Really Cool
    Minority Data

Longitudinal Study of the Second Generation in Spain (ILSEG) (ICPSR 36286)

Principal Investigator(s): Portes, Alejandro, Princeton University and University of Miami; Aparicio, Rosa, Instituto Universitario de Investigación Ortega y Gasset; Haller, William, Clemson University; Celaya, Adrienne, University of Miami (Associate Investigator); Flores, Rene, University of Washington (Associate Investigator); Puhrman, Aaron, University of Miami (Associate Investigator); Yiu, Jessica, Princeton University (Associate Investigator); Vickstrom, Erik, U.S. Bureau of the Census (Associate Investigator); Lagae, Bryan, University of Miami (Associate Investigator)


This is the publicly available version of the ILSEG data (ILSEG is the Spanish acronym for Investigación Longitudinal de la Segunda Generación, Longitudinal Study of the Second Generation). Questions address the current situation and plans for the future of young Spaniards who are children of immigrants to Spain, who were living in Madrid and Barcelona and attending secondary school in 2007-2008. <br></br> The longitudinal study of the second Generation (ISLEG in its Spanish initials) represents the first attempt to conduct a large-scale study of the adaptation of children of immigrants to Spanish society over time. To that end, a large and statistically representative sample of children born to foreign parents in Spain or those brought at an early age to the country was identified and interviewed in metropolitan Madrid and Barcelona. In total, almost 7,000 children of immigrants attending basic secondary school in close to 200 educational centers in both cities took part in the study. <br></br> Topics include basic demographics, national origins, Spanish language acquisition, foreign language knowledge and retention, parents' education and employment, respondents' education and aspirations, religion, household arrangements, life experiences, and attitudes about Spanish society. <br></br> Demographic variables include age, sex, birth country, language proficiency (Spanish and Catalan), language spoken in the home, number of siblings, mother's and father's birth country, religion, national identity, parent's sex, parent's marital status, parent's birth year, and the year the parent arrived in Spain.

Access Notes

  • Data in this collection are available only to users at ICPSR member institutions. Please log in so we can determine if you are with a member institution and have access to these data files.

    One or more files in this collection have special restrictions ; consult the restrictions note to learn more.

    One or more files in this study are not available for download due to special restrictions ; consult the restrictions note to learn more. You can apply online for access to the data. A login is required to apply for access.


DS0:  Study-Level Files
DS1:  Public Use Data - Download All Files (34.408 MB)
SAS    SPSS    Stata    R    ASCII    Excel/TSV
ASCII + SAS Setup    SPSS Setup    Stata Setup   
DS2:  Restricted Use Data
No downloadable data files available.

Study Description


Portes, Alejandro, Rosa Aparicio, William Haller, Adrienne Celaya, Rene Flores, Aaron Puhrman, Jessica Yiu, Erik Vickstrom, and Bryan Lagae. Longitudinal Study of the Second Generation in Spain (ILSEG). ICPSR36286-v1. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2016-09-13.

Persistent URL:

Export Citation:

  • RIS (generic format for RefWorks, EndNote, etc.)
  • EndNote XML (EndNote X4.0.1 or higher)

Scope of Study

Subject Terms:    children, generations, immigration, parents, population migration, secondary education

Smallest Geographic Unit:    Zones of Madrid and Barcelona (N, S, E, W and Central)

Geographic Coverage:    Barcelona, Europe, Madrid, Spain

Time Period:   

  • 2007

Date of Collection:   

  • 2007--2008

Unit of Observation:    Individual, Some school-level data is included

Universe:    Children of immigrants in Spain

Data Type(s):    survey data

Data Collection Notes:

Not all the questionnaire items are included in this public release submission. Many of the open-ended items contain too little information to be included. Others presented translation and coding challenges that could not be addressed at this point in time, particularly because of languages (e.g. Catalan, Galician), and non-standard language usages and terminology. We will provide more variables in future releases and more of the open-ended detail for a version in the ILSEG non-curated site.

Variables beginning with the letter p correspond to questions asked of parents.

This study as longitudinal. However, responses are not classified by collection date.


Study Purpose:    The aim of this study is to know more about the youth of foreign origin living today in Spain. This study is important because until now very little is known about the situation and future prospects of these young people.

Study Design:    This release includes the data from wave one and the parental follow-up survey only.The original survey was conducted in 2007-08; four years later, the same sample was traced and re-interviewed either at school, via telephone, or through contact in the social media (Facebook and Tuenti). Through these means, the research team was able to identify and re-interview 73 percent of the original sample for which retrieval information was available. An additional replacement sample of over 1,500 second generation youths of the same average age as the original respondents was interviewed in the same schools in which the original study took place. Finally, and for comparative purposes, a sample of native-parentage Spanish youths was interviewed at the same time.

To supplement the information from immigrant children, the study also conducted a person-to-person survey of 25 percent of their parents. They were interviewed in Spanish or in their native language. The parental survey is representative of the earlier studies sample, including near identical proportions of all foreign nationalities present in the latter.

Sample:    Enrolled students who are children of immigrants in randomly sampled schools in the greater Madrid and Barcelona regions.

Time Method:    Longitudinal

Weight:    Data are self-weighted. Students were selected on the basis of proportional representation of their respective national origins within the respective urban regions.

Mode of Data Collection:    face-to-face interview, on-site questionnaire

Response Rates:    Approximately 100%, with the cooperation of school officials

Presence of Common Scales:    Rosenburg Self-esteem index

Extent of Processing:   ICPSR data undergo a confidentiality review and are altered when necessary to limit the risk of disclosure. ICPSR also routinely creates ready-to-go data files along with setups in the major statistical software formats as well as standard codebooks to accompany the data. In addition to these procedures, ICPSR performed the following processing steps for this data collection:

  • Created variable labels and/or value labels.
  • Performed recodes and/or calculated derived variables.
  • Checked for undocumented or out-of-range codes.


Original ICPSR Release:   2016-09-13

Related Publications



Metadata Exports

If you're looking for collection-level metadata rather than an individual metadata record, please visit our Metadata Records page.

Download Statistics