___________________________________________________________________________________________________________________ COLOR SHAPE TASK mixed design (Shifting Task) - Spanish Version- ___________________________________________________________________________________________________________________ Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com) for Millisecond Software, LLC Date: 12-11-2018 last updated: 01-18-2023 by K. Borchert (katjab@millisecond.com) for Millisecond Software, LLC Script Copyright © 01-18-2023 Millisecond Software Millisecond Software thanks José Félix Mozo del Castillo for generously sharing his translation! ___________________________________________________________________________________________________________________ BACKGROUND INFO ___________________________________________________________________________________________________________________ This default script implements a simple mixed-design Color Shape Task, a measure of Executive Functioning, based on Miyake, A., Emerson, M.J., Padilla, F., & Ahn, J.C. (2004). Inner speech as a retrieval aid for task goals: the effects of cue type and articulatory suppression in the random task cuing paradigm. Acta Psychologica, 115, 123–142. Friedman, N. P., Miyake, A., Young, S. E., DeFries, J. C., Corley, R. P., & Hewitt, J. K. (2008). Individual differences in executive functions are almost entirely genetic in origin. Journal of Experimental Psychology: General, 137, 201–225. Note: The (almost) full design described by Miyake et al (2004) can be run by Millisecond Software's "colorshapetask.iqx" ___________________________________________________________________________________________________________________ TASK DESCRIPTION ___________________________________________________________________________________________________________________ Participants are presented red or green circles or triangles and have to either sort the stimuli by shape or by color as fast as they can. Participants are given cues before each stimulus appears that inform them which characteristic (color vs shape) to focus on. ___________________________________________________________________________________________________________________ DURATION ___________________________________________________________________________________________________________________ the default set-up of the script takes appr. 10 minutes to complete ___________________________________________________________________________________________________________________ DATA FILE INFORMATION ___________________________________________________________________________________________________________________ The default data stored in the data files are: (1) Raw data file: 'colorshapetask_shifttask_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 such as feedback trials. Thus, trialnum may not reflect the number of main trials run per block. group: Response Key assignment group 1 = red and circle on one response key (default: A) 2 = red and triangle on one respone key (default: A) 3 = red and circle on one response key (default: L) 4 = red and triangle on one respone key (default: L) countPracticeBlocks: a running count of the practice blocks run countTestBlocks: a running count of the test blocks run countTrials: a running count of the trials run in a block (resets after each block) Note: does not count the first trial shape: stores the shape of the current stimulus (circle/triangle) color: stores the color of the current stimulus (green/red) categorization Task: the type of primary task: "Color" vs. "Shape" shifttask: "Shift" vs. "Repeat" SOA: stores the current SOA in ms (stimulus onset asynchrony btw. onset of cue and onset of shape) responsekeymapping: stores whether the mapping of responsekeys for the current shape and color are consistent in mixed task (e.g. consistent = shape AND color are mapped onto same response key) stimulusitem: stores the cue stimulus stimulus: stores the last presented red/green/circle/triangle stimulus response: the participant's response (scancode of response: default 30 -> A; 38 -> L) responseCategory: the interpreted response based on response scancode: Shape trials: "Circle" vs. "Triangle" Color trials: "Red" vs. "Green" correct: the correctness of the response latency: the response latency (in ms); measured from onset of stim (2) Summary data file: 'colorshapetask_shifttask_summary*.iqdat' (a separate file for each participant) inquisit.version: the version/build of Inquisit computer.platform: the platform the script was run on (win/mac/ios/android) startDate: date script was run startTime: time script was started subjectid: assigned subject id number groupid: assigned group id number sessionid: assigned session id number elapsedTime: time it took to run script (in ms); measured from onset to offset of script completed: 0 = script was not completed (prematurely aborted); 1 = script was completed (all conditions run) group: Response Key assignment group 1 = red and circle on one response key (default: A) 2 = red and triangle