| This study investigated lexical diversity as a parameter to examine the effects of an intensive Comprehensive Aphasia Program (ICAP)service delivery model and its potential modifications. Lexical diversity was examined by analyzing discourse samples produced by people diagnosed with aphasia participating in Idaho State University’sICAP atthree different time points (pre-treatment, post-treatment, and a follow-up therapy probe). The service delivery model used in this study is a modified version of the ICAP model where the primary difference is the length of time participants received services(1-week versus 2-6 weeks reported in the literature). Research referenced throughout this paper refers to studies using the typical ICAP model as the research for the modified version of this delivery model is in its infancy. Descriptive level statistical data from eight participants with non-fluent aphasia subtypes across seven discourse tasks was collected but no clear trends were noted in the group data though some emerging trends within the individual data were identified. Future studies are recommended with a larger population, incorporating different measures of lexical diversity such as the Word Information Measurement, and including a qualitative measurement to account for participant perspectives on the ICAP. Abstract Key words: Aphasia, Lexical Diversity, Modified Intensive Comprehensive Aphasia Program, ICAP, Narrative Discourse Analysis |