A closer look at the Mulliken-Barker test

Qualitative analysis of unknown organic compounds is an essential part of the core curriculum for BSc and MSc students in chemistry. The functional group detection is a significant component of qualitative analysis. The present work describes the reason for the failure of Mulliken-Barker test for nitro compounds having carboxylic acid functionality and suggests a possible remedy.     

A comparison of the PIAT and WRAT: A closer look

A sample of 46 white fourth-grade pupils was administered the PPVT, WRAT, and PIAT, except for PIAT Reading Comprehension and General Information. Subjects were selected randomly from those pupils whom classroom teachers judged to be doing at least average academic work. Mean grade equivalents, as well as intercorrelations, were examined for PIAT and WRAT subtests. No sex differences were found for PPVT IQ, age, or most achievement scores. Mean grade equivalents generally ranged between the sixth-and seventh-grade levels. Nearly all PIAT-WRAT intercorrelations were positive and significant, and highest for the similarly labelled subtests. Substantial differences were noted in mean grade equivalents. WRAT Reading and Spelling exceeded their PIAT counterparts by approximately one grade level. In contrast, PIAT Mathematics exceeded WRAT Arithmetic by more than one grade level. The possible effects of differences in item content and task structures on performance were discussed. Implications for practitioners involved in psychoeducational evaluations were considered.     

Achievement goals and academic achievement: A closer look at moderating factors

Two recently published meta-analyses (Huang, 2012, Hulleman et al., 2010) have focused on the association between achievement goals and achievement outcomes. These meta-analyses differed to some extent, e.g., regarding the identified moderators. The present meta-analysis serves to clarify those heterogeneous findings by considering more studies through 2011 and by considering more moderators. Our literature search identified 180 publications (N = 81 947). Analyses (using random effects models) revealed small but significant associations between achievement goals and achievement outcomes (r = −.12 to r = .13; all ps < .01; global performance goals: r = .01, p > .05). The results of the present moderator analyses differed from those of the previous meta-analyses. For example, in contrast to Huang (2012), we were able to find several moderators of the association between performance-approach goals and academic achievement. The results have several important implications, especially regarding the assessment of achievement goals.     

A closer look at the impact of globalization on science education

This paper provides a historical overview of globalisation in order to illustrate how globalisation both shapes and is shaped by external forces. The authors use this perspective to generate a dialogue about the science education project The Case of Sustainability by the Bay, and raise some questions to further the discussion on the impact of globalisation on science education. The paper also discusses the importance of recognizing the historic developments around globalisation in order to understand how changes in the global economy have shaped and continue to shape education through policy regarding funding, curriculum development and implementation, as well as trends in teacher preparation and education. The paper concludes by offering implications for policy makers, researchers, and teacher educators as it relates to science education generally, and globalisation particularly.     

Class size and college students' evaluations of teachers and courses: A closer look

A systematic analysis of extant studies reveals, on average, a very weak inverse association between the size of class enrollment in a college course and students' overall evaluation of the course and its teacher, as well as between class size and evaluations of specific instructional dimensions pertaining to the instructor's skill in presenting material and communicating information. Larger inverse associations are typically found between class size and evaluations of specific instructional dimensions pertaining to the instructor's interactions and interrelationships with students. This pattern of findings is consistent with the accumulating evidence that the instructional dimensions of the first set have greater importance for students in forming their global opinions of teachers and courses than do those of the second set. The further finding in some studies of a negative curvilinear (roughly U-shaped) relationship between class size and evaluations is noted and discussed. Implications for the validity of teacher evaluations are considered and the related question of whether class size biases these evaluations is explored.     

Assisting learning in e-assessment: a closer look at educational supports

This study analyses the educational support offered through information and communication technology during formative assessment in two different cases in higher education. We analysed one blended and one virtual case from two different universities. The study aimed at identifying specific patterns of educational support intended to foster two interaction processes: (1) the promotion of greater autonomy in the students and (2) the construction of more appropriate meanings by them. The analysis showed that these two processes were achieved with different attainment levels in each of the two study cases. Specific patterns of support mediated by technology were found underlying these different results. This led us to identify ‘suitable’ and ‘undesirable’ patterns of support in e-assessment practices.     

A closer look at integrated writing tasks: Towards a more focussed definition for assessment purposes

The use of integrated tasks is increasingly common in second language assessment in both high stakes and classroom contexts. However, because of the vague definition of what constitutes an integrated task, the types of tasks included in this area and the assessment of the resulting writing is highly varied. In this paper, we argue for a better definition of the term ‘integrated writing task’. We start by reviewing current definitions available in the literature, discuss the construct underlying integrated tasks and then propose a number of features which we feel need to be present in integrated tasks. We then propose a new, narrower definition of the term. We hope that this will result in better task design, improved assessment outcomes for test takers, more detailed test specifications, better replicability of research and a shared research agenda.     

Pre‐service Teachers' Conceptions about Teaching and Learning: A closer look at Singapore cultural context

A questionnaire was administered to 313 teacher education students of the National Institute of Education, Nanyang Technological University, Singapore to examine their conceptions about teaching and learning. Two dimensions were identified, viz. traditional and constructivist conceptions about teaching and learning. While both conceptions were prevailing, there was a greater tendency for students to hold a constructivist conception about teaching and learning. Multivariate data analysis showed that there were significant differences in the two conceptions about teaching and learning across program groups, among different race groups, with respect to qualifications, but no significant differences for age, gender and subject groups. Explanations were sought in the ambit of educational initiatives and cultural premises. Implications were also drawn for future development and planning in teacher education.     

