Do images influence assessment in anatomy? Exploring the effect of images on item difficulty and item discrimination

Anatomists often use images in assessments and examinations. This study aims to investigate the influence of different types of images on item difficulty and item discrimination in written assessments. A total of 210 of 460 students volunteered for an extra assessment in a gross anatomy course. This assessment contained 39 test items grouped in seven themes. The answer format alternated per theme and was either a labeled image or an answer list, resulting in two versions containing both images and answer lists. Subjects were randomly assigned to one version. Answer formats were compared through item scores. Both examinations had similar overall difficulty and reliability. Two cross‐sectional images resulted in greater item difficulty and item discrimination, compared to an answer list. A schematic image of fetal circulation led to decreased item difficulty and item discrimination. Three images showed variable effects. These results show that effects on assessment scores are dependent on the type of image used. Results from the two cross‐sectional images suggest an extra ability is being tested. Data from a scheme of fetal circulation suggest a cueing effect. Variable effects from other images indicate that a context‐dependent interaction takes place with the content of questions. The conclusion is that item difficulty and item discrimination can be affected when images are used instead of answer lists; thus, the use of images as a response format has potential implications for the validity of test items. Anat Sci Educ © 2012 American Association of Anatomists.     

Who's calling the plays in school psychology?

This paper reviews several forces, singly and in interaction, that are producing an impetus for change in both the practice of and training in school psychology. Imperatives for change in professional training and practice are reviewed.     

Who's the winner? Children's math learning in competitive and collaborative scenarios

Games are frequently used to promote math learning, yet the competitive and collaborative contexts introduced by games may exacerbate gender differences. In this study, 1st and 2nd grade children in the U.S. (ages 5–8; N = 274; 70% White, 15% Asian, 2% Black, 1% Native American, 14% mixed or other race; 17% Hispanic) played either a competitive, collaborative, or solo game to learn about a challenging novel math concept: proportion. Overall, both social contexts boosted perseverance and task attitudes. However, analyses revealed the competitive condition yielded gender differences in attention to proportion in the presence of competing cues, with older boys underperforming in the competition condition. Potential explanations for these findings, as well as implications for classroom math learning, are discussed.     

Who's counting? Legitimating measurement in the audit culture

What gives legitimacy to the numbers that constitute the measurement techniques of the audit culture? We argue that the audit culture's blind application of numbers to people as if there was no moral or ethical dimension to the calculation rests on a military discourse resident in mathematics. This argument is based on the genealogy presented in this paper, which uncovers a regime of measurement-by-number, sedimented as legitimate through an association with military power. We claim that this military measurement-by-number is a dubious technique of government on which the audit culture relies for its highly questionable authority.     

Who's in the house? Race differences in cohabitation,single parenthood,and child development

This study examined four questions: (1) How does family structure (specifically, single parenthood, married parent, and cohabitating parent) affect children's delinquency and math test scores? (2) Do these effects differ by race? (3) Do parenting practices mediate the links between family structure and children's outcomes? and (4) Does this mediation differ by race? Unlike some previous work in this area, the present study distinguished between the effects of single parenthood and cohabitation. Using fixed-effects techniques to control for unobserved heterogeneity between children in the various family structures, single parenthood was found to be associated with reduced well-being among European American children, but not African American children. Cohabitation was associated with greater delinquency among African American children, and lower math scores among European American children. No evidence was found to indicate that parenting mediated the links between family structure and children's outcomes. Finally, it was found that for African American children, measures of maternal warmth and the provision of rules had direct effects on children's delinquency.     

Who's Afraid of the Big Bad Box? Children and TV Advertising in four Countries

Abstract

To what extent are children influenced by television and, in particular, by advertising? The study discussed in this article was conducted in four countries with, in some cases, surprising results. Parents think that television influences their children, but children too have views on how adults are affected.     

‘Changing the context’: Tackling discrimination at school and in society

In this paper we propose a social psychological framework for studying the role of schools in promoting positive intercultural relations. We draw on data from schools in England where addressing issues of cultural diversity is a key aim of educational practice. We focus specifically on the role of social context in educational activities that tackle discrimination. We consider the socio-political context, local community context, and immediate school context from a social representations theory perspective. Using data from interviews with staff and focus groups with students in schools from three very different localities, we show that the socio-political context may limit schools’ ability to promote positive intercultural relations but also that it is possible for schools to promote broader change from the bottom-up, acting as agents of change at a societal level, i.e. in terms of changing the local and broader societal contexts in which they are located.     