on one respone key (default: A) 3 = red and circle on one response key (default: L) 4 = red and triangle on one respone key (default: L) countPracticeBlocks: number of practice blocks run practiceACC: proportion correct during the last practice run practicePass: 1 (yes)= participant passed practice (proportion correct >= minPracticeACC = 0.85 by default) 0 (no) = participant did not pass practice (proportion correct < minPracticeACC = 0.85 by default) abortPractice: 1 (yes)= practice is aborted if participant fails practice after max. 5 (default) practice blocks 0 (no)= participant moves on to practice even if practice performance does not reach criterium countTestBlocks: number of test blocks run Summary variables: updated for each test block trial by trial Note: the performance data of the first tasks in each block (trial.firsttask) are NOT included in the summary variables ACC_color.itemCount: counts the number of color trials percentcorrect_color: percent correct of color responses meanrt_color: mean rt of correct color responses ACC_shape.itemCount: counts the number of shape trials percentcorrect_shape: percent correct of shape responses meanrt_shape: mean rt of correct shape responses ACC_repeat.itemCount: counts the number of repeat trials percentcorrect_repeat: percent correct of repeat responses meanrt_repeat: mean rt of correct repeat responses ACC_shift.itemCount: counts the number of shift trials percentcorrect_shift: percent correct of shift responses meanrt_shift: mean rt of correct shift responses switchcost: calculates the switch costs as the mean reaction-time difference between (correct) switch and (correct) repeat trials. positive => it took on average longer to respond to shift trials ___________________________________________________________________________________________________________________ EXPERIMENTAL SET-UP ___________________________________________________________________________________________________________________ DEFAULT SET-UP: (a) Training Block: with error feedback for 1000ms (default) after an incorrect response and before ITI - default: 48 trials (+ plus starttrial) per block; can be set under EDITABLE CODE -> Editable Values -> parameters.numberpracticetrials By default, participants have to reach "minPracticeACC" (default: 85% correct) before they can move on to the test blocks. If participants do not reach the allotted practice performance within 5 (default) practice blocks, the script automatically aborts (by default). Check settings for practice parameters under section EDITABLE PARAMETERS. (b) Test Blocks: no error feedback - 4 test blocks (default, change under section Editable Parameters): - 48 trials (+ plus starttrial) per block; can be set under EDITABLE CODE -> Editable Values -> parameters.numberOfTestTrials Trial Sequence: - The sampling of stimuli is done randomly without replacement - The intertrial interval (ITI) between response and presentation of next stimulus is parameters.iti - a rest trial is presented after parameters.trialstoRest (-> editable value), default: halfway through the block - number of switch and repeat trials in each test block is controlled via EDITABLE CODE -> Editable Lists -> list.shiftrepeat_frequency => default: 50% switch; 50% repeat trials => 24 shift; 24 repeat trials => number of color and number of shape tasks will vary between participants - by default, participants are given performance feedback after each block (-> page.blockfeedback) Trial Sequence: -> Cue for SOA (default: 500ms -> see editable list.SOAs) -> Cue + Shape until response -> blank iti (default: 600ms) Additional notes: *Response key assignment: counterbalanced by groupnumber (4 different groupnumbers) -> set in section EXPERIMENT 1 = red and circle on one response key (default: A) 2 = red and triangle on one respone key (default: L) 3 = red and triangle on one response key (default: A) 4 = red and circle on one respone key (default: L) ___________________________________________________________________________________________________________________ STIMULI ___________________________________________________________________________________________________________________ Stimuli and cues provided by Millisecond Software. The stimuli can be edited under EDITABLE CODE -> Editable Stimuli (item.stimuli, item.cues) Note: This script presents the cues as images. You can run any images you want (e.g. symbols or words or letters). By default, this script runs with letter cues but the script also comes with symbol cue images. ___________________________________________________________________________________________________________________ INSTRUCTIONS ___________________________________________________________________________________________________________________ Instructions are provided by Millisecond Software in the form of htm pages. To edit the instructions edit the relevant *.htm files or replace them with your own under EDITABLE CODE -> 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. The parameters you can change are: