The main aim of this study is to examine the effectiveness of a web-based CBT protocol (entitled Meeky Mouse) in the treatment of children with Selective Mutism in Singapore. The researchers hypothesized that the Meeky Mouse program would be associated with higher frequency of speaking behaviors, lower levels of anxiety, greater improvements in clinician-rated severity of mental illness, and higher clinician-rated improvement scores at post-treatment.

Inclusion Criteria:

• 6-12 years old
• primary clinical diagnosis of Selective Mutism
• confirmed diagnosis of Selective Mutism by structured clinical parent interview
• fluent in English

Exclusion Criteria:

• below average intellectual functioning
• the presence of autism and schizophrenia