Singaporean educarers’ reflections about their role and practices in the education and care of infants

ABSTRACT

The way educarers conceptualize their role in the education and care of infants can influence their pedagogical practices and interactions with infants in their care. The Early Years Development Framework was developed to provide key principles, practices, and learning outcomes to guide educarers working with children under 3 in Singapore. It envisioned educarers to be attuned and responsive to infants’ development in their physical, linguistic, cognitive, social, and emotional domains. The professional educarer is also envisaged to engage in reflection and practitioner research for professional growth. Using principles stipulated in the EYDF as an analytical framework, this paper explores how 6 Singaporean educarers’ conceptualize and reflect on their dual role of education and care of infants. Half of the educarers viewed their role as custodial in nature, with less focus on the education aspects of caregiving. The practice of critical reflection was also not prevalent in the work of some of the educarers. Work conditions were found to be a contributing factor that supported or impeded the practice of reflection. How conceptions can potentially be transformed and changed by the practice of critical reflection and implications of these findings on professional training and policy for educarers are discussed.     

Inequalities in access to higher education in Africa: How large are they? Do they mirror the situation in the metropole 60 years ago?

There have been many studies of the socio-economic background of students in developed countries; but – apart from extensive commentary on the gender gap – far fewer in developing countries. In Africa, this is mostly because the University record systems do not record corresponding data; and because the international standard household surveys such as DHS only ask about educational attainment of household members which of course mainly excludes current students. This paper uses the record systems of the African Institute of Mathematical Sciences (AIMS) and specifically the Pre-Assessment form completed by all students on entry with information about their parental background.The combination of parents not having more than primary education, renting and not owning land identified only between 1 and 3 students a year. Taking the opposite extreme, the percentage of entrants reporting that their parents had a post-Secondary qualification is considerably higher (around 57% on average) than the norm at the time the parents would have been studying (around 7%). These students were certainly not poor, they are upper middle class. Further analysis identifies differences in the patterns for those at Anglophone or Francophone centres; and trends over the last four years.The paper then reviews the trends in inequality in access to higher education in the ‘mother’ countries – UK and France – from about sixty years ago until recently, to ask whether the social inequalities observed among AIMS students can be seen as ‘derived’ from those in the mother countries, with a nuanced positive conclusion.     

Automatic character detection and segmentation in natural scene images

INTRODUCTION Text detection and segmentation from a naturalscene is very useful in many applications. With theincreasing availability of high performance, lowpriced, portable digital imaging devices, the applica-tion of scene text recognition is rapidly expanding. Byusing cameras attached to cellular phones, PDAs, orstandalone digital cameras, we can easily capture thetext occurrences around us, such as street signs, ad-vertisements, traffic warnings or restaurant menus.Automatic recogn…     

Who's the Boss? Concepts of Social Power Across Development

Power differences are observed in children's early relationships, yet little is known about how children conceptualize social power. Study 1 recruited adults (n = 35) to assess the validity of a series of vignettes to measure five dimensions of social power. Using these vignettes, Study 2 (149 three‐ to nine‐year‐olds, 42 adults) and Study 3 (86 three‐ to nine‐year‐olds, 22 adults) showed that children visiting a science museum at a middle class university town are sensitive to several dimensions of social power from a young age; however, an adult‐like breadth of power concepts does not develop until 7–9 years. Children understand social power whether the powerful character is malevolent or benevolent, though malevolent power is easier to detect for children and adults.     

Can the Subaltern Nation Speak by Herself in the History Curriculum?

This article examines and discusses the ways in which hegemonic and subaltern discourses alternatively evoke different, and sometimes competing, notions of the nation and how they might productively coexist within the history curriculum. More precisely, using Homi Bhabha's conceptual tools of pedagogic and performative narratives of the nation, the article examines history curriculum as permeable to alternative and endless reinventions of the nation and as intrinsically linked to a fixed, stable, and officialized narrative. The study, based on the analysis of the construction of the Catalan nationhood in school textbooks and teachers' and museums' resources in Catalonia (Spain), suggests complex dynamics between hegemonic and subaltern discourses, rather than fixed conceptualizations. Whereas revolutionary discursive depictions of the nation incorporated in the curriculum have a tendency to be officialized, institutionalized, and domesticated through their mediation in educational texts, the article suggests possibilities for more effectively building the subaltern voice within the school curriculum.     

