Assertion: Arthur Jensen's structure-of-intellect model  and J.P. Guilford's hierarchical model of intelligence are two different approaches to understanding intelligence.

Reasoning: While Arthur Jensen's model emphasizes the hierarchical nature of intelligence with two levels, associative learning and cognitive competence, J.P. Guilford's model focuses on classifying intellectual traits based on three dimensions: operations, contents, and products.

The assertion is false, but the reasoning is true.

Arthur Jensen's hierarchical model of intelligence and J.P. Guilford's structure-of-intellect model are two different approaches to understanding intelligence.