This triple-arm, double-blind, randomized clinical trial investigated the effect of multisession prefrontal transcranial direct current stimulation (tDCS) on social functioning in individuals with autism spectrum disorder (ASD). A total of 105 individuals (age 14-21 years) diagnosed with ASD were randomized into the active-tDCS, sham-tDCS, and…

Parkinson's disease (PD) affects speech in the majority of patients. Subthalamic nucleus deep brain stimulation (STN-DBS) is particularly effective in reducing tremor and rigidity. However, its effect on speech is variable. The aim of this pilot study was to quantify the effects of bilateral STN-DBS and medication on articulation, using…

This final report describes the activities of a 3-year project that investigated the effectiveness and efficiency of five stimulus control procedures for teaching individuals with severe disabilities in classroom and community-based settings. The research was conducted in public schools in the northern Illinois area and included the following five…

A study of three adults with profound mental retardation investigated the effects of using systematically assessed preferred stimuli versus staff opinion-based preferred stimuli on increasing happiness indices. Preferred stimuli based on preference assessments were more consistently accompanied by increased happiness indices than were preferred…