问题: I just wonder should I mention some deficiencies to answer why I want to pursue further study in certain program in PS?

回答：

You should absolutely mention your development needs when preparing your application! The purpose of applying for a graduate program is to learn new things and improve your ability to face up to the challenges and goals that motivate you! You should certainly be using your PS as an opportunity to make your case: which means showing you have the skills, aptitudes, maturity, motivations, and depth of understanding to complete the program. So you shouldn’t be saying anything that undermines this! However, identifying your learning goals and development objectives and explaining how the program will help you to achieve them is a really important part of making your case.

Somewhat unconnected to your answer, but also somewhat relevant: If the instructions for your PS ask you to identify any problems or shortfalls with your application, and to explain those, then obviously you should do so. Don’t however overanalyze and worry about issues in your background that may not in fact prove to be a problem. I’ve encountered people with isolated low grades from years ago that they feel compelled to mention, unprompted. By doing so, you’re simply drawing attention to something that probably isn’t even a problem in the first place. So, if you’re worrying about actual deficiencies—as in problems—well, get some perspective on them. If they really are problems, figure out a smart way to explain them that demonstrates your progress and growth.

Capacity to make progress. Learning skills. Showing those is what this is all about! “The definition of being uneducated is not knowing how to carry on learning” is a famous quote by a former CEO of Xerox Corporation (which was very committed to developing its workforce, I believe). It’s famous because it’s true. Use your PS your readiness, ability, motivation to keep on learning at the school you’re applying to. “Development needs” and even “deficiencies” can indeed be a part of the case you are going to make!