one of the longest-running research topics on the mental image has basis on the fact that people report large individual differences in the vividness of their images. special questionnaires have been developed to assess such differences, including the vividness of visual imagery questionnaire (vviq) developed by david marks. laboratory studies have suggested that the subjectively reported variations in imagery vividness are associated with different neural states within the brain and also different cognitive competences such as the ability to accurately recall information presented in pictures rodway, gillies and schepman used a novel long-term change detection task to determine whether participants with low and high vividness scores on the vviq2 showed any performance differences. rodway et al. found that high vividness participants were significantly more accurate at detecting salient changes to pictures compared to low-vividness participants. this replicated an earlier study.