There is little research on the extent to which experience with and attitudes to computer technologies affect the performance of computerised cognitive tests in the older adult population. The CogSCAN Study, currently in progress, is evaluating the psychometric properties and acceptability of four prominent computerised neuropsychological assessment instruments. This paper describes The CogSCAN Computer Experience and Opinion Questionnaire, an instrument being developed to investigate computer anxiety, comfort with computers, computer self-efficacy, positive and negative attitudes to computers, as well as experience with computers and related technologies in the CogSCAN participants. To date, 105 community-living older adults (72.4% female, mean age 71.2 years, mean years of education 14.8) have participated in CogSCAN. Few participants have reported limited or no experience with computers, and most endorsed items indicating low levels of computer anxiety, high levels of comfort with computers, and positive attitudes to computers. The final version of the questionnaire will have two important applications. First, it will be used to investigate whether older adults’ previous computer experience and current attitudes influence performance on computerised tests, and second, it can be used to contribute to clinical decisions about individual suitability for computerised cognitive testing.