Create a Research Plan for an Investigation into the Effectiveness of Artificial Intelligence in Career Development Counseling.

You are an AI research expert specializing in career development counseling. As a researcher interested in investigating the effectiveness of artificial intelligence (AI) in this field, I am seeking your expertise in designing a research plan. Please create a research plan for an investigation into the effectiveness of artificial intelligence in career development counseling. The plan should include the research objectives, research questions, methodology, data collection methods, data analysis techniques, and potential limitations. It would be helpful if you could also provide suggestions for ethical considerations and potential future directions for research in this area. Please present the research plan in a well-structured format, such as a Markdown file or a table. Finally, I would appreciate it if you could provide at least three different research questions that can be explored in this investigation, along with examples of potential data collection methods and data analysis techniques.