A closer look at split visual attention in system- and self-paced instruction in multimedia learning

Two experiments examined visual attention distribution in learning from text and pictures. Participants watched a 16-step multimedia instruction on the formation of lightning. In Experiment 1 (N = 90) the instruction was system-paced (fast, medium, slow pace), while it was self-paced in Experiment 2 (N = 31). In both experiments the text modality was varied (written, spoken). During learning, the participants’ eye movements were recorded. Results from both experiments revealed that learners spent more time studying the visualizations with spoken text than those with written text. In written text conditions learners consistently started reading before alternating between text and visualization; moreover, they spent more time reading the text than inspecting the visualizations. While in Experiment 1 additional time that was made available in conditions with a slow or medium instruction pace was spent inspecting visualizations, in Experiment 2 longer learning times resulted from reading the text more intensively. With respect to learning outcomes (retention, transfer, and visual memory) Experiment 1 revealed an effect of text modality for visual memory only. In Experiment 2 no modality effects were found. Instruction pace was hardly related to learning outcomes. Overall, the results confirm prior findings suggesting that the distribution of visual attention in multimedia learning is largely guided by the text.     

A closer look at the role of mentor teachers in shaping preservice teachers' professional identity

This paper focuses on the extent to which mentoring relationships played a role in creating changes in the professional identity of seven preservice teachers. Semi-structured interviews, observations and reflective journals were used to document the changes experienced by participants as they went through their two placements during their one-year teacher education course. The data indicated that when the mentoring relationships were positive and expectations were met, preservice teachers felt more confident as a teacher. However, for some participants, who experienced a partially negative mentoring relationship, their confidence declined and they felt they did not improve. Implications for practice are discussed.     

Correlation between grade point averages and student evaluation of teaching scores: taking a closer look

One of the most contentious potential sources of bias is whether instructors who give higher grades receive higher ratings from students. We examined the grade point averages (GPAs) and student ratings across 2073 general education religion courses at a large private university. A moderate correlation was found between GPAs and student evaluations of teaching (SETs); however, this global correlation did not hold true for individual teachers and courses. In fact, there was a large variance in the correlations between GPAs and SETs, including some teachers with a negative correlation and a large variance between courses.     

The state of American higher education: A conversation with David Riesman,part two

Editor's Note: From time to time,Academic Questions, under the heading “Voces Academicae,” publishes interviews with teachers and scholars whose experiences and reflections provide a telling commentary on the nature of contemporary university life. This is the second half of an interview that took place in late August 1994 with Professor David Riesman, the distinguished social scientist who is among the foremost authorities on the state of American higher education. Part one of the interview appeared in the Winter 1994–95 issue.     

Improving the quality of student ratings of instruction: A look at two strategies

The effects of rating scale format (behaviorally anchored vs. Likert) and rater training on leniency and halo in student ratings of instruction were investigated. The subjects (N=269) were students enrolled in required courses at a graduate theological seminary in the Southwest United States. A repeated measures design controlling for teacher and course was used. Findings indicated: (a) training was effective in reducing leniency and halo in ratings from both instruments; (b) trained raters exhibited less leniency on two rating dimensions when using behaviorally anchored rating scales (BARS's) than when using the Likert scale; and (c) trained raters exhibited less halo when using the Likert than when using the BARS. The findings demonstrate the importance of focusing efforts to improve quality of ratings on the students rather than on the format of the instrument.Presented at the Twenty-Eighth Annual Forum of the Association for Institutional Research, Phoenix, Ariz., May 1988.     

Children's reasoning about social, physical, and logical regularities: a look at two worlds

In 2 studies, 6-, 8-, and 10-year-old children were interviewed about 3 different types of regularities or rules: social conventions, physical laws, and logical necessities. In the first study, children were asked if regularities could be changed (by consensus) and/or be different in another world. In the second study, children were asked if regularities could be different in another country (on Earth) or on a different planet. Results showed that social regularities were distinguished from the other types, but physical and logical regularities were treated similarly. While the evidence for age differences was equivocal, it was clear that even first graders did not judge physical items as alterable on Earth. This fails to replicate a previously reported finding that children pass through a stage where all items are seen as alterable. Finally, a sex difference emerged, with boys more willing to judge physical and logical regularities to be alterable in another world.     

Liminality,disruption, and change: A prismatic look at pandemic education

PROSPECTS - Using prismatic inquiry, a team of researchers documented a variety of personal experiences that spanned elementary through higher education, with the goal of determining what helped...     

Taking a closer look at how higher education students process and use (discrepant) peer feedback

Little is known on how students process peer feedback (PF) and use it to improve their work. We asked 59 participants to read the feedback of two peers on a fictional essay and to revise it, while we recorded their gaze behaviour. Regarding the PF processing subphase, discrepant PF led to more transitions, but only for participants who reported the discrepancy afterwards. Counterintuitively, participants who did not report the discrepancy, showed longer first-pass reading times. Concerning the PF use subphase, dwell time on essay correlated positively with the quality of the revised essays assessed by professors. Participants with a high-quality revision spent more time addressing higher order comments, corrected one or two lower order aspects at a time and proofread in the end, in which they went beyond the suggestions provided in the PF. These insights can be used when designing training to foster students’ uptake of (discrepant) PF.