请修缮这段文字要求表达要清晰语法要准确。Qualitative analysis is a method in which researchers use methods such as induction and deduction a literature analysis interviews and observations to process various information o

Qualitative analysis is a research method that involves the use of techniques such as induction, deduction, literature analysis, interviews, and observations to process diverse information and uncover the underlying laws that govern the operation of the research object. Researchers rely on their intuition and experience to make judgments about the nature, characteristics, and development patterns of the object under study.

This paper analyzes literature and relevant examples to identify five speech acts commonly used in public service announcement language. Additionally, it classifies the content types of public service announcement language and provides a clear definition for each category