Effects of User Expectation on Independent Visual Background Efficacy

Prior to the Independent Visual Background(IVB) luminance control experiment, we studied that IVB could reduce the simulator sickness depending on subject＇s knowledge about the IVB (expectation group) or non-IVB (no expectation group). As results of experiments from 12 subjects, expectation group＇s RSSQ scores were similar, no matter IVB was present or not. However, non-expectation group＇s RSSQ scores were lower when the IVB were present. The result from this experiment confirms the findings of Duh (2001), that an IVB may alleviate SS. However this effect was found only at the expectation group. Failure to replicate Duh＇s results could be due to several factors, such as individual differences in response to the IVB and the low number of subjects (n=6) in the no expectation group.