There was also a fourth experiment that tested a more complex type of creativity. The tester gives the participants prompts to which they have to respond with complex analogies. The more the analogy captures the deep structure of the prompt, the more it scored on high quality. For instance, in response to the prompt "a robbed safe," a response like "empty wallet" would not score as high on quality as "a soldier suffering from PTSD," which captures the sense of loss, dysfunction and violation.