1. Complexity of the research topic: If the research topic itself is very complicated, the doctoral supervisor may expect the thesis to have a deeper theoretical analysis. On the contrary, if the topic is relatively simple, then the requirements of doctoral supervisors for theoretical depth may not be too high.
2. Selection of research methods: Different research methods may require different theoretical depth. For example, qualitative research may require deeper theoretical analysis, while quantitative research may pay more attention to data and results.
3. Academic background and training: The academic background and training of doctoral supervisors will also affect their evaluation of the theoretical depth of the thesis. For example, a doctoral supervisor trained in a philosophy field may have higher requirements for the theoretical depth of the thesis.
4. Characteristics of disciplines: Different disciplines may have different requirements for theoretical depth. For example, social science papers may need deeper theoretical analysis, while natural science papers may pay more attention to experiments and data.
5. Objectives and readers of the thesis: The objectives and expected readers of the thesis will also affect the evaluation of the theoretical depth by doctoral supervisors. If the goal of the thesis is to promote the theoretical development, then the doctoral supervisor may expect the thesis to have a deeper theoretical analysis. If the goal of the thesis is to solve practical problems, then doctoral supervisors may pay more attention to practicality and feasibility.
6. Innovation and originality of the paper: The paper puts forward new theoretical viewpoints or methods, and doctoral supervisors can highly evaluate its theoretical depth. On the contrary, if the thesis only repeats the existing theories or methods, then the requirements of doctoral supervisors for its theoretical depth may not be too high.
7. Logic and coherence of the paper: Even if the theoretical depth of the paper is high, if the logic and coherence are not strong, the doctoral supervisor may question the quality of the paper.