To determine the degree of linguistic maturity of a child, a series of areas that are usually formally tested in the assessment of language were analyzed. Specifically, an indiviudal test of the assessment of language was applied to a sample of 204 children of Granada (Spain) ranging in age from 2.6 to 6.6 years. This test consists of six areas: comprehension, memory, fluency, vocabulary, knowledge, and judgement and intelligence. A factorial analysis of the data was carried out to check the classification of the above-mentioned areas. It is found that in the three following factors the analyzed variables get saturated: ‘learned behaviors’, ‘behaviors which are being learned’ and