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									SLEEP-WAKE ACTIVITY INVENTORY (SWAI)
SCRIPT INFO

Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com) for Millisecond Software, LLC
Date: 02-23-2016
last updated: 04-18-2016 by K.Borchert for Millisecond Software LLC

Copyright © 04-18-2016 Millisecond Software

Millisecond Software thanks Meghan Lee for collaborating on this script!


BACKGROUND INFO

											*Purpose*
This script implements the Sleep-Wake Activity Inventory (SWAI) as described in:

Rosenthal L., Roehrs TA, Roth T. (1993). The Sleep-Wake Activity Inventory: a self-report measure of daytime sleepiness.
Biol Psychiatry, 34, 810-20.

											  *Task*
Participants answer 59 9-point Likert Scale questions. 31 of these questions belong to 6 subscales:
Excessive Daytime Sleepiness (EDS): 9 questions
Psychic Distress (PD): 6 questions
Social desirability (SD): 6 questions
Energy Level (EL): 4 questions
Ability to Relax (AR): 3 questions
Nocturnal Sleep (NS): 3 questions											  


DATA FILE INFORMATION: 
The default data stored in the data files are:

(1) Raw data file: 'SleepWakeActivityInventory.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)
								Note: Recorded Scores reflect reversed scoring where appropriate

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: 'SleepWakeActivityInventory_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)
/EDS_score: 					score for the Excessive Daytime Sleepiness Scale: 9 (high daytime sleepiness)-81 (low daytime sleepiness)
/PD_score:						score for the Psychic Distress Scale: 6 (high psychic distress) - 54 (low psychic distress)
/SD_score:						score for the Social Desirability Scale: 6 (low social desirability) - 54 (high social desirability)
/EL_score:						score for the Energy Level Scale: 4 (high energy) - 36 (low energy)
/AR_score: 						score for the Ability to Relax Scale: 3 (high ability to relax) - 27 (low ability to relax)
/NS_score:						score for the Nocturnal Sleep Scale: 3 (high ability to fall asleep at night)- 27 (low ability to fall asleep at night)
(the recorded raw scores reflect reversed coding where appropriate)

QUESTIONNAIRE SET-UP

The questionnaire consists of 59 9-point Likert questions. 
31 questions score on 6 subscales, the remaining 28 questions are not considered for scoring.

Excessive Daytime Sleepiness (EDS): 9 questions (9, 13, 24, 29, 40, 45, 50, 53, 54); Min 9 (high daytime sleepiness)- Max 81 (low daytime sleepiness)
Psychic Distress (PD): 6 questions (7, 16, 21, 32, 36, 37); Min 6 (high psychic distress) - Max 54 (low psychic distress)
Social desirability (SD): 6 questions (5, 15, 26, 27, 43, 49);  Min 6 (low social desirability) - Max 54 (high social desirability)
Energy Level (EL): 4 questions (8, 14R*, 30R*, 41); Min 4 (high energy) - Max 36 (low energy)
Ability to Relax (AR): 3 questions (34, 38R*, 51); Min 3 (high ability to relax) - Max 27 (low ability to relax)
Nocturnal Sleep (NS): 3 questions (11R*, 18, 35); Min 3 (high ability to fall asleep at night)- Max 27 (low ability to fall asleep at night)

*R: Script takes care of reversed coding where appropriate.

INSTRUCTIONS
see Editable Parameters

EDITABLE CODE:
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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