Studies of individuals with Cornelia de Lange syndrome (CdLS) have described changes in mood and behavior with age, although no empirical or longitudinal studies have been conducted. Caregivers of individuals with CdLS (N = 67), cri du chat syndrome…
We compared PECS and VOCA intervention strategies to promote communication opportunities for three girls with Rett syndrome and severe to profound developmental disabilities. The first aim of the study was to assess the effectiveness of both…