Return to the Lexical Test for Advanced Learners of English (LexTALE) page
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											*LexTALE*
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Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com) for Millisecond Software, LLC
Date: 12-22-2020
last updated:  12-22-2020 by K. Borchert (katjab@millisecond.com) for Millisecond Software, LLC

Script Copyright © 12-22-2020 Millisecond Software

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BACKGROUND INFO 	
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This script implements the LexTALE task by Lemhöfer & Broersma (2012).
'LexTALE stands for Lexical Test for Advanced Learners of English. It is intended for cognitive researchers 
studying participants with an advanced level of English as a second language in an experimental setting.'

For more information: http://www.lextale.com/

Reference

Lemhöfer, K., & Broersma, M. (2012).Behavior research methods, 44, 325-343.
https://doi.org/10.3758/s13428-011-0146-0
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TASK DESCRIPTION	
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Participants are presented 63 testitems (3 practice items, 60 test items) one by one in the middle of the screen
and have to decide if the item is an English word (then press 'yes') or not (press 'no').
The test does not impose any time constraints.

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DURATION 
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the default set-up of the script takes appr. 3.5 minutes 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: 'lextale_raw*.iqdat' (a separate file for each participant)*


build:								The specific Inquisit version used (the 'build') that was run
computer.platform:					the platform the script was run on (win/mac/ios/android)
date, time, 						date and time script was run 
subject, group, 					with the current subject/groupnumber
session:							with the current session id

blockcode, blocknum:				the name and number of the current block (built-in Inquisit variable)
trialcode, trialnum: 				the name and number of the currently recorded trial (built-in Inquisit variable)
										Note: trialnum is a built-in Inquisit variable; it counts all trials run; even those
										that do not store data to the data file. 
										
itemnumber:							the itemnumber of the currently presented testitem 
testitem:							the currently presented testitem 
wordstatus:							the wordstatus of the presented testitem: 1 = word; 0 = nonword

//DVs:
response:							the participant's response: 'yes' vs. 'no'
correct:							accuracy of response: 1 = correct response; 0 = otherwise
latency: 							the response latency (in ms); measured from: onset of testitem

(2) Summary data file: 'lextale_summary*.iqdat' (a separate file for each participant)*

inquisit.build:						the Inquisit build/version run
computer.platform:					the platform the script was run on (win/mac/ios/android)
inquisit.build:						the version/build of Inquisit
script.startdate:					date script was run
script.starttime:					time script was started
script.subjectid:					assigned subject id number
script.groupid:						assigned group id number
script.sessionid:					assigned session id number
script.elapsedtime:					time it took to run script (in ms); measured from onset to offset of script
script.completed:					0 = script was not completed (prematurely aborted); 
									1 = script was completed (all conditions run)
									
Note: summary variables for testitems with itemnumber > 0 									
propCorrect:						proportion correct across of testitems
meanCorrRT:							mean correct response time across testitems						
numberCorrectWords:					number of correctly identified words 
numberCorrectNonwords:				number of correctly identified nonwords 

HITrate:							the hitrate for correctly identifying words
FArate:								the false alarm rate for incorrectly identifying nonwords as words

//main DV:
avg_percent_correct:				averaged % correct. It is calculated as follows:
									((number of words correct/40*100) + (number of nonwords correct/20*100)) / 2												
							
							
* separate data files: to change to one data file for all participants (on Inquisit Lab only), go to section
"DATA" and follow further instructions

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EXPERIMENTAL SET-UP 
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1 testblock with 63 items of which the first three are practice items.
Items (40 words/20 nonwords) are presented in a fixed sequence with no time-constraints.
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STIMULI
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downloaded from: http://www.lextale.com/

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INSTRUCTIONS 
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downloaded from: http://www.lextale.com/

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EDITABLE CODE 
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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: