Reducing Disruptive Behavior in an Urban School Cafeteria: An Extension of the Good Behavior Game

Non-classroom settings are often the most violence-prone areas within a school. This study investigated the impact of an interdependent group contingency on the disruptive behaviors of students in grades K–6 in an urban school cafeteria. Nine female noontime aides and National School and Community Corps staff members implemented the Lunchroom Behavior Game (LBG), a modification of the Good Behavior Game (Barrish, Saunders, & Wolf, 1969), within a multiple-baseline design across three lunch periods. Results showed a decrease in the level of disruptive behaviors following the implementation of the LBG in each lunch period and a decreasing trend for two of the three lunch periods. Discussion focuses on the use of the LBG in preventing antisocial behavior and role expansion for school psychologists interested in promoting school-based prevention strategies

Inorganic Photovoltaics - Planar and Nanostructured Devices

Since its invention in the 1950s, semiconductor solar cell technology has evolved in great leaps and bounds. Solar power is now being considered as a serious leading contender for replacing fossil fuel based power generation. This article reviews the evolution and current state, and potential areas of near future research focus, of leading inorganic materials based solar cells, including bulk crystalline, amorphous thin-films, and nanomaterials based solar cells. Bulk crystalline silicon solar cells continue to dominate the solar power market, and continued efforts at device fabrication improvements, and device topology advancements are discussed. III-V compound semiconductor materials on c-Si for solar power generation are also reviewed. Developments in thin-film based solar cells are reviewed, with a focus on amorphous silicon, copper zinc tin sulfide, cadmium telluride, as well as nanostructured Cadmium telluride. Recent developments in the use of nano-materials for solar power generation, including silicon and gallium arsenide nanowires, are also reviewed