Credits:
Millisecond thanks Dr. Adnan Niazi for sharing the original VVIQ script on which this script is built!
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 2 (VVIQ2) by Marks (1995). The VVIQ2 measures the clarity and vividness of a person's mental imagery (their "mind's eye"). It was developed by Marks to improve statistical reliability, precision, and clarity of the original 1973 questionnaire by doubling the number of items, removing the open-eyes instruction condition, and reversing the scoring scale so that higher numbers indicate higher mental imagery abilities.
Marks, D.F. (1995). New Directions for Imagery Research. Journal of Mental Imagery, 19, 153-167.
Marks, D.F. (1973). Visual imagery differences in the recall of pictures. British Journal of Psychology, 64(1), 17–24.
6 minutes
Participants rate with eyes closed the vividness of 32 imagined scenes on a 5-point scale (a glider is used in this script). (8 scenes with 4 questions each) Each response receives 1 (lowest vividness) to 5 (highest vividness) points.
( the VVIQ2 questionnaire reverses the scales compared to the VVIQ questionnaire)
Max combined score = 5*32 = 160 (high vividness) Min combined score = 1*32 = 32 (low vividness)
The htm instruction pages are provided by Millisecond (build on the instructions by Niazi).
They were written to closely resemble the original instructions for the VVIQ
(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: vviq2_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 |
Vviq2 |
|
| vviq2Total | Range 32 (low ability to imagine) -160 (high ability to imagine) the higher the score, the higher the ability to imagine |
File Name: vviq2*.iqdat
| Name | Description |
|---|---|
| date | Date the session was run |
| time | Time the session was run |
| subject | Participant ID |
| group | Group number |
| session | Session number |
| build | Inquisit version number |
| q*_response | Response given (in assigned values) Scale: 1 (no image at all)- 5 (perfectly clear and vivid) |
| q*_latency | How much time (in ms) the participant spent on the surveyPage with this particular question (the last time this particular surveyPage was visited) |