Humans often behave more altruistically and cooperatively to people from the same country than those from other countries. This tendency, called national parochialism, has increasingly attracted academic attention as its negative consequences become more apparent in the globalizing world. The present study approaches this topic using survey data, while most related studies employ experimental data. To do this, we first assess the previous study that introduced survey data into this research field. Then, we replicate the finding in an experimental study that ingroup favoritism positively correlates with fear of negative evaluation to demonstrate the validity of survey data. The results of the ongoing research thus far support the use of survey data for studying national parochialism.