The Edge Annual Question — 2006: WHAT IS YOUR DANGEROUS IDEA? http://www.edge.org/q2006/q06_6.html#harris
Judith Rich Harris: Zitate auf Englisch
The Nurture Assumption, chapter 1, p. 2. http://books.google.com/books?id=-uKBJRMJBjcC&printsec=frontcover#v=onepage&q=%22nurture%22%20as%20a%20synonym%20for%20%22environment%22&f=false http://www.nytimes.com/books/first/h/harris-nurture.html
The Nurture Assumption, chapter 2, p.42 http://books.google.com/books?id=-uKBJRMJBjcC&pg=PA42&dq=%22Birth+order+effects+are+like+those+things+that+you+think+you+see%22&hl=en&ei=KIjcTfOlH6nn0QGpgs3QDw&sa=X&oi=book_result&ct=result&resnum=1&ved=0CCwQ6AEwAA#v=onepage&q&f=false
The Nurture Assumption, chapter 1. http://www.nytimes.com/books/first/h/harris-nurture.html