This assignment provides a collection of research methodologies related to tourism and hospitality. It includes studies on social media's impact on hotel service performance, online portrayals of volunteer tourism, and the influence of social media on destination image formation. The assignment also covers classification of psychopathology, unifying theory, and Darwinian paradigm shifts in research methodology. Furthermore, it explores issues and challenges in integrative medical systems for health tourism growth in Nepal. Various studies on social media marketing, ethnography, and critical ethnography are also presented. The assignment aims to provide a comprehensive understanding of research methodologies in the tourism and hospitality industry.