Browsing by Author "Luckett, Kathleen Margaret."

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An analysis of differential tests as a predictor for learner performance in first year biosciences.
(2004) Finnie, Jeffrey Franklin.; Luckett, Kathleen Margaret.
This research project aims to establish the predictive validity of a set of aptitude tests for the first year Biosciences programme at a merging South African University. The study aims to address the problem of selection and placement to higher education and also to suggest how the results of aptitude tests might be used to inform curriculum development at first year level. The Differential Aptitude Test (DAT-L) was conducted on the 2004 Biosciences student cohort (228 students). The instructions that were given to the students followed the instructions laid out in Owen and Vosloo (1999). Normally there are ten tests in this battery of tests, however only eight of the tests were given to the students. The tests included; Vocabulary, Verbal reasoning, Non-Verbal reasoning: Figures, Calculations, Reading Comprehension, Comparisons, Price Controlling and Memory. Exam results of the participating students were collected. These included; Final Biosciences101 mark, Class mark (Biosciences101), Practical exam mark (Biosciences101) and Theory exam mark (Biosciences101). The final marks for Physics (mixed modules), Mathematics (mixed modules) Computer Sciences (CSCI 103) and Chemistry (CHEM131) were also collected. The indicator for the concept of academic potential in the Biosciences was taken as the marks achieved during the course of the first semester. Biographical information from the Student Management System (SMS) was also recorded this included; Race, Gender, Home language and Matric points. These various categories were compared against the students' performance in DAT-L tests. The average for the stanine points for a student of university "quality' is seven, according to Owen et al. (2000), while the average of this cohort of students is 5.16. The correlation for the different DAT tests when compared with the final result for Biosciences shows that the best correlation is with test 1 at r = .47292 (Vocabulary) while the worst correlation is with test 6 at r=.24722 (Comparison). The sequence of correlation is from Vocabulary through Reading Comprehension, Verbal Reasoning, Calculation, Memory, Price Controlling, Non-Verbal Reasoning: Figures, and finally Comparisons. The correlation of the average of all tests and the final result is a reasonable r = .50396. The best correlation with DAT and other subjects is Computer Science with r = .41165, with a declining correlation between Physics and the mark of r = .34085 followed by extremely poor correlations for Chemistry and Mathematics of r = .20313 and r = .08700 respectively. The best correlation that was obtained during this research was with the correlation between matric points and the average of all the DAT tests. While the correlation with DAT and the Final mark for Biosciences is r = .50396 that for the matric points is r = .57150. Females attained a significantly higher average on the DAT tests but the difference between female and male on their final results in Biosciences is not significant. White students perform significantly better than the other race designations when it comes to the final result. Within the categories African, Indian and Coloured there is no significant difference. When it comes to the different DAT tests, Africans perform significantly worse than the other three groupings and the Indian grouping did significantly worse when compared to Whites. If we were to use the DAT as a means of selecting students it would be fairly effective for biology but not for the other basic science subjects. The fact that the test would have to be administered to all applicants applying to do first year in the Science and Agriculture Faculty makes the choice of this set of tests questionable. Should the Faculty require a means of determining election into biological subjects then the tests show great promise. The pursuit of greater fairness, validity and reliability in selection is an ongoing quest.
An exploration of the contribution of critical discourse analysis to curriculum development.
(1997) Luckett, Kathleen Margaret.; Chick, John Keith.
This dissertation explores the contribution of critical discourse analysis (CDA) using functional systemic grammar (FSG) to curriculum development in historical studies at university level. The study is premised on an acceptance of Habermas' (1972) theory of knowledge constitutive interests which claims that all knowledge is "interested" and which, on the basis of different interests, identifies three paradigms for knowledge construction. I make use of these paradigms to describe different approaches to curriculum development, to language teaching and to historical studies. I make the value judgement that curriculum development conducted within the hermeneutic and critical paradigms is educationally more valid than that conducted within the traditionalist paradigm; and that this is particularly so for disciplines such as historical studies, which involve the interpretation of texts. Furthermore, I suggest that the epistemological assumptions and the pedagogy of historical studies have developed within the traditionalist paradigm and that postmodernist perspectives pose a challenge to these epistemological foundations. In response, I suggest that the development of a "post-positivist" approach to historical studies within the hermeneutic and critical paradigms may provide a practically feasible and morally defensible strategy for the teaching of history. But this approach involves understanding history as discursive practice and therefore requires a method of discourse analysis in order to "do history". I therefore develop a method of critical discourse analysis for application to historical studies, which uses Halliday's functional systemic grammar (FSG) for the formal analysis of texts. The applied aspect of this dissertation involves a small staff development project, in which I worked with a group of historians to explore the application of the method of CDA to four selected historical texts (using the post-positivist approach to historical studies). I also designed four critical language awareness exercises to demonstrate how the method might be adapted for student use. The findings of my own explorations and of the staff development project are as follows: Firstly, I suggest that the staff development project was successful in that it provided a stimulating and dialogic context for the historians to reflect on their own theory and practice as researchers and teachers of history. Furthermore, I suggest that the method of CDA developed in this study provides a theoretically adequate and practically feasible methodology for post-positivist historical studies. This claim is in part confirmed by the historians' appreciation of the text analyses done using the method. However, the staff development project showed that the method is demanding for non-linguists, largely due to the effort and time required to master the terminology and techniques of FSG. In this sense the staff development project failed to achieve its full potential because it did not provide the historians with sufficient opportunities to learn and practice the techniques of FSG. The CLA materials prepared for students were positively evaluated by the historians, who felt that they demonstrate an accessible and feasible way of introducing CDA to history students. (However, these materials will only be properly evaluated when they are used in the classroom.) Finally, I conclude that this application of CDA to historical studies meets the criteria for curriculum development within the hermeneutic paradigm and that it holds out possibilities for emancipatory practice within the critical paradigm. Secondly, I conclude that the application of CDA to the discourses of other academic disciplines holds enormous promise for work in staff and curriculum development. This study shows how CDA can be used to demonstrate how the epistemological assumptions of a discipline are encoded in the grammar and structure of its discourse. The insights provided by CDA used in this way could be invaluable for a "discourse-across-the-curriculum" approach to staff development at a university.