Which of the following is NOT typically part of UX research methods?

Prototyping is not typically considered a part of UX research methods, as it primarily falls under the category of UX design techniques. Prototyping involves creating interactive models of a product to test design concepts, gather feedback on usability, and refine functionalities. It focuses more on the design's implementation and user experience rather than gathering data about user behavior or preferences.

In contrast, surveys, interviews, and observations are fundamental UX research methods. Surveys gather quantitative data on user opinions and experiences, allowing researchers to understand trends and user demographics. Interviews provide qualitative insights into user thoughts and behaviors through direct interaction, offering in-depth understanding of individual user experiences. Observations involve studying users in their natural environment, providing context for how they interact with products or systems. These methods aim to inform the design process based on user needs and behaviors, making them essential components of UX research.