Testing measurement invariance of mathematics self-concept and self-efficacy in PISA using MGCFA and the alignment method

The aim of the study is to investigate the measurement invariance of mathematics self-concept and self-efficacy across 40 countries that participated in the Programme for International Student Assessment (PISA) 2003 and 2012 cycles. The sample of the study consists of 271,760 students in PISA 2003 and 333,804 students in PISA 2012. Firstly, the traditional measurement invariance testing was applied in the multiple-group confirmatory factor analysis (MGCFA). Then, the alignment analyses were performed, allowing non-invariance to a minimum to estimate all of the parameters. Results from MGCFA indicate that mathematics self-concept and self-efficacy hold metric invariance across the 80 groups (cycle by country). The alignment method results suggest that a large proportion of non-invariance exists in both mathematics self-concept and self-efficacy factors, and the factor means cannot be compared across all participating countries. Results of the Monte Carlo simulation show that the alignment results are trustworthy. Implications and limitations are discussed, and some recommendations for future research are proposed.

     

How many hours of instruction are needed for students to become competent in engineering subjects?

The aim of this work was to compare the curricula of three different agricultural engineering courses and to determine the competence of graduating students in three subject areas in order to identify possible shortfalls in the number of hours of instruction (HI) required for full competence to be attained.

A total of 132 students sat a voluntary examination in the final year of their studies to determine their competence in three subject areas: electrical facilities, machinery and construction. The degree courses completed by these students are meant to provide them with the legal standing required to undertake infrastructure projects in agricultural installations.

This work detected significant differences in the competence of graduates in the mentioned subjects, depending on the number of HI they had received. Students who had received under 120 HI in these subjects were found to be significantly less competent than those who had received more.     

The Effect of Social Anxiety and Self‐Esteem on College Adjustment,Academics, and Retention

In a survey of 271 undergraduates conducted during the 2nd and 11th week of their 1st semester of college, the authors found that self‐esteem mediated relations between social anxiety and academic, social, and institutional adjustment. Implications for 1st‐year college students with social anxiety are discussed, with an emphasis on early identification and recommendations for counselors to adapt cognitive behavior therapy interventions for use with college populations.     

Identification of Core Competencies for an Undergraduate Food Safety Curriculum Using a Modified Delphi Approach

Identification of core competencies for undergraduates in food safety is critical to assure courses and curricula are appropriate in maintaining a well‐qualified food safety workforce. The purpose of this study was to identify and refine core competencies relevant to postsecondary food safety education using a modified Delphi method. Twenty‐nine experts representing food safety professionals in academia, government, and industry were given 2 rounds of questionnaires that specified initial food safety competencies, core domains, and subdomains. Competencies were defined as a set of skills, knowledge, and abilities that correlate to success of a trainee. The framework for which competencies were classified consisted of (1) core domains, defined as broad food safety subjects; and (2) subdomains, or more specific food safety subjects. The expert panel used a 5‐point Likert scale with an acceptance criterion, or consensus, of 75%, with a rating of “4” or greater. After 2 rounds of questionnaires and revisions from the expert panel, 5 core domains were established: (1) Food Production, Manufacturing, Retail, and Consumer; (2) Foodborne Hazards; (3) Public Health; (4) Legislation and Policy; and (5) Communication and Education. Specific responses from the experts highlighted areas in which further curriculum revision would be beneficial. This study provides a framework for the development of a vetted, standardized undergraduate food safety curriculum. The Delphi method, with its inclusion of professionals representing various sectors of food safety, provided relevant perspectives for curriculum design, and also allowed participants the opportunity to contribute to the education of future food safety professionals.     

National identity in the historical narratives of a morally questionable historical process / Identidad nacional en las narrativas sobre un proceso histórico moralmente cuestionable

Different studies have shown that national groups construct a positive social identity through the appropriation of heroic narratives about the national past. Within this framework, this research studied the narratives of Argentine university students (n = 27), without specific training in history about a historical process in which their national state carried out morally questionable actions. Specifically, we analysed their narratives on the ‘Conquest of the Desert’, a military campaign carried out in the late nineteenth century which entailed the genocide of the indigenous peoples who inhabited most of what is today Argentina. Through semi-structured interviews, it was revealed that although the grammar of the participants’ narratives is generally poor, it is possible to identify in them two clashing groups as agents of that historical process. Furthermore, the participants did not use the pronouns we/us to refer to any of these groups, so they did not identify with them. We conclude that the poverty of the participants’ narratives may reveal a collective attempt to forget this morally condemnable historical process, which would also have been expressed in the shift of responsibility from the Argentine state to other social groups in most of the narratives analysed. Likewise, failure to identify with the victims, even in cases in which it was considered to be the national state, shows the implementation of cognitive strategies to preserve a positive identity.     

A perpetual motion machine: The preserved digital scholarly record

• Digital preservation will never be a solved problem: it needs constant reinvention, and is going to become harder over time.
• Scholarship is changing and this is affecting what needs to be preserved and what preservation means to the future of knowledge discovery.
• The diversification of outputs means that knowledge exists in a network of contextual metadata, data, software, standards and publications—requiring multilateral management of this complex knowledge graph.
• Preservation demands new skills, technologies and resources from librarians, publishers, funders and institutions—and more joined-up thinking about archiving.

     

Distance Learning: Relationships among Class Size,Instructor Location,Student Perceptions,and Performance

This study investigated differences in student perceptions and performance among three distance learning sites taking the same off-campus M.B.A. course with the same instructor, The sites varied in class size and instructor location. Two classes (one large and one small) were linked using a two-way video system with rotating origination. The third class was small and was taught in person each week. Data were collected over an entire semester. Class size influenced performance more than location of instructor. Performance in the two smaller classes was better than performance in the large class. Student characteristics and site variables accounted for over 50% of variance in performance. One interaction effect was found. Students with initial low perceived value did best when the instructor was physically present each week. For students with high initial perceived value, location of instructor did not matter.