The research area of co-survey involves conducting surveys or questionnaires with two or more parties or groups simultaneously. This method allows researchers to gather data and insights from multiple perspectives or populations, which can provide a more comprehensive understanding of a particular topic or issue. Co-surveys can be used in various research fields, such as psychology, sociology, business, and education, to collect data from different stakeholders or groups with varying perspectives. This approach is valuable for comparing responses, identifying patterns or trends across different groups, and gaining a more nuanced understanding of complex phenomena.