In many cases slow learning is caused by factors other than low intellectual ability. Which of the following is not a characteristic of a slow learner?

Abstract thinking is the trait a slow learner lacks; slow learners rely on concrete, experiential reasoning rather than abstraction.

A short span of attention (B) is a genuine trait; slow learners cannot sustain concentration for long.

A limited range of interests (C) is genuine; their curiosity and engagement stay narrow.

A limited vocabulary (D) is genuine; delayed language growth restricts their word-store.

Slow learners usually have an IQ roughly 70 to 90, below average yet above intellectual disability.

They differ from backward children, whose underachievement may also stem from external causes.