Who's Accountable to the Constitution? Thirty Years of Judicial Politics in State Education Finance Litigation

Politicians promoting educational accountability are, in principle, bound by state and federal constitutions under which they serve, facing judicial scrutiny if they fail to meet the constitutional standards set for them. In the case of education, each of the 50 states has its own constitutional guidelines for the provision of education, and citizens in nearly every state over the past 30 years have challenged in court whether their elected officials have appropriately allocated resources to all children to ensure the educational provision their constitutions guarantee. Court cases have not, however, proved to be impartial assessments of legislative enactments in light of constitutional provisions. Four case studies provide a sampling of the politics of court and state contexts involved in holding legislatures accountable to their constitutional mandates.     

Who's in STEM? An Exploration of Race,Ethnicity, and Citizenship Reporting in a Federal Education Dataset

As the United States becomes more racially and ethnically diverse and draws more students from across the globe, more representative data are needed to understand at-risk and underrepresented populations in higher education, particularly in the science, technology, engineering, and mathematics (STEM) fields. The authors argue that the current reporting standards for the Integrated Postsecondary Education Data System (IPEDS) result in the misrepresentation of racial and ethnic populations in STEM by forcing non-U.S. students into a “master status” category regardless of their racial or ethnic group membership. This study uses data from IPEDS and the American Community Survey to estimate the possible misrepresentation of reported bachelor degree completions by racial and ethnic group and citizenship status in the biological and biomedical sciences and engineering. We found that nearly all of the racial and ethnic groups in IPEDS may be significantly misreported because of the reporting standards for U.S. citizenship. With these findings, various implications are discussed, including higher education decision-making policies; interpretation of academic and social experiences of diverse peoples (race, ethnicity, and nationality); and creation of effective structures for academic success, particularly for students of color, regardless of citizenship.     

Who's afraid of research questions? The neglect of research questions in the methods literature and a call for question-led methods teaching

This paper examines the place of research questions in the teaching of research methods. It describes the neglect of research questions in both methods texts and the wider academic literature, but notes that this situation is not peculiar to educational research and that similar concerns have been raised in the social sciences more widely, as well as in the humanities. It explores some possible explanations for this neglect and argues that the lack of attention paid to research questions may be related to the availability of appropriate resources, the structure and content of methods texts and the way some research is conducted and presented. Question-led methods teaching is presented as both a logical approach to the teaching of research design and data analysis and also a strategy that may help to overcome some of the weaknesses in current practice. It is argued that focusing on research questions can encourage capacity-building among new researchers and may discourage the early formation of ‘mono-method’ identities.     

“Who's in charge?” Preschool children's concepts of authority

This study examined preschool children's concepts of authority with regard to three factors: adult/peer status, social position, and type of command. Sixty-seven children (ranging in age from 4 years; 0 months-6 years; 2 months) were asked to evaluate the legitimacy of commands of persons with varying age (peer/adult) and social position (with or without a delegated authority position), to give rationales for obedience, and to make choices between different persons giving opposing commands. Subjects accepted both peer and adult authorities and gave priority to peer authority over adult nonauthority, but did not extend the jurisdiction of authority to commands which failed to prevent harm. The findings show that preschoolers have understandings of the social context in which authority relations are embedded, conceptualizing authorities not solely with respect to their adult status, but to their role within the social context of the school.     

Who's minding the kids? Experimental evidence on the demand for child care quality

Despite the well-documented benefits of high-quality child care, many preschool-age children in the U.S. attend low-quality programs. Accordingly, improving the quality of child care is increasingly an explicit goal of government policy. However, accomplishing this goal requires a thorough understanding of the factors that influence parents’ child care decisions. This paper provides the first evidence on the demand for child care characteristics in the market for home-based care. Using a randomized audit design, we study three dimensions of caregiving: affordability (i.e., the hourly price of child care), quality (i.e., caregiver education and experience), and convenience (i.e., caregiver car ownership and availability). We find that while parents are extremely sensitive to the cost of child care, they also have strong preferences for quality, particularly caregivers’ educational attainment. Furthermore, we obtain mixed results on the convenience dimensions of child care, with parents valuing those owning a car but not those with more availability. Finally, we find significant heterogeneity in child care preferences according to families’ age of youngest child, race and ethnicity, and willingness-to-pay. Our findings are consistent with the notion that the problem of low-quality in the U.S. child care market may be explained by lack of affordability or the informational resources to identify high-quality care, rather than an undervaluation of such care by parents.