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Session length:

Sessions typically last:

Dose frequency:

Total intervention duration:

  • Overview: 4.5 – 45 hours (mean ~18 hours) – typically over a range of 2-27 weeks (mean: 9.5 weeks) (Williams et al 2010)
  • Number of sessions ranges from 6-8 (Weiner 1981) and 32-67 (Saben and Ingham 1991)

NOTE: The two children included in Saben and Ingham's (1991) study may have had articulation difficulties rather than phonological, so may not be representative.

Cumulative intervention intensity:

NOTE: This research has not taken place from referral to discharge. Often, the time allowance for research intervention is pre-determined.