Matrix training to teach tacts using speech generating devices: Replication and extension.

Area of Science:

• Applied Behavior Analysis
• Augmentative and Alternative Communication (AAC)
• Developmental Psychology

Background:

• Matrix training is an evidence-based practice for teaching complex skills.
• Prior research indicates that training specific elements within a matrix can lead to generalization.
• Individuals with autism spectrum disorder (ASD) often benefit from structured learning approaches.

Purpose of the Study:

• To replicate and extend previous findings on matrix training.
• To investigate the efficacy of matrix training for teaching noun-verb combinations to individuals with ASD using speech-generating devices (SGDs).
• To assess the extent of recombinative and novel generalization.

Main Methods:

• Three male participants with ASD using SGDs participated.
• Two matrices were created: Matrix 1 (training) and a Generalization Matrix (novel targets).
• Diagonal targets in Matrix 1 were trained, followed by posttests on both matrices.

Main Results:

• Two participants demonstrated recombinative generalization within Matrix 1 and successful generalization to the novel matrix.
• The third participant showed within-matrix generalization but required additional matrix training for novel target acquisition.
• Results indicate variability in generalization patterns.

Conclusions:

• Matrix training is a viable method for teaching noun-verb combinations in individuals with ASD using SGDs.
• Recombinative and novel generalization can occur, but individual differences necessitate further investigation.
• Findings support the extension of matrix training principles to AAC users.