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THE SELF-ASSESSMENT ANHEDONIA SCALE (SAAS)
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Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com) for Millisecond Software, LLC
Date: 03-23-2023
last updated: 03-24-2023 by K. Borchert (katjab@millisecond.com) for Millisecond Software, LLC
Script Copyright © 03-24-2023 Millisecond Software
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BACKGROUND INFO
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This script implements Millisecond's computerized version of the THE SELF-ASSESSMENT ANHEDONIA SCALE (SAAS)
by Olivares et al (2005). Anhedonia is the reduced ability to experience pleasure.
*Reference*
Olivares,JM, Berrios, GE, & Bousoño, M. (2005).
The self-assessment anhedonia scale (SAAS).
Neurology Psychiatry and Brain Research 12(3):121-133.
DOI:10.1037/t00443-000
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OVERVIEW
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self-report measure consisting of 27 questions, each with 3-point Likert Scales
(intensity, frequency, and change scales)
intensity: slider scale with anchors "A LOT" (0) - "NOT AT ALL" (10) Note: in this script, the anchor "NOT AT ALL" is used instead of 'NOTHING'
frequency: slider scale with anchors "NEVER" (10) - "ALWAYS" (0)
change: slider scale with anchors "SAME AS BEFORE" (0) - "LESS THAN BEFORE" (10)
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DURATION
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the default set-up of the script takes appr. 6 minute 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: 'saas.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)
raw Scale: 0-100
Note: frequency questions are NOT automatically reversed scored in this raw
data file. The summary data file contains the final (reversed) ratings on
a scale from 0-10.
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: 'saas_summary*.iqdat'
inquisit.version: Inquisit version run
computer.platform: the platform the script was run on (win/mac/ios/android)
startDate: date script was run
startTime: time script was started
subjectid: assigned subject id number
groupid: assigned group id number
sessionid: assigned session id number
elapsedTime: time it took to run script (in ms); measured from onset to offset of script
completed: 0 = script was not completed (prematurely aborted);
1 = script was completed (all conditions run)
//summary variables
saas_TOTAL_AnhedoniaScore: sum of all scores (3*27), Range 0-810
saas_Physical_AnhedoniaScore: sum of items 1, 2, 4, 7, 9, 10, 13, 14, 15, 23, 24, 26; Range: 0-360
saas_Intellectual_AnhedoniaScore: sum of items 3, 5, 11, 12, 19, 20, 21, 25, 27; Range: 0-270
Note (KB): q27 seems similar to q14 but was included into this subscale by Olivares et al (2005)
saas_Social_AnhedoniaScore: sum of items 6, 8, 16, 17, 18, 22; Range: 0-180
saas_TIS: sum of all 27 intensity responses ('a'), Range: 0-270
saas_TFS: sum of all 27 frequency responses ('b'), Range: 0-270
Note: the responses were reversed scored before they were added up
saas_TCS: sum of all 27 change responses ('c'), Range: 0-270
//individual responses (a = intensity; b = frequency (reversed scored); c = change)
q1_a: the intensity response to q1 on a scale from 0-10
Example: if RAW response was 84 (out of 100), the score would be 8.4
q1_b: the intensity response to q1 on a scale from 0-10
Note: reversed scored. Example: if RAW response was 84 (out of 100), the reversed score would be 1.6
q1_c: the change response to q1 on a scale from 0-10
Example: if RAW response was 84 (out of 100), the score would be 8.4
(same for q2-q27)
