Return to the Generalized Anxiety Disorder (GAD-7) page
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									*Generalized Anxiety Disorder (GAD-7)*
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Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com) for Millisecond Software, LLC
Date: 04-02-2021
last updated: 04-02-2021 by K.Borchert (katjab@millisecond.com) for Millisecond Software LLC

Script Copyright © 04-02-2021 Millisecond Software

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BACKGROUND INFO 	
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This script implements a computerized version of the Generalized Anxiety Disorder (GAD-7) questionnaire
by Spitzer et al (2006).


Reference:
Spitzer, R. L., Kroenke, K., Williams, J. B. W., & Lowe, B. (2006). 
A brief measure for assessing generalized anxiety disorder - The GAD-7. 
Archives of Internal Medicine, 166, 1092-1097.

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OVERVIEW
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The scale consists of 7 4-point Likert scale items.
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DURATION 
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the default set-up of the script takes < 1 min to complete.

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DATA FILE INFORMATION 
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The default data stored in the data files are:

(1) Raw data file: 'gad_7.iqdat'

date, time:							date and time script was run with the current group/subjectnumber 
subject, group, session:	  		 with the current subject/groupnumber/session id
build:								the Inquisit build 

q*_response:						response given (in assigned values)
									Scale: q1-q7: 0 (Not at all) - 3 (Nearly every day)
									Scale: q8: 0 (Not difficult at all) - 3 (Extremely difficult)
									
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)


(2) Summary data file: 'gad_7_summary.iqdat' (Inquisit Lab: one data file per participant)

inquisit.build:						the version/build of Inquisit
computer.platform:					the platform the script was run on (win/mac/ios/android)
script.startdate:					date script was run
script.starttime:					time script was started
script.subjectid:					assigned subject id number
script.groupid:						assigned group id number
script.elapsedtime:					time it took to run script (in ms); measured from onset to offset of script
script.completed:					0 = script was not completed (prematurely aborted); 
									1 = script was completed (all conditions run)

																				
gad_7_totalscore:					Total Score (Range: 0 - 21)
									Spitzer et al (2006, p.1095):
									"A score of 10 or greater on the GAD-7 represents a reasonable cut point for identifying cases of
									GAD. Cut points of 5, 10, and 15 might be interpreted
									as representing mild, moderate, and severe levels of anxiety
									on the GAD-7 [...]"

individual responses: 
Scale: q1-q7: 0 (Not at all) - 3 (Nearly every day)
Scale: q8: 0 (Not difficult at all) - 3 (Extremely difficult)

radiobuttons.q1.response to 
expressions.q8 (*Note: q8 is only presented if participant has indicated any 
possible response > 0 for any of the seven questions. If 
all responses = 0, q8 is automatically scored as 0)

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EDITABLE CODE 
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check below for (relatively) easily editable parameters, stimuli, instructions etc. 
Keep in mind that you can use this script as a template and therefore always "mess" with the entire code 
to further customize your experiment.

The parameters you can change are: