Anxiety Sensitivity Index - ASI

Technical Manual

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

Created: January 10, 2024

Last Modified: January 25, 2025 by K. Borchert (katjab@millisecond.com), Millisecond

Script Copyright © Millisecond Software, LLC

Background

This script implements Millisecond's computerized version of the Anxiety Sensitivity Index (ASI) by Reiss et al (1986)

References

Reiss, S., Peterson, R. A., Gursky, D. M., & McNally, R. J. (1986). Anxiety sensitivity, anxiety frequency and the prediction of fearfulness. Behaviour Research and Therapy, 24(1), 1–8. https://doi.org/10.1016/0005-7967(86)90143-9

Duration

1.5 minutes

Description

self-report measure consisting of 16 5-point Likert Scale questions

Summary Data

File Name: asi_summary*.iqdat

Data Fields

NameDescription
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
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
asiTotal The sum of all individual scores (range: 0-64)
The higher the score the higher Anxiety Sensitivity

Raw Data

File Name: asi.iqdat

Data Fields

NameDescription
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: 0 (very little) - 4 (very much)
no reversed coded questions
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)