Autism prevalence has increased rapidly in the United States during the past two decades. We have previously shown that the diffusion of information about autism through spatially proximate social relations has contributed significantly to the epidemic. This study expands on this finding by identifying the focal points for interaction that drive…

For the past two decades, the mathematical achievement of American students has been a major concern. Students in traditionally marginalized communities often are affected more and perform less proficient in mathematics due to issues related to teacher effectiveness. One approach to increase teacher effectiveness has been through collaboration.…