This thesis investigates the performance of Greek preschool children with SLI on morphosyntactic and phonological short-term memory measures. The aims were twofold: (A) to identify areas of exceptional difficulty that could contribute to the diagnosis of SLI in Greek, and (B) to shed light on theoretical issues pertaining to the nature of SLI, and specifically: 1) whether language development in SLI can be characterised as delayed or deviant, and 2) whether the deficits observed can be better accounted for within a domain-specific (linguistic) or a domain-general (processing) account.EThOS - Electronic Theses Online ServiceGBUnited Kingdo