Prior research on small-group collaboration identifies several behaviors that significantly predict student learning, such as exchanging explanations and applying help received. Previous reports focus on student behavior to understand why many students do not engage in behaviors predictive of learning, leaving unexplored how teachers may influence… (More)
Background: It remains unknown whether short measures of depression perform as well as
Substantial evidence suggest that people tend to be unrealistically optimistic that positive events will happen to them and that negative events will not. However, recent research indicates that under certain conditions they may be unrealistically pessimistic. Variations in the levels of optimism and pessimism experienced towards events are generally given… (More)
This paper compares the retention and effectiveness of teachers with substantial prior work in non-teaching careers to those of other new teachers in New York City. We find that teachers with prior careers are less positive about their decision to become a teacher than are other teachers, but we see only small differences in attrition behavior after their… (More)
The purpose of this study is to describe the effects of collaboration between a university and middle school that was designed to increase middle school students' knowledge of solar energy. Three undergraduates enrolled in a service-learning course that covered basic solar energy concepts and formative assessment instructional strategies. The focal point of… (More)
The views expressed are solely those of the authors and may not reflect those of the funders or institutions. Any errors are attributable to the authors. CALDER working papers have not gone through final formal review and should be cited as working papers. They are intended to encourage discussion and suggestions for revision before final publication.