The most common type of text structure used in research reports about cultures is a chronological order. This type of structure allows researchers to clearly establish the historical context of a culture and provide a timeline for the development of cultural features and traits. It also provides an opportunity to compare and contrast different aspects of the culture at various points in its history, and to draw conclusions based on these comparisons. The chronological structure also enables researchers to provide a comprehensive understanding of the culture being studied and to tell a cohesive story that unfolds over time.