Spatial strategies of oriented travel inCallicebus moloch andSaimiri sciureus

The behavior of 9 titi monkeys (Callicebus moloch) and 12 squirrel monkeys (Saimiri sciureus) was examined with respect to three categorical strategies of spatial orientation: direction, turn, and place strategies. Individual animals were initially trained to travel to a fixed location from a constant release point. Following the initial training, each animal was tested by releasing it a number of times from three other release points and analyzing its travel paths. During testing, most individual subjects tended to be highly consistent in their spatial behavior, typically following travel paths consistent with one of the three spatial strategies. No one spatial strategy, however, characterized the behavior of either species.     

Empowering teacher leadership: a cross-country study

ABSTRACT

The contextual, purpose-driven challenges facing schools and school systems across the world call for creative and innovative responses to revitalize school practices. The process of revitalization will require new thinking, new mindsets within an adaptive school culture and new leadership roles (formal and informal). Often the perception of leadership held within a school is that it is the province of the principal; however, if we move from a top-down model of leadership we can ulitize the capacity of others within to lead the learning. To enable this to happen, teacher leaders need to work with agency and principals need to nurture and grow their formal and informal leadership roles within the school. For many teachers, the question is how they can establish and commit to leadership roles and responsibilities within the school community while remaining in a teaching position. This case study examined the practices of teachers as they experienced leadership across three cross-cultural contexts: Colombia, Canada and Australia. It presents exemplars of teacher leadership in action and provides images of teacher leadership as enacted in addition to an understanding of the factors that were important in supporting their leadership actions.     

The effects of the Kalamazoo Promise on college choice

On November 10, 2005, then Superintendent of the Kalamazoo Public School System, Janice Brown announced—to the surprise of Kalamazoo’s residents—the beginning of the Kalamazoo Promise. Fully funded by a set of anonymous donors, the Kalamazoo Promise is an urban revitalization program that offers up to four years of free tuition to any public college or university in the state of Michigan for graduates of the Kalamazoo Public School system who meet certain eligibility criteria. Using the subsidy as a source of exogenous variation in the price of college, we use quasi-experimental methods to evaluate the impact of the subsidy on college choice. We find that the Kalamazoo Promise increases the likelihood that students from Kalamazoo Public Schools consider public institutions in Michigan. In addition, we find that the Kalamazoo Promise especially impacts the college choice set of students from families who earn less than $50,000 in annual income.     

Opportunities to Learn in the Budapest Mathematics Classroom

This paper examines the nature of the problems posed, the processes by which their solutions were made public, their structural contribution to a lesson and the opportunities they offered for the learning of mathematics in Budapest, Hungary. The problems were derived from observations, the processes of which were informed by various comparative studies, of 94 mathematics lessons in the 10–14 age range. Problems, the analysis and categorisation of which were informed by the literature, tended to fall into two categories – single response with high levels of cognitive demand and multiple response with high levels of cognitive demand. Structurally lessons fell into a well practised pattern of classroom behaviour. They began with a public review of homework, comprising two or three multiple response problems which were solved collaboratively. This was followed by a warm-up period involving the oral setting and mental solving of a few single response problems. Lastly, the main body of the lesson involved several cycles in which a multiple response problem was posed, attempted individually before solutions were shared publicly. Lessons ended with homework being set. The discussion of the findings is framed by Hungary's variable performance on recent international tests of mathematical attainment.     

Biology Undergraduates' Misconceptions about Genetic Drift

This study explores biology undergraduates' misconceptions about genetic drift. We use qualitative and quantitative methods to describe students' definitions, identify common misconceptions, and examine differences before and after instruction on genetic drift. We identify and describe five overarching categories that include 16 distinct misconceptions about genetic drift. The accuracy of students' conceptions ranges considerably, from responses indicating only superficial, if any, knowledge of any aspect of evolution to responses indicating knowledge of genetic drift but confusion about the nuances of genetic drift. After instruction, a significantly greater number of responses indicate some knowledge of genetic drift (p = 0.005), but 74.6% of responses still contain at least one misconception. We conclude by presenting a framework that organizes how students' conceptions of genetic drift change with instruction. We also articulate three hypotheses regarding undergraduates' conceptions of evolution in general and genetic drift in particular. We propose that: 1) students begin with undeveloped conceptions of evolution that do not recognize different mechanisms of change; 2) students develop more complex, but still inaccurate, conceptual frameworks that reflect experience with vocabulary but still lack deep understanding; and 3) some new misconceptions about genetic drift emerge as students comprehend more about evolution.     

A Dual Identity Approach for Conceptualizing and Measuring Children's Gender Identity

The goal was to test a new dual identity perspective on gender identity by asking children (n = 467) in three grades (M_age = 5.7, 7.6, 9.5) to consider the relation of the self to both boys and girls. This change shifted the conceptualization of gender identity from one to two dimensions, provided insights into the meaning and measurement of gender identity, and allowed for revisiting ideas about the roles of gender identity in adjustment. Using a graphical measure to allow assessment of identity in young children and cluster analyses to determine types of identity, it was found that individual and developmental differences in how similar children feel to both genders, and these variations matter for many important personal and social outcomes.     

College Costs and Credit Cards: How Student Credit Card Use Influences College Degree Attainment

Research in Higher Education - Since the turn of the twenty-first century, going to college has become increasingly financially difficult in the United States. Tuition prices continued to rise,...