The School of Clinical Speech and Language Studies at Trinity College Dublin conducted a speech therapy study on a group of children and young adults who suffer from Down's Syndrome. The study focused on the intelligibility of the speech. The rationale for this focus is.due to the concern voiced by parents that their children's speech be understood. Specific language difficulties, unintelligible speech and fluency difficulties are all often associated with Down's Syndrome. Research has indicated that patients with Down's Syndrome can make progress in developing communication skills through therapy. The Computer Assisted Phonological Data Analysis (CAPDA) software tool was developed in order to assist speech therapists in their assessment of children and young adults who suffer from Down's Syndrome (or speech disorders in general).