VVIQ created in 1973 by David Marks. Measures how vividly people see images in mind's eye. Rate scenarios of people, objects, settings. 1 equals no visual image at all. 5 equals as lively as real vision. Proven accurate for imagery extremes including aphantasia. Collects location, city, languages spoken. Asks date of birth, gender, education level. Queries work industry. Supports aphantasia research and community.