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MICHIGAN ALCOHOL SCREENING TEST (MAST) - original
Author: Katja Borchert, Ph.D. (firstname.lastname@example.org) for Millisecond Software, LLC
last updated: 04-18-2016 by K.Borchert for Millisecond Software LLC
Copyright © 04-18-2016 Millisecond Software
This script implements the original Michigan Alcohol Screening Test (MAST) with 25 YES/NO questions* for a
self-assessment of social and vocational issues related to heavy drinking as published in:
It was published by:
Selzer, M.L. (1971). The Michigan Alcoholism Screening Test: The quest for a new diagnostic instrument.
Am J Psychiatry, 127, 1653-1658.
* The wording for question 1, 3, 11, 12 was slightly modified for this script
Questionnaire with 25 binary yes-no questions.
DATA FILE INFORMATION:
The default data stored in the data files are:
(1) Raw data file: 'MAST.iqdat' (a separate file for each participant)
The raw questionnaire data are saved under "MAST.iqdat"
numeric scores are saved in values.q1-values.q22 in MAST_summary.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 (in ms) the participant spent on the surveypage with this particular question (the last time this particular surveypage was visited)
(2) Summary data file: 'MAST_summary*.iqdat' (a separate file for each participant)
build: Inquisit build
computer.platform: the platform the script was run on
date, time, subject: date and time script was run with the current subjectnumber
script.elapsedtime: time it took to run script (in ms)
completed: 0 = script was not completed (script aborted prematurely); 1 = script was completed (all conditions run)
Summarydata for each participant: file saves the scores for the subscales and totalscore as well as the
number of missed items and the individual missed items (IF answering the questions is not required - by default it is)
(responses are reversed scored if appropriate)
T alcoholic responses to the different questions are weighted, with the least discriminatory alcoholic
responses receiving a 1, more serious discriminatory responses receiving a 2, and diagnostic responses
receiving a 5
Go to "Editable Parameters" to check/edit the default scoring for this questionnaire
Interpretation (Selzer, 1971)
* Totalscore <= 3: nonalcoholic
* Totalscore = 4 : suggestive of alcoholism
* Totalscore > 4: alcoholism
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:
q1maxscore....q25maxscore: the (maximum) score for the alcoholic response