Longitudinal Study of the Second Generation in Spain (ILSEG), Wave 2

Combined Longitudinal Study of the Second Generation in Spain data set, Waves 1 and 2. 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 situations 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 and the 2011-2012 follow up). <br><br> The longitudinal study of the second Generation (ILSEG 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 for wave 1. 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. Because of sample attrition, wave 2 introduced a replacement sample. Additionally, a native born sample of children of Spaniards was also included to enable comparisons between native and immigrant-origin populations of the same age cohort.<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> 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.<br><br>

西班牙第二代综合纵向研究数据集（第一波与第二波）。本数据集为ILSEG的公开版本——ILSEG是西班牙语*Investigación Longitudinal de la Segunda Generación*（第二代纵向研究）的首字母缩写。调研内容围绕2007-2008年就读于马德里与巴塞罗那中学、身为西班牙移民子女的青年群体的生存现状与未来规划展开，并于2011-2012年开展追踪随访。

第二代纵向研究（ILSEG）是首次针对移民子女融入西班牙社会的长期大规模研究。研究首先在马德里与巴塞罗那都会区，选取具有统计代表性的大样本——包括在西班牙出生的外籍父母子女，以及幼年移居西班牙的移民群体——开展第一波访谈。两市近200所教育机构中，共有近7000名就读于基础中等教育阶段的移民子女参与首轮研究。受样本损耗影响，第二波研究补充了替换样本。此外，研究还纳入了西班牙本土出生的青少年样本，以实现同年龄队列中本土群体与移民后代群体的对比分析。

调研主题涵盖基础人口统计学信息、族裔出身、西班牙语习得情况、外语知识掌握与留存状况、父母的教育与就业情况、受访者自身的教育经历与抱负、宗教信仰、家庭结构、人生经历，以及对西班牙社会的态度。

人口统计学变量包括年龄、性别、出生国家、语言能力（language proficiency），具体涵盖西班牙语与加泰罗尼亚语熟练度、家庭使用语言、兄弟姐妹数量、父母双方的出生国家、宗教信仰、民族身份、父母性别、父母婚姻状况、父母出生年份，以及父母抵达西班牙的年份。