Does it matter who participates in our studies? A caution when interpreting the research on positive behavioral support.

Research upon the treatment of challenging behaviors like as aggression, tantrums, and self-injury expanded significantly above the past two decades. The use of functional assessments and functionally based interventions for assessing and treating challenging behavior has predominated, and progres is clearly illustrated in the research published in this and other journals. Reviews of the effectiveness of these behavioral interventions are quite positive. For example, individual analysis of the research upon positive behavioral support concludes that from half to sum of two units thirds of the outcomes of