Rasch analysis of three first year approaches to benchmark Chemistry

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Abstract

Rasch Analysis, a statistical and probabilistic analysis tool, is being used to examine chemistry exams across subjects and years; the analysis transforms the raw performance of students and exam questions separately - representing “ability” and “difficulty” respectively - into a common scale of measurement called “logit”. It therefore allows the academic to compare the performance of students versus that of the questions using a single understanding of “performance”. The Rasch approach differs strongly from other approaches - as opposed to other statistical approaches Rasch analysis is suitable to measure a single “construct” or constructs that are likely to be correlated. Unlike its counterparts, once validated, this approach is no longer sensitive to cohort size. As to date there have been few applications of Rasch analysis to the examination of university chemistry assessments. This talk will report on how this method has been used to validate exams, examine the coverage/difficulty across and between four different first year chemistry classes, and examine student's performance from a demographic perspective such as course and gender. These results and insights serve as the first step in bridging to work with exams from other Australian universities to benchmark exams, exam questions, subjects (and perhaps student abilities) between universities.
Original languageEnglish
Publication statusPublished - 2017
EventRACI National Centenary Conference 2017 - Melbourne Convention and Exhibition Centre, Melbourne, Australia
Duration: 23 Jul 201728 Jul 2017
https://web.archive.org/web/20170807115440/http://www.racicongress.com:80/RACIConference/index.php (Conference website)

Conference

ConferenceRACI National Centenary Conference 2017
CountryAustralia
CityMelbourne
Period23/07/1728/07/17
OtherOn behalf of the Organizing Committee, it is my pleasure to invite you to attend the RACI National Centenary Conference 2017 to be held in Melbourne in 2017 (23-28 July 2017). It is a great honour for us to organise an RACI centred event as part of the Centenary Congress that brings together the RACI National Centenary Chemistry Conference and seven international conferences all under one roof.

The RACI National Centenary Conference will be planned alongside the 17th Asian Chemical Congress to cover any subject matter areas not covered by our seven international speciality partner meetings to ensure the complete event will cover all the major areas of the chemical sciences.

All delegates to the congress will be able to attend any of the parallel meetings to move between many differing fields of chemistry. We assure you that the organising committee will do our best towards the achievement of a very memorable scientific event.

The Conference venue is in an excellent position concerning travel requirements. Melbourne is easily reachable from any place of the world. The Conference venue is ideally located in central Melbourne, with easy access to public transport, hotels, restaurants, and bars.

To encourage scientific discussions in less formal environments, special attention will also be paid to the social programme, with a welcome reception, conference dinner and social functions coinciding with the poster sessions. Additionally, many tours in and around Melbourne will be possible to enjoy the cuisine, wines and unique flora and fauna of Australia.

We are very pleased to welcome you to attend this conference in Melbourne and we are sure you will enjoy a pleasant Conference, from both scientific and social points of view.
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