Adjustment dials are attached to adjustable sources of physical force interpretable by the dials as positive and negative decisional influences. One or more of the physical forces are measured by one or more emotional level indicators which also display type or polarity of emotion based on a comparison...http://www.google.com/patents/US4041617?utm_source=gb-gplus-sharePatent US4041617 - Apparatus and method for indication and measurement of simulated emotional levels
