Comparisons of discrete-trial and normalized behavioral language intervention for young children with autism.

Delprato (2001) looked at ten controlled studies that compared two ways to teach language to preschoolers with autism. One way was discrete-trial training: adult-led, table work, many repetitions. The other way was normalized behavioral language intervention: play-based, child-led, everyday routines.

The review counted how many kids made language gains and how parents felt during each method.

Across all ten studies, kids in the normalized, play-based groups made bigger language gains. Their parents also smiled more and felt less stressed than parents watching discrete trials.

Spriggs et al. (2016) later moved the same play-based style into public preschool classrooms and still saw strong language growth. Lane et al. (2020) pushed it further, using the style with older, minimally verbal elementary students; gains were smaller and shakier, showing age matters.

Ingersoll et al. (2006) used the same child-led spirit to teach object imitation instead of words. Language still grew, proving the approach helps even when the target is different.

Pettingell et al. (2022) asked teachers which method they would pick. Teachers chose the naturalistic style over discrete trials when they felt supported, matching the review’s evidence with real-world preference.

If you run table-top drills, try shifting more trials into play. Follow the child’s lead, model words around what they touch, and keep the pace loose. You may see faster language growth and happier parents in your next session.