Development and evaluation of computer-based techniques for assessing children in educational settings
This thesis reports and discusses an integrated programme of research on computerised assessment in education, focussing on two themes. The aim of the first study was to develop and evaluate a computerised baseline assessment system for four to five year olds (CoPS Baseline). The aim of the second study was to develop and evaluate a computerised dyslexia screening system for the secondary school age group (LASS Secondary). CoPS Baseline was shown to be a reliable and valid assessment of pupils' skills in literacy, mathematics, communication and personal and social development on entry to school at age four or five. It was also found to be predictive of children's later reading, spelling, writing and mathematics ability up to three years after the initial testing. LASS Secondary was shown to be a reliable and valid assessment of students' reading, spelling, reasoning, auditory memory, visual memory, phonological processing and phonic skills from the ages of 11 to 15. It was also seen to be a good indicator of dyslexia, with significant differences between the scores of dyslexic students and non-SEN students on the sentence reading, spelling, auditory memory, non-word reading and syllable segmentation tests. CoPS Baseline and LASS Secondary were also found to be more objective than conventional assessment administered by a person, time-saving in their test administration and scoring, and more enjoyable and motivating for children, particularly children who have specific difficulties. Computer-based techniques have been shown to be beneficial in the assessment of children in educational settings. However, further research is proposed in the areas of: gender and ethnic differences in computerised versus conventional assessment; the addition of reading comprehension, verbal intelligence, mathematics and motor skills tests to the LASS Secondary system; follow-up tests of students assessed on LASS Secondary to provide information about teaching outcomes; and the development of tests suitable for use with deaf / hearing-impaired individuals in order to assess literacy skills and identify dyslexia.