%0 Journal Article
%T Item-validity analysis of the SED-S in a multicentre study of adults with intellectual disabilities.
%A Hermann H
%A Witte A
%A Kempelmann G
%A Barrett BF
%A Zaal S
%A Vonk J
%A Morisse F
%A Pöhlmann A
%A Sterkenburg PS
%A Sappok T
%J J Appl Res Intellect Disabil
%V 37
%N 5
%D 2024 Sep
%M 39147727
%F 2.162
%R 10.1111/jar.13275
%X <B>BACKGROUND: </B>Valid and reliable instruments for measuring emotional development are critical for a proper diagnostic assignment in individuals with intellectual disabilities. This exploratory study examined the psychometric properties of the items on the Scale of Emotional Development-Short (SED-S).<BR><B>METHODS: </B>The sample included 612 adults with intellectual disabilities (Mage = 37.35, SDage = 13.27; 59.8% males). Item validity analysis comprising sensitivity and specificity rates and discriminatory power were determined.<BR><B>RESULTS: </B>The relative mean frequency of 'yes' answers to all 200 items was 29.5%. The mean sensitivity rate was 67.5% and the mean specificity rate was 79.3%. Most items (85.0%) showed good discriminatory power with the adjacent stage(s), especially between SED-1, SED-2, SED-3 and SED-4. Particularly in SED-4 some items showed weaknesses in the differentiation between these stages.<BR><B>CONCLUSIONS: </B>This study adds to previous validation studies by showing that most SED-S items have psychometrically sound properties.