PURPOSE: to analyze the cognitive alterations (memory and language) in the patient with illness of Alzheimer in the moderate phase and to verify if the variables: gender, age and education interfere with these abilities. METHODS: an observational study and prospective was carried through with 27 citizens with Alzheimer's disease in the moderate phase, patients of the Center of Regional Rehabilitation of Araraquara (CRRA), with age varying between 60 to 86 years. The test used for the evaluation was the Consortium to Establish a Registry for Alzheimer's Disease (CERAD) that contain some tests of which we select the following ones: Boston nomination test, Memory of list of words, Verbal Fluency, Calling up list of words and Recognition of list of words. RESULTS: the answers obtained in this research allowed to observe that there was no significant difference in the variable gender and age; however, in the education variable, we got a significant difference in the Boston nomination subtest. CONCLUSION: the sample of the citizens of this research did not get significant difference in the variable gender and age. However, in the education variable, the subjects with higher educational degree had better performance in the language test related to the Boston nomination subtest.