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							*Quick Inventory of Depressive Symptomatology (QIDS SR-16)*
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Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com) for Millisecond Software, LLC
Date: 03-02-2018
last updated:  10-22-2019 by K. Borchert (katjab@millisecond.com) for Millisecond Software, LLC

Script Copyright © 10-22-2019 Millisecond Software

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BACKGROUND INFO 	
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This script implements a computerized version of the Quick Inventory of Depressive Symptomatology (QIDS SR-16) as described in:

Rush, A. J., Trivedi, M. H., Ibrahim, H. M., Carmody, T. J., Arnow, B., Klein, D. K., …
Keller, M. B. (2003). The 16-Item quick inventory of depressive symptomatology
(QIDS), clinician rating (QIDS-C), and self-report (QIDS-SR): a psychometric
evaluation in patients with chronic major depression. Biological Psychiatry, 54,
573-583.

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OVERVIEW
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16 4-multiple choice questions regarding sleep, mood, appetite, concentration and psychomotor behavior
											  
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DURATION 
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the default set-up of the script takes appr. 1 minute 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: 'qids_sr16.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: 0-3) Note: no reversed scored 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)


(2) Summary data file: 'qids_sr1616_summary.iqdat' (Inquisit Lab: one data file per participant)

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.sessionid:					assigned session 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)

/Total:							calcuated as: max score(q1, q2, q3, q4) + q5 + max score(q6, q7, q8, q9) + q10 +
								q11 + q12 + q13 + q14 + max score(q15, q16)
								Range: 0-27
								Suggested Interpretation:
								0-5: no depression
								6-10: mild depression
								11-15: moderate depression
								16-20: severe depression
								21-27: very severe depression
								

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INSTRUCTIONS 
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see section Editable Parameters
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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:

/pageinstructions:			the instructions that appear at the top of each surveypage