Behavior treatment programs, readability, and treatment outcomes

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Reading grade level and readability are rarely considered as important variables in the implementation and outcome of behavior treatment plans. In the first of two studies, we analyzed the reading level and readability of 20 behavior treatment plans developed by certified behavior analysts. We found that the behavior plans were written at college reading level—well above the reading level of the average frontline staff member. On a test of readability, none of the behavior plans met criterion on all 12 critical readability variables. To test if there was a correlation suggestive of a relationship among reading grade level, readability, and treatment outcomes, we divided the behavior treatment plans into two groups; 10 that had relatively high readability levels and 10 that had relatively low readability levels. A comparison of the two groups indicated that the average reading level of the behavior plans in both groups was about the same, and the higher readability had somewhat better treatment outcomes. In the second study, we used a multiple baseline design across four individuals to directly assess the effects of manipulating reading grade level and readability of behavior treatment plans on treatment outcomes. Results showed that these manipulations greatly enhanced treatment outcomes of all four individuals. Our data suggest that reading grade level and readability of behavior treatment plans are important variables that directly affect treatment outcomes.