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							Automated Operation Span Task (AOSPAN)
SCRIPT INFO

Main Inquisit programming: David Nitz (dave@millisecond.com) for Millisecond Software, LLC.
Additional Inquisit programming: Jerry Grenard (grenard@ucla.edu), Sean Draine (seandr@millisecond.com)

last updated: 01-20-2016 by K.Borchert (katjab@millisecond.com) for Millisecond Software LLC

Script Copyright © 01-20-2016 Millisecond Software
Task Copyright © 2005 by Dr. Randall Engle (http://psychology.gatech.edu/renglelab/)


BACKGROUND INFO

											*Purpose*
This script implements the Automated Operation Span Task (AOSPAN).

Working Memory Span Tasks Reference:
CONWAY, A.R.A., KANE, M.J.,BUNTING, M.F., D. ZACH HAMBRICK, D.Z., WILHELM, O., & ENGLE, R.W. (2005).
Working memory span tasks: A methodological review and user’s guide. Psychonomic Bulletin & Review
2005, 12 (5), 769-786.


											  *Task*
Participants are presented a visual sequences of letters ranging from 3-7 letters (default) that need to be recalled at the end.
Each letter in the sequence in preceded by a math problem ("(8*2) - 8 = ?") followed by a proposed solution ("e.g. 9") 
and participants have to decide whether the proposed solution is correct or not. 
Letter recall is tested by asking participants to selecte letters from a provided letter matrix.	


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

(1) Raw data file: 'AOSPAN_raw.iqdat' (a separate file for each participant)

build:							Inquisit build
computer.platform:				the platform the script was run on
date, time, subject, group:		date and time script was run with the current subject/groupnumber 
blockcode, blocknum:			the name and number of the current block
trialcode, trialnum: 			the name and number of the currently recorded trial
									(Note: not all trials that are run might record data; by default data is collected unless /recorddata = false is set for a particular trial/block) 
stimulusitem:					the presented stimuli in order of trial presentation
response:						the participant's response
correct:						the correctness of the response (1 = correct; 0 = incorrect)
latency: 						the response latency (in ms)
/currentsetsize: 				the number of letters to recall for the current problem
text.letters.currentitem: 		the currently presented letter
/mathproblemcount: 				counts the number of math problems in a given block
text.MathProblem.currentitem: 	the currently presented math problem
/mathtrueanswer:				the correct math answer
/mathanswer:					the math response given
/mathcorrect:					1 = correct math response; 0 = incorrect math response
/matheaccuracy: 				percentage of correctly solved math problems within the current block
/mathtotalerrors: 				counts number of any errors (speed or accuracy) made during math problems within the current block
/mathaccerrors: 				counts the number of incorrectly solved math problems within the current block
/mathspeederrors: 				counts the number of times participant ran out of time when solving the math problems within the current block
/recalledletters: 				the number of letters recalled of the current problem
/ospan:							The OSPAN score, uses the traditional "absolute ospan" scoring method. 
								It is the sum of all perfectly recalled sets. 
										So, for example, if an individual recalled correctly 2 letters in a set size of 2,
										3 letters in a set size of 3, and 3 letters in a set size of 4,
										their OSPAN score would be 5 (2 + 3 + 0).
/totalcorrectletters: 			the total number of letters recalled in the correct position.
/totalrecalledsets: 			the number of correctly recalled sets

(2) Summary data file: 'AOSPAN_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)
/totalcorrectletters: 			the total number of letters recalled in the correct position.
/mathtotalerrors: 				counts number of any errors (speed or accuracy) made during math problems within the current block
/mathaccerrors: 				counts the number of incorrectly solved math problems within the current block
/mathspeederrors: 				counts the number of times participant ran out of time when solving the math problems within the current block
/ospan:							The OSPAN score, uses the traditional "absolute ospan" scoring method. 
									It is the sum of all perfectly recalled sets. 
									So, for example, if an individual recalled correctly 2 letters in a set size of 2,
									3 letters in a set size of 3, and 3 letters in a set size of 4,
									their OSPAN score would be 5 (2 + 3 + 0).
/totalcorrectletters: 			the total number of letters recalled in the correct position.


EXPERIMENTAL SET-UP
1 Practice Session (default):
	a) Practice of recalling sequences of letters of set sizes 2-3 in ascending order (4 trials)
	b) Practice of math task (15 trials)
	c) Combined practice of recalling sequence of letters (set size 2 only) and math problem: each letter is 
	preceded by a math problem (3 trials)
	Letter recall is done by picking out letters from a provided letter matrix.

Test Session (default):
	15 Trials (15 = 3 repetitions of 5 set sizes; order of set sizes is randomly determined): 
	Recalling sequences of letters (set size 3-7): each letter is preceded by a math problem;
	Letter recall is done by picking out letters from a provided letter matrix.

Scoring:
The program reports five values at the conclusion of the experiment: 
	
The first, OSPAN score, uses the traditional "absolute ospan" scoring method. 
It is the sum of all perfectly recalled sets. 
So, for example, if an individual recalled correctly 2 letters in a set size of 2,
3 letters in a set size of 3, and 3 letters in a set size of 4,
their OSPAN score would be 5 (2 + 3 + 0).

Total number correct is the total number of letters recalled in the correct position
(2 + 3 + 4 = 9 in the above example). 
	
Math errors are reported as total number of errors, 
accuracy errors where the subject solved the operation incorrectly, 
and speed errors in which the subject ran out of time 
in attempting to solve a given operation.

STIMULI:
Letters: T, L, Q, N, F, H, Y, S, P, K, R, J
Math Problems (test): created on runtime; only math problems with a *true* result >= 0 are allowed in the task

INSTRUCTIONS
see section Editable Instructions

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.

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