Return to the The Scale for Suicide Ideation (SSI) page

Script Author: Katja Borchert, Ph.D. ( for Millisecond Software, LLC
Date: 07-25-2014
last updated: 08-15-2016 by K.Borchert ( for Millisecond Software LLC

Copyright © 08-15-2016 Millisecond Software


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.

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.

The default data stored in the data files are:

(1) Raw data file: 'SSI.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)									
q*_latency:						how much time the participant spent on the surveypage with this particular question (in ms)
									(the last time this particular surveypage was visited)

(2) Summary data file: 'SSI_summary*.iqdat' (a separate file for each 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)
/SSI_total:						sum of all response scores (0-38: the answer choice suggesting the least suicide intentions is scored as 0)

* 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_total score is determined based on the sum of all individual scores

Not original, can be easily edited under Editable Parameters

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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