Difficulties in language acquisition seem to be serious, if there are additional problems like intellectual and/or emotional/social impairment, which are often reported [10]. These additional problems and the definition of specific language impairment as a developmental disorder, restricted to language acquisition seem to be contradictory [17]. Aim of that study is to look for specific language impaired children with similar cognitive abilities and though to investigate, if there are children without additional cognitive problems considering the definition of specific language impairment. 93 children, between 4;0 and 6;6 years old, were diagnostized as specific language impaired (ICD-10) and were assessed by the "Hannover Wechsler Intelligenztest für das Vorschulalter (HAWIVA)" [6] (german version of WPPSI). Cluster analysis showed, that 1/3 of the specific language impaired children presented no additional cognitive problems and 2/3 of them showed cognitive problems regarding nonverbal and verbal intelligence indeed. These additional cognitive problems indicate that there may be a more basic cognitive defect underlying specific language impairment [15]--at least for a group of specific language impaired children. Furthermore the nonverbal and verbal intellectual difficulties emphasize to general developmental support of specific language impaired children for optimal improvement in language acquisition.