A functional analysis and treatment of the irrational and rational statements of an elderly woman with Alzheimer's disease

Abstract

Speech problems are a hallmark of Alzheimer's disease. Although often attributed to neurological damage common to the disease speech problems have been successfully treated through the use of behavior analytic techniques. This study was a replication and extension of that line of research. The participant in this study was an elderly woman diagnosed with Alzheimer's who was referred for services due to frequent irrational statements and infrequent rational statements. Both standard functional analysis and modified functional analysis conditions were conducted. It appeared the irrational statements were controlled by social reinforcement. Several treatment packages consisting of differential reinforcement of incompatible behaviors and extinction components were implemented in an ABCDEAE treatment design. Results of the study suggest the intervention successfully increased rational statements but had no effect on irrational statements. These results indicate the need for further research on the conditions under which behavior analysis techniques will be most effective. Copyright © 2006 John Wiley & Sons, Ltd.