This test was developed in 1951 by American writer and engineer, L. Ron Hubbard, author of the #1 New York Times best selling self-help book, Dianetics: The Modern Science of Mental Health.

The test is evaluated using the Hubbard Chart of Human Evaluation, which is based upon Mr. Hubbard's research on the human mind, emotion and life force.

The chart's vertical scale is called the Tone Scale. This is a graduated scale of emotional tones, or emotional states. Horizontally, the chart lists personality attributes such as communication level, courage level, sexual behavior, ability to experience present time pleasure and one's value as a friend. Therefore, you can see what character traits individuals have at the different emotional tone levels.

This may be interesting in itself, but more importantly this information enables you to accurately predict human behavior — your's and others. Additionally, with knowledge of the level an individual is at, his or her life can be considerably improved through correct application of appropriate techniques.

The Tone Scale

The position of an individual on this Tone Scale varies through the day and throughout the years but is fairly stable for given periods. One's position on the chart will rise on receipt of good news, sink with bad news. This is the usual give and take with life.

Mr. Hubbard found that everyone has a chronic position on the Tone Scale.

To determine your chronic emotional tone level, the test examines 18 different areas of a person's life. The test has been used by millions of people internationally for over 53 years to help them understand themselves, and with Dianetics, live a stress-free and productive life.