Based on our review of the SCD literature, considerations of relevance to the field, and feasibility, we investigate the following ten issues through descriptive and content analysis of SCD-I Working Group measures: (1) number of self-report measures used by participating working group studies; (2) origin of instruments and mode of administration; (3) format and range of response options; (4) timeframe referenced by the items; (5) prevalence of items related to specific cognitive domains; (6) prevalence of items tapping cognitive ability/disability-impairment (and referents of frequency, severity, and impact) versus change or decline (and referents of temporal and atemporal); (7) item specificity and complexity; (8) overlap in measures used by working groups; (9) most commonly occurring items; and (10) considerations driving measure selection and the grouping of questionnaires within a given study. Coding of cognitive self-report items occurred prior to data analysis for research issues 1, 5, 6, 7, 9, and 10. For all coding procedures, working group member LAR carried out the initial coding. Two additional expert raters (working group members CMS and SAMS) subsequently identified items that they considered to be miscoded. Items in dispute were then reviewed and discussed until consensus was reached, occasionally after discussing disputed items with working group member PKC.