Abstract
In a group of 35 language impaired preschool children, we found a relatively high correlation (r =. 69) between the tri-level conceptual hierarchy represented in the Ege test (Språklig tests 1) and verbal IQ as measured by the WPPSI (the Wechsler Preschool and Primary Scale of Intelligence, Wechsler, 1967). It is argued that acquisition of conceptual hierarchies as assessed by the Ege test, is based on an underlying ability that might be referred to as verbal declarative ability. This kind of ability is to be contrasted with verbal procedural ability; i.e., the ability to carry out verbal procedures. In the work with language impaired children both types of abilities ought to be assessed.