The Genetic Drift Inventory: A Tool for Measuring What Advanced Undergraduates Have Mastered about Genetic Drift

Understanding genetic drift is crucial for a comprehensive understanding of biology, yet it is difficult to learn because it combines the conceptual challenges of both evolution and randomness. To help assess strategies for teaching genetic drift, we have developed and evaluated the Genetic Drift Inventory (GeDI), a concept inventory that measures upper-division students’ understanding of this concept. We used an iterative approach that included extensive interviews and field tests involving 1723 students across five different undergraduate campuses. The GeDI consists of 22 agree–disagree statements that assess four key concepts and six misconceptions. Student scores ranged from 4/22 to 22/22. Statements ranged in mean difficulty from 0.29 to 0.80 and in discrimination from 0.09 to 0.46. The internal consistency, as measured with Cronbach''s alpha, ranged from 0.58 to 0.88 across five iterations. Test–retest analysis resulted in a coefficient of stability of 0.82. The true–false format means that the GeDI can test how well students grasp key concepts central to understanding genetic drift, while simultaneously testing for the presence of misconceptions that indicate an incomplete understanding of genetic drift. The insights gained from this testing will, over time, allow us to improve instruction about this key component of evolution.     

GERONTOLOGICAL KNOWLEDGE AND ATTITUDES OF STUDENTS OF RELIGION

Stereotypes about aging and the old, both negative and positive, have significant influence upon older people themselves. Often unknowingly, older people incorporate these stereotypes into their own thinking and self-perceptions. A literature search revealed four primary hypotheses about the manner in which these self-stereotypes impact older people: stereotype threat, comparison, externalization, and internalization. Anecdotal examples of the four hypotheses are drawn from an unrelated research study that the authors are currently undertaking. Among these hypotheses, four basic characteristics of self-stereotypes are identified: (a) stereotypes can be negative or positive; (b) stereotypes have significant power, particularly if they are self-relevant; (c) stereotypes can be operative without awareness and influence physical and cognitive outcomes; and (d) negative stereotypes can be countered by positive priming. Due to their ability to significantly influence the cognitive and functional well-being of older people, further research is essential to better understand how these self-stereotypes function.     

Resilience in Families of Husbands with Prostate Cancer

This study identifies qualities associated with the successful adaptation of families with a husband diagnosed with prostate cancer. Both qualitative and quantitative measures were used in this cross-sectional survey research design. Twenty-one husbands and their spouses independently completed six questionnaires and a biographical questionnaire, and they answered an open-ended question. The qualitative findings revealed the importance of intrafamilial support, spiritual/religious beliefs, and professional support and knowledge, while the quantitative results indicated that family adaptation was fostered by the family's internal strengths and durability, affirmative communication, and the experience of social support. The findings could be used to develop interventions that promote family resilience and affirm the reparative potential of families.     

Differentiating between and synthesizing quantitative,qualitative, and longitudinal research on polarized school cultures: a comment on Van Houtte (2006)

Van Houtte provides a valuable large‐sample quantitative analysis of differentiation and polarization processes between and within school cultures in Belgium. Such research across 34 secondary schools provides greater confidence that the findings in the ethnographic tradition for the differentiation–polarization theory are not due to idiosyncracies of the individual schools chosen. However, it is unhelpful to contrast her large‐sample approach with the ethnographic tradition by characterizing the former as quantitative and the latter as qualitative. Many ethnographic studies of secondary schools have employed quantitative methods. It is better to characterize her research as multi‐site and the ethnographic tradition as case‐study. This illuminates how the two methodologies can be more constructively synthesized. Within large sample multi‐site approaches some selection of in‐depth case studies, together with longitudinal data analysis, are needed to disentangle socio‐economic class effects from differentiation effects in order to determine causality.     

Public e-services for agency efficiency and citizen benefit — Findings from a stakeholder centered analysis

The main goals of e-government are to increase agency efficiency and offer benefits to citizens. These goals have often been addressed as two interplaying outcomes of public e-service development, which are possible to achieve in parallel. This article shows that the two frequently applied stakeholders of e-government (agencies and citizens) are much too extensive and heterogeneous in order to be meaningfully addressed in public e-service conceptualization and development. We conduct a stakeholder centered analysis of a public e-service development and implementation process in order to identify stakeholder groups and discuss how they differ in their perceptions and, consequently, also in their feelings of relevance and need related to the e-service. By adopting a multi-faceted perspective on stakeholders, public e-service development can be analyzed and understood in a way that takes several stakeholder groups into account. Our study contributes with deeper insights about a situation where stakeholder salience changes over time, while some stakeholder groups have low salience during the entire process. The result of conducting a stakeholder centered analysis is that we, by visualizing the stakeholder groups' differences, are better prepared to meet and combine different needs related to a planned e-service. Thus, we argue that a stakeholder centered analysis of expectations and opinions concerning the e-service help to develop e-services possible to succeed in offering both external service and internal efficiency.     

Union gives strength: mainstream and special education teachers’ responsibilities in inclusive co-taught classrooms

Co-teaching has gained considerable interest as a means of promoting the inclusion of students with disabilities in mainstream education. Nowadays, there is a consensus among researchers that co-teaching should provide effective education to all students in a mainstream class. This study aims to explore co-teachers’ attitudes towards co-teaching responsibilities in Greek mainstream classrooms. In particular, it examines co-teachers’ attitudes with regard to their non-class-time (planning and evaluation) and class-time (instruction and behaviour management) responsibilities for students with and without disabilities. Four hundred co-teachers participated in this survey study. Overall, our findings demonstrate that mainstream education teachers and special education teachers disagree about their respective class-time and non-class-time responsibilities, and that their role influences their attitudes towards these responsibilities. The study concludes that the different attitudes of co-teachers towards their responsibilities could hinder the development of a shared approach in teaching students with and without disabilities in inclusive classrooms.

Union gives strength

Aesop

(ca. 620-564 BC)