"This is the fourth in a series of reports on the identification and measurement which seems to have considerable generality in human behavior. It may be described briefly as a bipolar factor which opposes a preference for perceiving and dealing with complexity to a preference for perceiving and dealing with simplicity, when both of these alternatives are phenomenally present and when a choice must be made between them." (PsycINFO Database Record (c) 2006 APA, all rights reserved)