User Manual for Inquisit's PTSD Checklist Civilian Version (PCL-C)

								
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							*PTSD Checklist Civilian Version (PCL-C) - DSM IV checklist*
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Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com) for Millisecond Software, LLC
Date: 03-13-2018
last updated:  02-25-2022 by K. Borchert (katjab@millisecond.com) for Millisecond Software, LLC

Script Copyright © 02-25-2022 Millisecond Software

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BACKGROUND INFO 	
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This script implements the PTSD Checklist Civilian Version (PCL-C) by the 
National Center for PTSD - Behavioral Science Division
The PCL-C is a PTSD Checklist for DSM-IV

Reference:
https://www.ptsd.va.gov/professional/assessment/adult-sr/ptsd-checklist.asp

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TASK DESCRIPTION
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17 5-point Likert scale, self-report

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DURATION 
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the default set-up of the script takes appr. 2 minutes 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: 'PCL_C.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 1-5, no reverse coding required)
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: 'pcl_c_summary.iqdat' (Inquisit Lab: one data file per participant)

inquisit.version:				Inquisit version run
computer.platform:				the platform the script was run on (win/mac/ios/android)
startdate:						date script was run
starttime:						time script was started
subjectid:						assigned subject id number
groupid:						assigned group id number
sessionid:						assigned session id number
elapsedtime:					time it took to run script (in ms); measured from onset to offset of script
completed:						0 = script was not completed (prematurely aborted); 
								1 = script was completed (all conditions run)
									
									
Scoring:for more info, see: https://www.ptsd.va.gov/professional/assessment/documents/PCL-5_Standard.pdf

totalSeverityScore:	the sum of all individual questions (Range: 17 - 85)
								a score of 44 is considered to be PTSD positive in general population
									
DSMIV_criteria:					DSMIV_criteria = 1 (responses reached DSM IV criteria for PTSD)
								=> positive criteriaB, positive criteriaC, positive criteriaD						
								DSMIV_criteria = 0 => the responses did not reach DSM IV criteria for PTSD

criteriaB:						1 (positive for DSM IV criteria B for PTSD): 
								At least one B-item was 'positively' rated (= 3 or above) (B-items: question 1-5)								
								0 = negative for DSM IV criteria B for PTSD
								
criteriaC:						1 (positive for DSM IV criteria C for PTSD): 
								At least three C-item were 'positively' rated (= 3 or above) (C-items: question 6-12)								
								0 = negative for DSM IV criteria C for PTSD	
	
criteriaD:						1 (positive for DSM IV criteria D for PTSD): 
								At least two D-items were 'positively' rated (= 3 or above) (D-items: question 13-17)								
								0 = negative for DSM IV criteria D for PTSD
	

for each individual question (values.q1-values.q17), the raw response score (1-5) was binary coded as 
								1 = the response was 3 or above (participant chose at least 'moderately' for the individual question) => positive
								0 = the response was 1 or 2 => negative
							
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QUESTIONNAIRE SET-UP 
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17 5-point Likert scale, self-report

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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