Diagram made by uploader to illustrate the Extrovert-Introvert spectrum (or Introvert-Extrovert spectrum), according to uploader's reading of the definition of introversion and extroversion by <a href="https://en.wikipedia.org/wiki/en:Susan_Cain" class="extiw" title="w:en:Susan Cain">Susan Cain</a> in her book <i><a href="https://en.wikipedia.org/wiki/en:Quiet:_The_Power_of_Introverts_in_a_World_That_Can%27t_Stop_Talking" class="extiw" title="w:en:Quiet: The Power of Introverts in a World That Can't Stop Talking">Quiet: The Power of Introverts in a World That Can't Stop Talking</a>.</i> <br>Diagram was not taken from the book.
<a href="//commons.wikimedia.org/wiki/User:RCraig09" title="User:RCraig09">RCraig09</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>