from the IAB, thus providing a linked dataset which comprises data from a representative annual establishment survey as well as personal data generated in labour administration and social security data processing. LIAB cross-sectional model: The cross-sectional LIAB model contains both information on individuals and data from the IAB Establishment Panel matched on a specific reference date (30th June). ( more )

National Assessment Study / language skills 2008/2009 (IQB-LV 2008-9)

The IQB Ländervergleich 2008/2009 (National Assessment Study 2008/2009) assessed the language skills of 9th grade students from different school types, covering the subjects German, English, and French. ( more )

National Assessment Study in Mathematics and Science 2012 (IQB-LV 2012)

The National Assessment Study in Mathematics and Science 2012 (IQB Ländervergleich Mathematik und Naturwissenschaften 2012) is a nationwide large-scale assessment. The study was designed to assess students’ achievement in mathematics, biology, chemistry and physics and to evaluate to which extent they meet educational standards in the German Länder. ( more )

National Assessment Study in Primary Schools 2011 (IQB-LV 2011)

The national assessment study in primary schools 2011 (IQB Ländervergleich 2011 Primarstufe) was designed to assess students’ school achievement and to evaluate to which extent educational standards are met in the German Länder. ( more )

National Educational Panel Study (NEPS): Additional Study Baden-Wuerttemberg

In many Länder of the German Federal Republic, changes concerning the structure and contents of the Gymnasiale Oberstufe (final years in upper secondary education qualifying for higher education) are taking place. For example, the time spent in Gymnasium (secondary school qualifying for higher education) was cut from 9 years (G9) down to 8 years (G8). The reduction from 9 to 8 years combined with a reorientation of the study schedule was also implemented in Baden-Wuerttemberg in 2004. This supplementary study of the NEPS aimed to study particularly those changes and to record its effects. ( more )

National Educational Panel Study (NEPS): Additional Study Thuringia (TH)

Many German Federal States are currently reforming the curriculum and the organization of the Gymnasiale Oberstufe (final years in upper secondary education qualifying for higher education). In general, these changes aim towards a stronger emphasis on general education and a restriction of the differentiation (consolidation) in the Leistungskurs-Grundkurs-System (system of advanced and basic courses) during the last two years of Gymnasiale Oberstufe. ( more )

National Educational Panel Study (NEPS): Starting Cohort 1 – Early Childhood (SC1)

The aim of this substudy is to generate a longitudinal cohort starting with infants in their first year of life. The families are visited in their homes. Substantial, theory-driven surveys are conducted with the children (as target persons) and their parents as well as caregivers outside the home (group managers of day-care centers or Kindergartens, childminders). These data will enable scientists to describe and analyze educational processes and trajectories as well as competence development. ( more )

National Educational Panel Study (NEPS): Starting Cohort 2 — Kindergarten (SC2)

The aim of this study is to collect longitudinal data on a starting sample of 4-year-olds in Kindergarten. Comprehensive theory-based surveys are carried out on children (as target persons), their parents, and educators, as well as heads of the Kindergartens attended, and, later on, the class teachers and elementary school principals. These data will enable us to describe and analyze educational processes, educational trajectories, and the development of competencies. ( more )

National Educational Panel Study (NEPS): Starting Cohort 3—Grade 5 (SC3)

The lower secondary level plays a connecting role between elementary school and the general or vocational upper secondary level (or directly entering the job market). Nevertheless, important questions have not been answered clearly and conclusively yet due to the lack of appropriate data. This pertains, for example, to the chosen type of school, to switches to another type of school, or to grade repetition, but also to the central issue of educational paths through lower secondary level and the transition into upper secondary level. ( more )

National Educational Panel Study (NEPS): Starting Cohort 4—Grade 9 (SC4)

The lower secondary level plays a connecting role between elementary school and the general or vocational upper secondary level (or directly entering the job market). Nevertheless, important questions have not been answered clearly and conclusively yet due to the lack of appropriate data. This pertains, for example, to the chosen type of school, to switches to another type of school, or to grade repetition, but also to the central issue of educational paths through lower secondary level and the transition to upper secondary level. ( more )

