Stimulus complexity and autistic children's responsivity: assessing and training a pivotal behavior.
Teach autistic learners with single-step cues first, then stack new parts one by one to lift overall accuracy and willingness to respond.
01Research in Context
What this study did
The team worked with autistic children and watched how they answered when instructions held one, two, three, or four parts.
They used a multiple-baseline design across behaviors. Each child got the same tasks, but the number of pieces in the instruction grew over time.
After testing, the adults taught the kids to handle the harder, many-part instructions and then checked if the skill carried over to new, still-complex cues.
What they found
Accuracy dropped each time a new piece was added to the request.
Once the trainers broke the complex cue down and taught it step-by-step, the children responded well again.
The gains spread to brand-new four-part instructions, showing the teaching stuck.
How this fits with other research
Varley et al. (1980) showed autistic kids move toward simple social toys when the toy’s look is predictable. The 1990 paper flips that idea: it asks what happens when the cue itself becomes unpredictable because it keeps growing.
DeCarlo (1985) saw no drop in visual discrimination when extra, changing cues were added. Mace et al. (1990) did see a drop when extra instruction components were added. The difference is the task: the 1985 study asked kids to pick a picture; the 1990 study asked them to act on a spoken chain of directions.
Argott et al. (2017) extend this work into the social world. They used video modeling plus prompts to teach multistep empathetic replies. Both papers show you can build complex, many-part responding in autistic learners if you train the pieces first.
Why it matters
For your next session, start with one-step instructions and get solid data. Then add one new element at a time, reinforcing each layer. This slow build keeps kids accurate and cuts problem behavior that pops up when tasks feel too big. Use the same plan for language, play, or self-care routines.
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02At a glance
03Original abstract
Interdisciplinary research suggests that autistic children's limitations in responding to environmental stimuli may be directly related to the number of components contained in the stimuli; as the number of components increases, such children hypothetically would exhibit greater difficulties in responding. The central purpose of this experiment was to assess whether such children indeed exhibit greater difficulties in responding as the number of components contained in an environmental stimulus was increased from one to four. If the children's responsivity was a function of stimulus complexity, a second focus of this experiment was to assess the feasibility of teaching them to respond to a complex environmental stimulus containing up to four components and to determine whether the effects of the intervention would generalize to other situations involving complex structured and social stimuli. Data gathered using a multiple baseline design across behaviors and children indicate that all of the children exhibited fewer correct responses to a stimulus as the number of stimulus components was increased from one to four. The results further showed that the training program used in this investigation was effective in producing some generalized increases in the children's responses to complex structured and social stimuli. Conceptualizing autistic children's responses to complex multicomponent stimuli as a pivotal target behavior that can be operationally defined may have important implications for understanding and altering the children's responsivity and development.
Journal of autism and developmental disorders, 1990 · doi:10.1007/BF02284721