Return to the Unsolvable Anagrams Task page
___________________________________________________________________________________________________________________	

									       UNSOLVABLE ANAGRAMS
___________________________________________________________________________________________________________________	

Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com) for Millisecond Software, LLC
Date: 03-18-2016
last updated:  03-13-2020 by K. Borchert (katjab@millisecond.com) for Millisecond Software, LLC

Script Copyright © 03-13-2020 Millisecond Software

___________________________________________________________________________________________________________________
BACKGROUND INFO 	
___________________________________________________________________________________________________________________	
This script implements the a task of unsolvable anagrams based on 

Feather, NT & Simon, JG (1971). Attribution of responsibility and valence of outcome in relation 
to initial confidence and success and failure of self and other. Journal of Personality
and Social Psychology, 18, 173-188.

___________________________________________________________________________________________________________________
TASK DESCRIPTION	
___________________________________________________________________________________________________________________
Participants are asked to solve anagrams. The difficulty of the practice as well as test items
is manipulated.											  

___________________________________________________________________________________________________________________	
DURATION 
___________________________________________________________________________________________________________________	
the default set-up of the script takes max. 15 minutes

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

(1) Raw data file: 'unsolvableanagrams_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
script.sessionid:					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 such as feedback trials. Thus, trialnum 
										may not reflect the number of main trials run per block. 

values.practiceDifficulty:			1 = easy practice; 
									2 = difficult practice
									
values.testDifficulty:				1 = easy test; 
									2 = difficult test
																		
stimulusitem:						the presented stimuli in order of trial presentation
values.correctAnswer:				stores the correct answer to the anagram
response:							the participant's response (as recorded)
values.currentResponse:				stores the response (as used for analysis of accuracy)
correct:							the correctness of the response (1 = correct; 0 = incorrect)
latency: 							the response latency (in ms); measured from onset of anagram
values.countAttempted:				counts the number of attempted anagrams during the test


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

computer.platform:					the platform the script was run on (win/mac/ios/android)
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)

values.practiceDifficulty:				1 = easy practice; 
										2 = difficult practice
									
values.testDifficulty:					1 = easy test; 
										2 = difficult test
									
values.countAttempted:					counts the number of attempted anagrams during the test
expressions.propCorrect_practice:		proportion correct solved anagrams during practice
expressions.propCorrect_test:			proportion correct solved anagrams during test
expressions.meanRT_test:				mean lateny of correctly solved anagrams during the test phase
expressions.passORfail:					if more than 7 anagrams were solved correctly during the test phase, the test is passed (otherwise fail)

___________________________________________________________________________________________________________________	
EXPERIMENTAL SET-UP 
___________________________________________________________________________________________________________________	

4 experimental conditions (assignment by groupnumber):
group1 = easy practice, easy test
group2 = easy practice, difficult test
group3 = difficult practice, easy test
group4 = difficult practice, difficult test

Practice Block:
* 5 anagrams (order is randomly determined)
* timeout for each anagram: 
* feedback after each anagram for 500ms	

Test Block:
* 25 anagrams (order is randomly determined)
* timeout for each anagram:
* feedback after each anagram for 500ms

___________________________________________________________________________________________________________________	
STIMULI
___________________________________________________________________________________________________________________	
see section Editable Stimuli
* Practice Items are taken from Feather & Simon (1971)
* 25 test items each for difficult and easy test condition were generated by Millisecond Software.
Note: these test anagrams are untested. You can easily substitute your own.
Note: 1/5 (=5) anagrams for the difficult condition are unsolvable English anagrams

___________________________________________________________________________________________________________________	
INSTRUCTIONS 
___________________________________________________________________________________________________________________	
Instructions are not original to the task. They are provided by Millisecond Software
as htm/html pages and can be edited by changing the provided htm/html files.
To edit htm/html-files: open the respective documents in simple Text Editors such as TextEdit (Mac)
or Notepad (Windows).

___________________________________________________________________________________________________________________	
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:

/anagram_fontsize:					the size of the anagrams in canvas height percentage (default: 5%)
/practiceTimeout:					the timeout for practice items in ms (default: 30000)
/testTimeout:						the timeout for test items in ms (default: 30000)