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									Toronto Alexithymia Scale - 20 (TAS - 20) 

Script Author: Katja Borchert, Ph.D. ( for Millisecond Software, LLC
Date: 03-12-2018
last updated: 07-02-2019 by K.Borchert ( for Millisecond Software LLC

Script Copyright © 07-02-2019 Millisecond Software


This script implements a computerized version of the Toronto Alexithymia Scale - 20 (TAS - 20) as described in:

Bagby RM, Taylor GJ, Parker JDA. The Twenty-Item Toronto Alexithymia Scale: II. Convergent, discriminant, and concurrent validity.
J Psychosom Res 1994;38:33 – 40.

20 5-point likert scale, self report

The default data stored in the data files are:

(1) Raw data file: 'TAS20.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); reversed scored items already reversed scored
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: 'TAS20_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)

/Total:							Total Score: sum of all responses (Range: 20-100), 
								the higher the score the higher the level of reported alexithymia

/DIF:							Difficulty to Identify Feelings: sum of (q1, q3, q6, q7, q9, q13, q14) (Range: 7-35)
/DDF:							Difficulty to Describe Feelings: sum of (q2, q4R*, q11, q12, q17) (Range: 5-25)
/EOT:							Externally-Oriented Thinking: sum of (q5R, q8, q10R, q15, q16, q18R, q19R, q20) (Range: 8-40)
								*R = reversed scored

20 5-point likert scale, self report

see section 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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