National Educational Panel Study (NEPS): Starting Cohort 5 - First-Year Students (SC5)

German universities face a number of challenges and developments that raise new issues for research. To name but a few, there is the introduction of a two-stage structure in university education, a growing demand for outcome orientation, the evolution of higher education institutions towards becoming institutions for lifelong learning, an increase of (international) competitiveness, and the emerging shortage of highly qualified professionals. At the same time, key issues of the last decades are still current, such as student dropout, social selectivity in higher education entrance, and the relationship between higher education and working life. ( more )

National Educational Panel Study (NEPS): Starting Cohort 6—Adults (SC6)

As part of this substudy, data on educational and professional careers as well as on competence acquisition across adult life courses are being collected.In order to be able to study adult education, the entire spectrum of educational activities and learning processes (formal, nonformal, and informal), and decisions resulting in their participation, as well as the previous life course of interviewees (especially the course of education and occupation, relationships, and children) are recorded in detail. ( more )

Panel “WeLL” – Employee Survey for the Project “Further Training as a Part of Lifelong Learning”

As part of the project “Further Training as a Part of Lifelong Learning” (WeLL) an extensive innovative dataset is being established which contains information about further vocational training from employers and employees. In this survey the further training activities and the employment biographies of the respondents from the beginning of 2006 to late 2010 were recorded in detail. In addition, socio-demographic characteristics and information about income, household, job satisfaction and expectations regarding the future were collected. ( more )

PISA-I-Plus 2003, 2004

PISA-I-Plus is a national assessment scheme extending the cross-sectional design of the international PISA 2003 study to include an additional time of measurement, one year after the initial assessment. The study aims to describe students' development in the fields of mathematics and science in the course of one school year. Additionally, personal characteristics, family background and learning environment were considered as factors influencing learning progress during the school year. ( more )

Programme for International Student Assessment 2000 (PISA 2000)

Starting in the year 2000 and carried out at three-year intervals, the PISA study assessed the performance of 15-year-old students in the domains of reading, mathematics and science. It also looked at cross-curricular competences such as prerequisites for self-regulated learning as well as aspects of students' ability to cooperate and communicate. The study operates within the framework of an internationally agreed concept of "literacy". Rather than focusing on the assessment of students' factual knowledge, PISA evaluates the basic knowledge and skills required to participate in social, economic and political life. ( more )

Programme for International Student Assessment 2003 (PISA 2003)

PISA aims to measure how well students at age 15 are prepared to meet the challenges of today's knowledge societies and lifelong learning. The results obtained in the key competency areas of reading, basic education in mathematics and science, and problem-solving allow conclusions to be drawn about strengths and weaknesses of the education systems of participating countries. As PISA is carried out at three-year intervals, participating countries receive important information allowing them to gauge to what extent the quality of their educational outcomes has changed. ( more )

Programme for International Student Assessment 2006 (PISA 2006)

The “Programme for International Student Assessment” enters the third round of surveys with PISA 2006. As before the domains of reading, mathematics, and science were assessed. In line with the rotating focus, PISA 2006 concentrated on the assessment of scientific subjects. As previously, the study aimed to assess how well fifteen-year-old students are prepared for the demands of the knowledge society and lifelong learning. At the FDZ of the IQB are available the data of PISA-I and PISA-E as well as a sample of 9th graders. ( more )

Programme for International Student Assessment 2009 (PISA 2009)

As previous PISA waves, PISA 2009 aimed to measure how well students at age 15 are prepared to meet the challenges of today's knowledge societies and lifelong learning. Therefore, the PISA test tasks are based on knowledge and skills required for the application and acquisition of knowledge in private and professional daily life rather than on specific curricula. As PISA 2000, PISA 2003 and PISA 2006, the PISA 2009 study assessed students' performance in the domains of reading, mathematics and science. The main focus of PISA 2009 was as in PISA 2000, on reading comprehension. ( more )

