Replication of Strategic and Interactive Writing Instruction in a Nationwide Randomized Controlled Trial.

Area of Science:

• Education
• Linguistics
• Special Education

Background:

• Deaf students often face challenges in writing development.
• Linguistically responsive instruction is crucial for supporting diverse learners.
• Previous research indicated positive outcomes for Strategic and Interactive Writing Instruction (SIWI).

Purpose of the Study:

• To conduct a nationwide replication and second randomized controlled trial (RCT) of SIWI.
• To evaluate the impact of SIWI on writing outcomes and motivation in deaf students in grades 3-6.
• To compare SIWI with business-as-usual (BAU) instruction.

Main Methods:

• A randomized controlled trial involving 50 teachers and 294 deaf students.
• Students were assigned to either SIWI or BAU instruction.
• Writing was assessed using trait-based rubrics, the Structured Analysis of Written Language (SAWL), the Woodcock-Johnson IV, and motivation surveys.

Main Results:

• SIWI students outperformed BAU students on writing traits for both recount and information report genres.
• Significant gains in grammatical clarity (word efficiency ratio) were observed for SIWI students in recount writing.
• Students in the SIWI group reported significantly higher motivation for writing in both genres.
• No significant differences were found on the broad written language measure, potentially due to pandemic-related limitations or prior study limitations.

Conclusions:

• SIWI provides robust evidence of positive impacts on deaf elementary students' writing development and motivation.
• The intervention is particularly effective for improving recount writing skills.
• Replication studies are essential for confirming intervention generalizability and understanding contextual factors.