Return to the The Scale for Suicide Ideation (SSI) page
								
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								*SCALE FOR SUICIDE IDEATION (SSI)*
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Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com) for Millisecond Software, LLC
Date: 07-25-2014
last updated:  10-30-2019 by K. Borchert (katjab@millisecond.com) for Millisecond Software, LLC

Script Copyright © 10-30-2019 Millisecond Software

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BACKGROUND INFO 	
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This script implements a computerized version of the Scale of Suicide Ideation (SSI) as described in:

Beck, AT, Kovacs, M. & Weissman, A. (1979). Assessment of Suicidal Intention: The Scale for Suicide Ideation.
Journal of Consulting and Clinical Psychology, 47, 43-352.

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OVERVIEW
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The SSI is a 19-item instrument to assess suicidal intentions. Each question has 3 answer choices.
Clinician fills out the survey based on a semi-structured interview.

* 19 questions with 3 answer choices each (the answer choice suggesting the least suicide intentions
is scored as 0); question 13 has 4 answer choices (but 2 are weighted the same)
* a SSI Score is determined based on the sum of all individual scores

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DURATION 
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the default set-up of the script takes appr. 5 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: 'ssi.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: 0-2 (anchors vary by question)
									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: 'ssi_summary*.iqdat' (a separate file for each 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))
								
expressions.ssi_total:			sum of all response scores 
									Range 0-38: the answer choice suggesting the least suicide intentions is scored as 0
									=> the higher the score the higher reported suicide intention

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INSTRUCTIONS 
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Not original, can be easily edited under 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