The Reward-Based Eating Drive Scale - RED-13

Technical Manual

Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com), Millisecond

Created: January 26, 2023

Last Modified: January 26, 2023 by K. Borchert (katjab@millisecond.com), Millisecond

Script Copyright © Millisecond Software, LLC

Background

This script implements Millisecond's computerized version of The Reward Based Eating Drive (RED) Scale (13 item scale)

Survey downloaded from: https://www.sealab.ucsf.edu/red-scale

References

Mason, A.E., Vainik, U., Acree, M., Tomiyama, A.J., Dagher, A., Epel, E.S., & Hecht F.M. (2017). Improving assessment of the spectrum of reward-related eating: The RED-13. Frontiers in Psychology, May 30;8:795.

Duration

2 minutes

Overview

self-report measure consisting of 13 5-point Likert Scale questions

Summary Data

File Name: red_summary*.iqdat

Data Fields

NameDescription
inquisit.version Inquisit version number
computer.platform Device platform: win | mac |ios | android
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
completed 0 = Test was not completed
1 = Test was completed
red13Total Sum of all individual scores (Range: 0-52), rated on scale 0 (Strongly Disagree) - 4 (Strongly Agree)
+ all individual responses

Raw Data

File Name: red.iqdat

Data Fields

NameDescription
date Date the session was run
time Time the session was run
subject, group, session With the current subject/groupnumber/session id
build Inquisit version number
q*_response Response given (in assigned values)
Scale: 0 (Strongly Disagree) - 4 (Strongly Agree)
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)