Hc. Steinhausen et C. Juzi, ELECTIVE MUTISM - AN ANALYSIS OF 100 CASES, Journal of the American Academy of Child and Adolescent Psychiatry, 35(5), 1996, pp. 606-614
Objective: An extended series of 100 children with elective mutism (EM
) was clinically analyzed. Method: The total sample included two subgr
oups of clinically referred children at different locations and a subg
roup of nonreferred children with EM. The study was based on comprehen
sive item sheets and, in the nonreferred sample only, the Child Behavi
or Checklist. Results: EM is a rare disorder in the referred child psy
chiatric samples. It typically starts at preschool age, is more common
in girls, and is seen in all social strata. A background of migration
and early developmental risk factors is also quite common. Premorbid
speech and language disorders play a role in one third of the clientel
e, and three quarters of children with EM had behavioral abnormalities
during infancy and preschool age. School and unfamiliar people create
the social context in which children with EM most frequently do not s
peak. Shyness and internalizing behavior problems are the most common
personality features in EM, and comorbid diagnoses are quite frequent.
Conclusion: This large series of affected children has identified the
most typical features of EM and thereby extends the limited knowledge
of this rare disorder of childhood.