From the personality and behavior scale data for safety (approximately 420,000 people) accumulated over a quarter century, we reanalyzed 5 years' worth of data from approximately 190,000 people for whom permission to use the data for research had been obtained. The purpose of the reanalysis was to report the results of a comparison between Japan and overseas, and to clarify the causal relationship between "low-validity(not answer honestly)" and personality and error tendency. From the comparison between Japan and overseas, some results were shown that the overseas group had many people with low validity and the average values of each tendency were different. It was also shown that the content of the scale needs to be modified to take into account text interpretation and cultural differences.
In addition to interpretation based on the average values by tendency and years of experience, covariance structure analysis and simultaneous multi-population analysis were performed for both the domestic and overseas groups. As a result, regarding the causal relationship with low validity, it became clear that factors such as "mental health" and "self-control" influenced error tendency and other personality traits, indirectly influencing "validity(answer honestly)."