TMERG Seminars 20th April 2017

TRANSDISCIPLINARY MEASUREMENT & EVALUATION RESEARCH GROUP
(TMERG) SEMINAR 2 & 3, 2017

Date: Thursday 20 April 2017
Time: 10:00am – 11:00am
Where: School of Education, SMaRTe Room, Level 8, Nexus Building, 10 Pulteney Street.
REGISTER: Eventbrite Here

The Transdisciplinary Measurement and Evaluation Research Group (TMERG) has its origins in the School of Education, and provides an avenue for discussion and research collaboration in the field of measurement and evaluation across a number of Schools and Disciplines. Colleagues and postgraduate students (doctoral and master’s) in your School/Research Centres are invited to a seminars titled

SEMINAR 2: The dimensionality of the Advanced Raven’s Progressive Matrices
SPEAKER: Ms Nicolette Waschl:
PhD Candidate, School of Psychology, University of Adelaide: Contact & Research

ABSTRACT: The Raven’s Progressive Matrices tests are a widely used measure of cognitive ability. They are generally considered a measure of fluid reasoning, and often used as a measure of general intelligence (i.e. the score on Raven’s is often equated to something similar to an IQ score). However, there is some evidence to suggest that these tests are not unidimensional, and that they may also measure visuospatial ability, which is a threat to the validity of these tests. The involvement of spatial ability may additionally implicate sex differences in scores.

Therefore, as a first step to investigating the involvement of spatial ability in this test, this work investigated the dimensionality of several different versions of the Advanced Raven’s Progressive Matrices (APM), as well as sex differences on this test. Sample 1 consisted of 1297 individuals (929 females) aged 16-60 years who completed a 12-item short form; sample 2 consisted of 455 individuals (327 females) aged 16-68 years who completed the full APM; and sample 3 consisted of 362 individuals (244 females) aged 17-54 who completed a 15-item short form.

Among other methods, examination of dimensionality of the APM involved the use of the Rasch model to investigate test dimensionality and differential item functioning according to sex. Examination of dimensionality was conducted through PCA of Rasch residuals at the test level and item misfit values at the item level. Differential item functioning was assessed using the item fit and item threshold approaches. Results of the Rasch analysis indicated that all three forms of the APM are unidimensional. There were a small number of items found to exhibit differential item functioning, however these were different items in each sample.


SEMINAR 3: A Complex System Approach to Analyse System Maintenance & Reliability
SPEAKER:    Associate Professor Indra Gunawan:
Director of Project Management Program, Entrepreneurship, Commercialisation and Innovation Centre (ECIC), Faculty of Professions, University of Adelaide. Contact & Research

ABSTRACT: The reliability level of the components dynamically varies over time. This dynamic behaviour should be modeled to provide more accurate information for decision makers on system maintenance and reliability.

In this presentation, a system dynamics approach is employed to reach this goal. System dynamics is a tool to simulate the dynamic interactions in complex systems. In system dynamics, the interactions between elements are modeled by causal loop diagrams (CLDs), stock and flow structures. Therefore, the simulation model can be used to track the variation trends in future.

Systems with both binary and multi-state components are evaluated via system dynamics. As a result, the visual tools of system dynamics are used to model binary and multi-state systems. In addition, some scenarios are investigated through the study.

Further Information: Assoc Prof. Sivakuma Algualai (TMERG coordinator) sivakumar.alagumalai@adelaide.edu.au TMERG website: http://omeka.ersa.edu.au/tmerg/

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