The Pressey X-O test was a psychological test created in 1921 by Sidney L. Pressey.
The test consisted of a list of words.
A subject was instructed to cross out the words on this list that they felt had unpleasant meanings.
[1] It was meant to measure strength and content of emotional responses.
[2] The test was of both low reliability and validity and guidelines for the interpretation of scores were poor.