1. Design according to research questions: clearly define research questions and objectives to guide research design and data collection.
2. Ethical principles: ensure that the research process conforms to ethical standards and protect the rights and privacy of preschool children and their families.
3. Suitability and feasibility: Consider the developmental characteristics and abilities of preschool children in the research design to ensure that the research process is feasible and safe for them.
4. Participation and consent of preschool children: obtain the informed consent of preschool children and their families, and maintain appropriate participation according to their abilities and wishes.
5. Choose the appropriate data collection method: Choose the appropriate data collection method according to the research questions and purposes, such as observation, experiment, questionnaire, interview or evaluation tools.
6. Effective sample selection and representativeness: Select appropriate samples according to the research objectives and problems to ensure that the samples are representative and can be extended to a wider group of preschool children.
7. Data analysis and interpretation: Use appropriate data analysis methods, such as descriptive statistics, correlation analysis and regression analysis, to analyze the collected data and explain the results.
Presentation and dissemination of results: prepare clear and accurate research reports or academic papers, disseminate research results to academics and practitioners, and compare and discuss with other studies.
These principles and design guidance can help researchers design and implement research in preschool children's psychology research reasonably and scientifically. In addition, researchers should flexibly use appropriate methods and techniques according to specific research problems and backgrounds.