This study examined a model in which the purpose of real-name reporting mediated the relationship between modern prejudice toward juveniles and support for real-name reporting of specified juveniles (aged 18 and 19), against the background of the amended Juvenile Act of 2021. To measure the purpose of real-name reporting, we used the scales composed of items relating to the purpose of punishment, namely retribution, general deterrence, rehabilitation, and incapacitation. The model was examined in two studies, and support for the real-name reporting of specified juveniles in general and a specified juvenile in a given hypothetical scenario were examined in Study 1 and 2, respectively. The mediating effects of retribution and incapacitation at the general level, and of retribution, incapacitation, and rehabilitation at the individual level were demonstrated in Study 1 (N=427) and 2 (N=446), respectively. The differences between the findings of the two studies are discussed in terms of the amount of information presented and psychological distance. Different attitudes may have been involved at different levels, even though the theme of support for real-name reporting remained the same.