The first part of this response to Baker (2012) examines studies that have attempted to determine the optimum treatment intensity of reading interventions associated with a Response to Intervention (RTI) model of service delivery. In general, the findings indicated that differences in broad measures of intensity (duration and scheduling) did not result in differences in reading outcomes. These non-significant findings and Baker's excellent discussion of all of the factors that impact treatment outcomes led me to question how useful pharmacological dosage concepts are for educators and speech-language pathologists (SLPs). This commentary concludes by acknowledging that the more information available about the active ingredients of treatment episodes, the better able one will be to design effective and efficient interventions to improve speech, language, and literacy.
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