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Calatrava, Maria; de Irala, Jokin; Osorio, Alfonso; Benítez, Edgar; Lopez-del Burgo, Cristina – Educational and Psychological Measurement, 2022
Anonymous questionnaires are frequently used in research with adolescents in order to obtain sincere answers about sensitive topics. Most longitudinal studies include self-generated identification codes (SGICs) to match information. Typical elements include a combination of letters and digits from personal data. However, these data may make the…
Descriptors: Privacy, Questionnaires, Coding, Adolescents
Martin, Michael O., Ed.; Mullis, Ina V. S., Ed. – International Association for the Evaluation of Educational Achievement, 2013
TIMSS (Trends in International Mathematics and Science Study) is an international assessment of mathematics and science at the fourth and eighth grades that has been conducted every four years since 1995, with the most recent assessment in 2011. PIRLS (Progress in International Reading Literacy Study) is an international assessment of reading…
Descriptors: Student Evaluation, Mathematics Achievement, Science Achievement, Grade 4