The UIS Glossary includes statistical terms related to education, science, technology and innovation, culture, and communication & information . Some of the entries contain translations in one or more of the following languages: Arabic, English, French and Spanish. Other entries provide more detailed information, such as definitions, calculation formulas for indicators and sources. Indicators are marked with an asterisk (*).

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Hypothesised unobservable or mental trait that is used to explain individuals’ performance on an assessment. It is only measured trough observations or tasks performances from which the level of the test taker is inferred. Constructs cannot necessarily be directly observed or measured.

Construit ou trait

Caractéristique hypothétique non observable ou mentale qui est utilisée afin d’expliquer les résultats d’un individu à une évaluation. Il est mesuré uniquement au travers de résultats d’observations ou de tâches desquelles on déduit le niveau de la personne évaluée. Les construits ne peuvent pas être observés ou mesurés directement.


Característica hipotética no observable o rasgo mental utilizado para explicar el desempeño de una persona en una evaluación. Se mide exclusivamente a través de observaciones o desempeño en tareas de las cuales se puede inferir el nivel del participante. Los constructos no pueden ser observados o medidos en forma directa.