Systematic investigation involves carefully planned and structured methods to collect and analyze data. In a systematic investigation, the research question, hypotheses, and methods are all carefully planned and documented in advance, and the research is conducted systematically and rigorously. The goal of a systematic investigation is to ensure that the research is objective, replicable, and valid and that the findings are reliable and unbiased. Systematic investigation is often contrasted with more informal or exploratory research approaches, which may be less structured and more flexible, but may also be less reliable and less rigorous. Systematic investigation is an important approach in many fields, including the natural and social sciences, as it allows researchers to collect and analyze data in a way that is transparent, replicable, and rigorous.

In UX research, systematic investigation typically involves the use of carefully planned and structured methods to collect data about user behavior, attitudes, and preferences. For example, a systematic investigation in UX might involve the use of a survey or experiment to collect data about user attitudes towards a digital product or service, or the use of user analytics to collect data about user behavior on a website or app. By using a systematic investigation approach, UX researchers can ensure that the data they collect is reliable and valid, and that the findings of their research are objective and unbiased. By using systematic investigation methods, UX researchers can also increase the transparency and replicability of their research, which can help to build trust and credibility within the UX community.