[3PS/CV] Berkeley的Personal History Statement的疑问

如题。以前在地里看见ljcljc的帖子，Berkeley关于这个Personal History Statement有好几种要求：. 牛人云集一亩三分.地
Your Personal History Statement should convey how a combination of life experiences, idealism, role models, education, and work experiences have influenced your decision to apply.
. From 1point 3acres bbs
Personal History Statement

Required of all applicants. Please note that the Personal History Statement should not duplicate the Statement of Purpose.

Please describe how your personal background informs your decision to pursue a graduate degree. Please include information on how you have overcome barriers to access higher education, evidence of how you have come to understand the barriers faced by others, evidence of your academic service to advance equitable access to higher education for women, racial minorities, and individuals from other groups that have been historically underrepresented in higher education, evidence of your research focusing on underserved populations or related issues of inequality, or evidence of your leadership among such groups.
这个到底应该怎么写？写过去的经历的话感觉和Statement of Purpose重复了，如果不能重复的话那我写的经历又和申请的方向无关。。。
现在正好想问同样的问题，不知为什么下面没法回复。
好想看看端木的PHS的结构，但就是打不开，所以重新发个帖子问一下。以下是端木写得：
这里有篇sample：
.--http://ls.berkeley.edu/soc/diver ... onalstatement1.html
端木的PHS大致结构如下 (674个单词，生成的PDF是 2 pages with 11 pt and double spacing，字数仅供参考)：
以下内容需要积分高于 100 才可浏览

我的PHS不在网上的，里面个人信息太多了。。。。我讲了自己的一些经历，解释了下背景中不传统的几点，也说明为什么会对统计感兴趣
传到地里的是statement of purpose

当年找到的例子是这个：
http://diversity.ls.berkeley.edu ... onalstatement1.html

回复 1# rongrong

我也很困惑这个其实， 感觉有和ps重复的倾向~

我的PHS不在网上的，里面个人信息太多了。。。。我讲了自己的一些经历，解释了下背景中不传统的几点，也说明为什么会对统计感兴趣
传到地里的是statement of purpose

当年找到的例子是这个：
duanmupeiyi 发表于 2011-10-31 02:47

谢谢端木的回复。好激动!因为我的背景与你有些像,一开始也是读的药学,后来转专业,再到美国读本科, 只是没有你这么清晰的职业规划, 我是为了读书再到美国,希望能申请的时候有个优势.端木MM信息量很大,掌握的知识面很广,又有深度,真值得好好学习.