Inclusion Criteria:

• Documented diagnosis of childhood apraxia of speech.
• Males and females; age 24 months – 12 years.
• Intelligibility limitations impact communication success.
• Informed assent and parental informed consent to participate in the study.
• Parental willingness to comply with all study procedures and lifestyle considerations and availability for the duration of the study.
• Ability to participate in two 30-minute therapy sessions 5 days per week.
• Judged to display behavioral characteristics prerequisites for success with DTTC:
  • Ability and willingness to focus on the clinician’s face for at least two seconds;
  • Ability and willingness to attempt imitation of oral movements
  • Ability and willingness to follow simple directions;
  • Ability and willingness to perform 4 trials of the same speech target;
  • Receptive language within average range or mildly delayed as demonstrated by SS > 74 on a standardized test of language ability.

Exclusion Criteria:

For Experiment 1, an individual who meets any of the following criteria will be excluded from participation in this study:

• Presence of cleft lip/palate.
• Diagnosis of autism spectrum disorder.
• Diagnosis of more than equivocal dysarthria.

For Experiment 2, these exclusion criteria do not apply.

Eligibility last updated 1/18/24 Questions regarding updates should be directed to the study team contact.