Script Author: Adnan Niazi (Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen)
Credits:
Millisecond thanks Dr.Niazi for sharing his script!
Last Modified: May 21, 2026 by K. Borchert (katjab@millisecond.com), Millisecond
Script Copyright © Millisecond Software, LLC
This script implements the Vividness of Visual Imagery Questionnaire (VVIQ) by Marks (1973). The VVIQ measures the clarity and vividness of a person's mental imagery (their "mind's eye").
A paper version of this VVIQ is available on David Marks webpage: https://web.archive.org/web/20080615154210/https://www.staff.city.ac.uk/d.marks/vviq.htm
Marks, D.F. (1973). Visual imagery differences in the recall of pictures. British Journal of Psychology, 64(1), 17–24.
7 minutes
participant rates once with eyes open/once with eyes closed the vividness of 16 imagined scenes on a 5-point scale (a glider is used in this script). Each response receives 1 (highest vividness) to 5 (lowest vividness) points.
Max combined score = 5*32 = 160 (low vividness) Min combined score = 1*32 = 32 (high vividness)
The htm instruction pages are provided by Millisecond (build on the instructions by A. Niazi).
They were written to closely resemble the original
(at: https://web.archive.org/web/20080615154210/https://www.staff.city.ac.uk/d.marks/vviq.htm)
while adapting them to the computerized set-up used in this script.
File Name: vviq_summary*.iqdat
| Name | Description |
|---|---|
| startDate | Date the session was run |
| startTime | Time the session was run |
| subjectId | Participant ID |
| groupId | Group number |
| sessionId | Session number |
| elapsedTime | Session duration in ms |
| inquisit.version | Inquisit version number |
| computer.platform | Device platform: win | mac |ios | android |
| computer.touch | 0 = device has no touchscreen capabilities; 1 = device has touchscreen capabilities |
| computer.hasKeyboard | 0 = no external keyboard detected; 1 = external keyboard detected |
| completed | 0 = Test was not completed 1 = Test was completed |
Demographics |
|
| textbox.age.response | Age response of participant |
| radioButtons.gender.response | Gender response of participant |
| textbox.occupation.response | Occupation response of participant |
Vviq Scores |
|
| vviqopeneyes | Range 16-80, the lower the score, the higher the ability to imagine |
| vviqclosedeyes | Range 16-80, the lower the score, the higher the ability to imagine |
| vviqTotal | Range 32-160, the lower the score, the higher the ability to imagine |