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										SENTENCE VERIFICATION TASK
SCRIPT INFO

Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com) for Millisecond Software, LLC
Date: 07-29-2016
last updated: 08-01-2016 by K.Borchert (katjab@millisecond.com) for Millisecond Software LLC

Script Copyright © 08-01-2016 Millisecond Software


BACKGROUND INFO 

											*Purpose*
This script implements the Sentence Verification Task described by:

Shtulman, A. & Valcarcel, J. (2012). Scientific knowledge suppresses but does not supplant earlier intuitions.
Cognition, 124, 209–215.

											  *Task*
Participants are presented a variety of statements across several knowledge domains and have to decide 
as fast as possible if these statements are true or false by selecting 'E' for true and 'I' for false.
Some of these statements differ in whether  they are would be judged as 'true' according to a 'naive' 
or a 'scientific' understanding/theory of the subject matter.
  

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

(1) Raw data file: 'SentenceVerificationTask_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) 

/ domain:						domain name tested
/ stimConcept:					concept tested
/ naiveCorrect:					1 = true by naive theory; 0 = otherwise
/ scientificCorrect:			1 = true by scientific theory; 0 = otherwise
/ truthConsistency: 			1 = naive understanding and scientific theory are consistent; 0 = otherwise																		
stimulusitem:					the presented stimuli in order of trial presentation
response:						the participant's response (scancode of responsekey)
/ response:						1 = participant indicated 'true'; 0 = participant indicated 'false'
correct:						the correctness of the response (1 = response correct by scientific theory; 0 = incorrect otherwise)
latency: 						the response latency (in ms)

(2) Summary data file: 'SentenceVerificationTask_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)

Summary Data: correct = correct response according to scientific theory

/propCorrect:					overall proportion correct responses
/meanRT:						overall mean latency (in ms) of correct responses
/SD:							overall standard deviation (in ms) of latencies to correct responses
/propCorrect_truthConsistent:	proportion correct responses of truth consistent statements 
/meanRT_truthConsistent:		mean latency (in ms) of correct responses of truth consistent statements 
/SD_truthConsistent:			standard deviation (in ms) of latencies to correct responses of truth consistent statements
/propCorrect_truthInconsistent:	proportion correct responses of truth inconsistent statements 
/meanRT_truthInconsistent:		mean latency (in ms) of correct responses of truth inconsistent statements 
/SD_truthInconsistent:			standard deviation (in ms) of latencies to correct responses of truth inconsistent statements


* separate data files: to change to one data file for all participants (on Inquisit Lab only), go to section
"DATA" and follow further instructions


EXPERIMENTAL SET-UP

10 domain blocks with 20 trials: 200 trials total
- order of blocks randomized
- each block tests one subject matter domain with 5 concepts x 4 questions per concept (see STIMULI below)
(domain is announced in the instructions presented before each block)
- order of questions within a block randomized
- half the questions are truth-consistent (same response for naive and scientific theory) 
- by default, task is untimed

Note: if fewer than 10 blocks should be run, go to section EXPERIMENT and follow instructions

STIMULI
taken from the published supplemental material of Shtulman & Valcarcel (2012):
10 domains with 5 concepts. Each concept is tested with 4 questions:
- one question is true across scientific and naive theory 
- one question is false across scientific and naive theory
- one question is true by the naive theory but false by the scientific theory
- one question is false by the naive theory but true by the scientific theory

Items can be viewed and edited under section STIMULI below

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.

The parameters you can change are:

/trueResponsekey:				the scancode for the responsekey used for 'true' (default: 18)
/trueResponsekey_label:			the label for the 'true' responsekey (default: E)
/falseResponsekey:				the scancode for the responsekey used for 'false' (default: 23)
/falseResponsekey_label:		the label for the 'false' responsekey (default: I)
/fontsize:						the fontsize of the statements in canvas height percentage (default: 5%)

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