The Power of Positive Thinking shows, organized the American Foundation of Religion and Psychiatry, and co-founded the spiritual newsletter "Guideposts" with his wife, Ruth Stafford Peale. "The Power of Positive Thinking" was published in October 1952 and continues to be Peale's most widely read work. It lived on the New York Time's best-sellers list for 186 weeks, 48 of which were spent in the No. 1 nonfiction spot. The book sold more than 5 million copies worldwide — 2.5 million from 1952 to 1956 — and was eventually translated into over 40 languages. Other books published by Peale around 1952 include "The Art of Real
Thinking Maps 1988, David Hyerle wrote Expand Your Thinking, which was the first resource where his Thinking Maps were published, and at that point, he began training educators to use his Thinking Maps (Thinking Maps, Inc., 2011). In 1994, test results indicated that "Thinking Maps significantly affect[ed] standardized and qualitative measures of student performance" (Thinking Maps Inc., 2011). After more success and schools nationwide piloting Thinking Maps, ISI changed its name to Thinking Maps, Inc. in 2004 to "better promote its mission" (Thinking Maps, Inc., 2011). Today, thousands of teachers across America have been trained in using and implementing Thinking Maps in