Programme for International Student Assessment 2012 (PISA 2012)

PISA aims to measure how well students at age 15 are prepared to meet the challenges of today's knowledge societies and lifelong learning. Thus, the PISA test items are not directly linked to national school curricula but are designed to assess the skills and competences required for the acquisition of knowledge and its application to real-life situations. In this study, as in the previous PISA surveys, students were tested in the domains of reading literacy, mathematical literacy, scientific literacy and problem solving. In PISA 2012 the focus was on mathematical literacy for the second time since 2003. ( more )

Programme for the International Assessment of Adult Competencies (PIAAC), Germany - Reduced Version

PIAAC aims at capturing competencies of adults in Germany. This data contain competency scores (plausible values) for each participant in the domains literacy, numeracy, problem solving in technology-rich environments, as well as their background information. ( more )

Progress in International Reading Literacy Study (PIRLS 2001)

In 2001 the reading comprehension of primary school students at the end of grade 4 was assessed in international comparison for the first time, using a large sample representative for Germany. In addition, the national supplementary study assessed their performance in mathematics and the natural sciences. Thus, the PIRLS 2001 results provided a first detailed view of strengths and weaknesses of the German educational system at the primary level. PIRLS's design is based on a concept of basic "literacy" (students' capacity to apply knowledge and skills in key subject areas), with special emphasis on the cultural significance of educational contents. ( more )

Progress in International Reading Literacy Study (PIRLS 2006)

IGLU 2006 (international designation: PIRLS) was the second survey wave after IGLU 2001, in which 35 nations participated worldwide. Moreover, IGLU 2006 included a national expansion study (IGLU-E), in which all 16 German federal states were involved. As also in 2001, the focal point of the study was the reading literacy of pupils at the end of fourth grade. Additional data were collected relating to their intention and motivation to read, their reading self-concept as well as their reading behaviour. Moreover, pupils were asked about their educational, familial and political framework conditions. ( more )

Progress in International Reading Literary Study 2011 (IGLU 2011)

PIRLS 2011 is a by the IEA (International Association for the Evaluation of Educational Achievement) initiated student assessment study which with the survey of 2011 after 2001 and 2006 was carried out for the third time. With PIRLS the reading comprehension of students at the end of fourth grade was internationally comparative examined with the objective to obtain reliable information about the knowledge and skill level of the students in the participating countries. In addition to reading literacy, the areas of reading intention, of reading comprehension as well as reading habits and attitudes towards reading were covered. ( more )

Qualification and Course of Employment (BIBB/IAB- and BIBB/BAuA-surveys)

The group Qualification and Course of Employment” is made up of studies, which deal with the description of work responsibilities, working conditions, job stress and possible changes of the situation at work as well as occupation education and further education. ( more )

Quality assessment of mathematics instruction at schools (QuaSUM)

The main concern of this study was to investigate the learning outcomes in mathematics at the end of grades 5 and 9 and to analyse the contextual factors both inside and outside school that can be responsible for disparities in learning outcomes between different school forms or course levels, respectively, or else between schools of the same school type, and between grades or courses at the same school. ( more )

Quality of Instruction and Mathematical Understanding in Different Cultures of Instruction (Pythagoras)

Funded by the German Research Association (DFG), the German Institute for International Educational Research (DIPF) and Pedagogical University of Zurich jointly conducted the “Quality of Instruction and Mathematical Understanding in Different Cultures of Instruction”. The idea for this study emerged from TIMSS and PISA. These studies delivered important information about strengths and weaknesses of education systems in an international comparison. To reach more differentiated insights into the relevance of concrete instruction for the development of students, assessments of student achievement need to be complemented with micro-genetic studies. ( more )

