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								PTSD Checklist Civilian Version (PCL-C) - DSM IV checklist
SCRIPT INFO

Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com) for Millisecond Software, LLC
Date: 03-13-2018
last updated: 03-14-2018 by K.Borchert for Millisecond Software LLC

Script Copyright © 03-14-2018 Millisecond Software


BACKGROUND INFO

											*Purpose*
This script implements the PTSD Checklist Civilian Version (PCL-C) by the 
National Center for PTSD - Behavioral Science Division

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

The PCL-C is a PTSD Checklist for DSM-IV


											  *Task*
17 5-point Likert scale, self-report

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

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

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

q*_response:					response given (in assigned values 1-5)
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)

script.startdate:				date script was run
script.starttime:				time script was started
script.subjectid:				subject id number
script.groupid:					group id number
script.elapsedtime:				time it took to run script (in ms)
computer.platform:				the platform the script was run on
/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_Scoring_Information.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 (q1-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
								
QUESTIONNAIRE SET-UP
17 5-point Likert scale, self-report

INSTRUCTIONS
see section Editable Parameters

EDITABLE CODE:
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

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