Which of the following is concerned with the question of whether a measure of a concept truly represents that concept?

Construct validity concerns whether a measure of a concept truly represents that concept.

It examines how well an instrument reflects the underlying theoretical construct.

Internal validity concerns confidence that the independent variable caused the effect.

External validity concerns whether results generalise beyond the study.

Transferability is the qualitative parallel of external validity across contexts.

Construct validity is assessed through convergent and discriminant evidence.