Reporting System for Further Education; Adult Education Survey

The Reporting System for Further Education and the Adult Education Survey ask for further and continued training. Topic of the surveys is lifelong learning. Question items are among others educational achievements and occupational status, general and professional training, formal and informal learning. Until 2007 the Reporting System for Further Education offered information on courses for further training and education of German adults. Since 2007 this reporting is carried out as part of the international Adult Education Survey (AES). In order to adjust the two concepts a ‚double‘ survey was conducted in 2007 (BSW-AES 2007). ( more )

Study on the development of all-day schools (StEG)

In 2005, 2007 and 2009 a large number of all-day schools were surveyed as part of the multi-perspective study StEG. ( more )

Survey of Reading and Mathematics Comprehension: Development from Grades 4 to 6 in Berlin (ELEMENT)

The longitudinal study ELEMENT aimed to investigate students' learning background and their learning progress in the transition period from primary to secondary education at Berlin's primary and middle schools and grammar schools grade 5-plus (the latter are comparatively rare in Berlin, where primary school normally covers grades 1-6, and grammar school starts from grade 7). It focused on student performance in German and mathematics, with supplementary tests in English at the third measuring time. ( more )

Technology-Oriented Assessment of Professional Competencies in Nursing (TEMA)

This research project had the objective of developing and testing a technology-oriented instrument for the assessment of vocational competencies in elderly care. The instrument was designed to combine practical usability and scientific soundness. The aim was to develop an empirically tested competence model and assessment instrument to enable valid and internationally compatible measurement of vocational competencies using new technology-based assessment methods under application of probabilistic test theory. ( more )

TOSCA-LAU (Aspects of Learning Background and learning Development – Grade 13 as well as Transformation of the Secondary School System and Academic Careers)

The focus of the TOSCA-LAU 13 study was the level of learning and the suitability and affinity for university in the upper secondary school in Hamburg. This is the last survey wave of the longitudinal study LAU, which largely used instruments from the longitudinal study LAU. ( more )

Trends in International Mathematics and Science Study 2007 (TIMSS 2007)

TIMSS 2007 is an international educational large scale assessment. The study was designed to assess the academic skills and abilities of grade 4 mathematics and science students. In addition to data on students' achievement, the results of background questionnaires given to students, teachers and principals were considered, thus enabling researchers to investigate links between mathematics and science achievement on the one hand and class and school characteristics on the other. ( more )

Trends in International Mathematics and Science Study 2011 (TIMSS 2011)

TIMSS 2011 is an international educational large scale student assessment. The investigation is focused on mathematical and scientific skills of primary school children in Germany in an international comparison. It is carried out every four years. TIMSS examined student performance in math and science area, taking account of curricular requirements and other key conditions of school learning environment. ( more )

VERA – Good instructional practice

The VERA study on good instructional practice targeted the analysis of conditions that are crucial to learning outcomes at primary school, in the subjects of German and Mathematics. A target criterion was given by the longitudinal assessment of change in subject-related achievement across a school year, while other criteria were also taken into perspective (e.g. interest, enjoyment of learning). Conditioning factors concern individual student characteristics (prior knowledge, motivation, social class etc.), school and classroom characteristics as well as instructional characteristics, particularly instructional quality. ( more )

Voucher recipients and eligible employees of the program „Bildungsprämie“

The data was collected to evaluate the effectiveness of the federal voucher program “Bildungsprämie” that reduces training costs for low- and medium-income workers. It covers individuals receiving a training voucher in 2010, employees potentially eligible for the program and employees potentially not eligible. The survey covers the following aspects: a) Use of the voucher, implementation of the program, returns to training, b) previous participation in training, c) employment and changes in employment, d) occupation, tasks and responsibilities, e) job satisfaction. ( more )

Working and Learning in a Changing World (ALWA)

Working and Learning in a Changing World (ALWA) derived from its German name ‘Arbeiten und Lernen im Wandel’ for short, is a data set which was collected on behalf of the IAB within the project ‘Qualifications, Competencies and Working Lives’. The ALWA-data contain information about more than 10.400 life histories and allows detailed longitudinal analysis in particular about schooling and training decisions, labour market re-entries and labour market behaviour as well as about processes of family formation and regional mobility. ( more )