In studying the topic of civility and its association to other parameters, we modified Forni’s Twenty-Five Rules of Considerate Conduct into an inventory for assessing civility. 220 Singapore residents completed an online survey that included a demographic survey, the civility inventory, SCS-R, and REI-40. Self-reported civility was correlated with age (r (214) = .134, p = .049), and experientiality (r (210) = .255, p < .001), but inversely correlated with social anxiety (r (210) = -.172, p = .013). There were no gender effects for civility (p = .014, r = .11), self-consciousness dimensions, and experientiality, even though males scored significantly higher on rationality (p = .013, r = .17). No effects were found for indicators of SES on civility scores. Our findings suggest that social standing may not necessarily be the most important factor as often presumed.