Exploring the Use of Electroencephalography to Gather Objective Evidence of Cognitive Processing During Problem Solving

Currently, there is significant interest being directed towards the development of STEM education to meet economic and societal demands. While economic concerns can be a powerful driving force in advancing the STEM agenda, care must be taken that such economic imperative does not promote research approaches that overemphasize pragmatic application at the expense of augmenting the fundamental knowledge base of the discipline. This can be seen in the predominance of studies investigating problem solving approaches and procedures, while neglecting representational and conceptual processes, within the literature. Complementing concerns about STEM graduates’ problem solving capabilities, raised within the pertinent literature, this paper discusses a novel methodological approach aimed at investigating the cognitive elements of problem conceptualization. The intention is to demonstrate a novel method of data collection that overcomes some of the limitations cited in classic problem solving research while balancing a search for fundamental understanding with the possibility of application. The methodology described in this study employs an electroencephalographic (EEG) headset, as part of a mixed methods approach, to gather objective evidence of students’ cognitive processing during problem solving epochs. The method described provides rich evidence of students’ cognitive representations of problems during episodes of applied reasoning. The reliability and validity of the EEG method is supported by the stability of the findings across the triangulated data sources. The paper presents a novel method in the context of research within STEM education and demonstrates an effective procedure for gathering rich evidence of cognitive processing during the early stages of problem conceptualization.     

Massive preexposure and preexposure in multiple contexts attenuate the context specificity of latent inhibition

Latent inhibition, which refers to attenuated responding to a conditioned stimulus (CS) after CS-unconditioned stimulus (CS-US) pairings as a result of CS-alone presentations prior to the pairings, is often attenuated if preexposure and conditioning occur in different contexts (i.e., it is context specific). Here we report two conditioned lick suppression experiments, using rat subjects, that examined whether manipulations known to attenuate the context specificity of extinction could also eliminate the context specificity of latent inhibition. Context specificity of latent inhibition was eliminated when the CS was preexposed in multiple contexts (Experiment 1) and when the CS was massively pre-exposed in the training context alone (Experiment 2). These results and their practical implications are discussed in the framework of contemporary theories of latent inhibition.     

Departmental morale as a function of the perceived performance of department heads

The object of this paper is to analyze some of the factors underlying differing levels of morale in university departments. Morale is conceived to be primarily a product of perceived department-head performance, although it is also suggested that environmental and satisfaction variables may be important. Morale is seen as a potential symptomatic attribute which might be used in diagnosing organizational difficulties. The authors did indeed find, using multiple discriminant analysis on departmentally aggregated data, that the perceived performance of department heads was more important in predicting levels of morale. In addition, department size was also found to be useful. The conclusions drawn were that morale could be used as a symptom of departmental (or organizational) well being and that such data could be useful to those managing department heads both in the selection of department heads and in their ongoing supervision.The authors were designated by Western Kentucky University to supervise the collection and analysis of the data described. The data were used with the permission of the Office of the President, Western Kentucky University.     

Economic stress, parenting, and child adjustment in Mexican American and European American families

To assess the impact of economic hardship on 111 European American and 167 Mexican American families and their 5th-grade (M age=11.4 years) children, a family stress model was evaluated. Structural equation analyses revealed that economic hardship was linked to indexes of economic pressure that were related to depressive symptoms for mothers and fathers of both ethnicities. Depressive symptoms were linked to marital problems and hostile parenting. Paternal hostile parenting was related to child adjustment problems for European Americans, whereas marital problems were linked to child adjustment problems for Mexican Americans. Maternal acculturation was associated with both higher marital problems and lower hostile parenting. The utility of the model for describing the effects of economic hardship in Mexican Americans is noted.     

以表演活动带动大学英语教学的互动过程

本文以课堂戏剧表演的形式，探讨在大学英语教学中创设一个生动的学习环境，使学生积极、自然地习得英语。文章介绍了在《新编大学英语》主题式的教学模式下，运用已有教学素材，在学生经过阅读、听、说训练并获得一定量的语言输入的基础上，指导学生开展更高层次的角色扮演(mleplay)，在表演中巩固所学知识，从而达到运用英语进行交际的最终目的，同时也带动了互动式的大学英语课堂教学。     

基于多种通讯机制下的网络教学模式的研究

网络环境是一种集丰富资源及多种通讯工具的多媒体环境 ,该文分析了网络教学中常采用的通讯工具 ,从通讯机制的角度探讨了适用于网络教学的多种教学模式。     

试论美国华裔文学阅读视角问题

美国华裔文学。由于其特殊文化地位以及复杂的文化渊源，既是国内学术界文学研究的热点，同时也是文学阅读和接受中的盲点之一。本文结合当代后殖民及文化研究理论，试图从探讨国内外学者阅读视角问题出发，重新考虑美国华裔文学的定位及其意义：美国华裔文学，作为一种杂体文化的文学形式，是华裔作家坚持自我身份认同、表征自我杂体文化以及抵抗中关两种文化压力的有效途径。     

A case study of scientific reasoning

Concern is increasingly being expressed about the teaching of higher order thinking skills in schools and the levels of understanding of scientific concepts by students. Metaphors for the improvement of science education have included science as exploration and science as process skills for experimentation. As a result of a series of studies on how children relate evidence to their theories or beliefs, Kuhn (1993a) has suggested that changing the metaphor to science as argument may be a fruitful way to increase the development of higher order thinking skills and understanding in science instruction. This report is of a case study into the coordination of evidence and theories by a grade 7 primary school student. This student was not able to coordinate these elements in a way that would enable her to rationally consider evidence in relation to her theories. It appeared that the thinking skills associated with science as argument were similar for her in different domains of knowledge and context. Specializations: science learning, scientific reasoning, learning environments, science teacher education. Specializations: cognition, reasoning in science and mathermatics.     

Engineering design processes in seventh-grade classrooms: bridging the engineering education gap

This paper reports on some findings from the first year of a three-year longitudinal study, in which seventh- to ninth-graders were introduced to engineering education. Specifically, the paper addresses students’ responses to an initial design activity involving bridge construction, which was implemented at the end of seventh grade. This paper also addresses how students created their bridge designs and applied these in their bridge constructions; their reflections on their designs; their reflections on why the bridge failed to support increased weights during the testing process; and their suggestions on ways in which they would improve their bridge designs. The present findings include identification of six, increasingly sophisticated levels of illustrated bridge designs, with designs improving between the classroom and homework activities of two focus groups of students. Students’ responses to the classroom activity revealed a number of iterative design processes, where the problem goals, including constraints, served as monitoring factors for students’ generation of ideas, design thinking and construction of an effective bridge.