Hi there,
I was wondering if someone could help me program a Psychology Experiment involving a dual-task paradigm. I think two routines need to be run at the same time, with each routine involving the presentation of different stimuli. I was each trial to consist of:
- At the start of the trial an Arithmetic problem is presented in the centre of the screen. The participant presses the spacebar to say that they have solved the problem and then says their answer aloud. When they press the spacebar, the arithmetic problem is removed from the screen.
- Also at the start of the trial, a red square presented in one of 6 locations on the screen for 1 second.
- After 1 second, the square goes away, pauses for 1 second, and then reappears in another, random location. Again, it is presented for 1 second, disappears for 1 second, and then another red square is presented in a different location…This sequence continues until the participant presses a mouse key. When the mouse key is pressed, this red square sequence is terminated.
- The routine ends when both the mouse key and the spacebar have been pressed.
- After each trial the experimenter enters the participants answer to the arithmetic problem on a separate keypad.
The arithmetic problems come from an excel file, and will be presented in a random order.
The square stimuli are also detailed in an excel file, which I want to be presented indefinitely until the mouse click.
Can anyone offer any help?
My script is:
“”"#!/usr/bin/env python2
-- coding: utf-8 --
“”“
This experiment was created using PsychoPy2 Experiment Builder (v1.84.2),
on November 29, 2016, at 15:17
If you publish work using this script please cite the PsychoPy publications:
Peirce, JW (2007) PsychoPy - Psychophysics software in Python.
Journal of Neuroscience Methods, 162(1-2), 8-13.
Peirce, JW (2009) Generating stimuli for neuroscience using PsychoPy.
Frontiers in Neuroinformatics, 2:10. doi: 10.3389/neuro.11.010.2008
"”"
from future import absolute_import, division
from psychopy import locale_setup, gui, visual, core, data, event, logging, sound
from psychopy.constants import (NOT_STARTED, STARTED, PLAYING, PAUSED,
STOPPED, FINISHED, PRESSED, RELEASED, FOREVER)
import numpy as np # whole numpy lib is available, prepend 'np.'
from numpy import (sin, cos, tan, log, log10, pi, average,
sqrt, std, deg2rad, rad2deg, linspace, asarray)
from numpy.random import random, randint, normal, shuffle
import os # handy system and path functions
import sys # to get file system encoding
Ensure that relative paths start from the same directory as this script
_thisDir = os.path.dirname(os.path.abspath(file)).decode(sys.getfilesystemencoding())
os.chdir(_thisDir)
Store info about the experiment session
expName = u’largerimages’ # from the Builder filename that created this script
expInfo = {‘participant’:’’, ‘session’:‘001’}
dlg = gui.DlgFromDict(dictionary=expInfo, title=expName)
if dlg.OK == False:
core.quit() # user pressed cancel
expInfo[‘date’] = data.getDateStr() # add a simple timestamp
expInfo[‘expName’] = expName
Data file name stem = absolute path + name; later add .psyexp, .csv, .log, etc
filename = thisDir + os.sep + u’data/%s%s_%s’ % (expInfo[‘participant’], expName, expInfo[‘date’])
An ExperimentHandler isn’t essential but helps with data saving
thisExp = data.ExperimentHandler(name=expName, version=’’,
extraInfo=expInfo, runtimeInfo=None,
originPath=None,
savePickle=True, saveWideText=True,
dataFileName=filename)
save a log file for detail verbose info
logFile = logging.LogFile(filename+’.log’, level=logging.EXP)
logging.console.setLevel(logging.WARNING) # this outputs to the screen, not a file
endExpNow = False # flag for ‘escape’ or other condition => quit the exp
Start Code - component code to be run before the window creation
Setup the Window
win = visual.Window(
size=(1600, 900), fullscr=True, screen=0,
allowGUI=False, allowStencil=False,
monitor=‘testMonitor’, color=[0,0,0], colorSpace=‘rgb’,
blendMode=‘avg’, useFBO=True)
store frame rate of monitor if we can measure it
expInfo[‘frameRate’] = win.getActualFrameRate()
if expInfo[‘frameRate’] != None:
frameDur = 1.0 / round(expInfo[‘frameRate’])
else:
frameDur = 1.0 / 60.0 # could not measure, so guess
Initialize components for Routine “trial”
trialClock = core.Clock()
Image = visual.ImageStim(
win=win, name=‘Image’,
image=‘sin’, mask=None,
ori=0, pos=(0, 0), size=(2,2),
color=[1,1,1], colorSpace=‘rgb’, opacity=1,
flipHoriz=False, flipVert=False,
texRes=128, interpolate=True, depth=0.0)
Initialize components for Routine “arithmetic”
arithmeticClock = core.Clock()
text = visual.TextStim(win=win, name=‘text’,
text=‘default text’,
font=u’Arial’,
pos=(0, 0), height=0.1, wrapWidth=None, ori=0,
color=u’black’, colorSpace=‘rgb’, opacity=1,
depth=0.0);
Create some handy timers
globalClock = core.Clock() # to track the time since experiment started
routineTimer = core.CountdownTimer() # to track time remaining of each (non-slip) routine
set up handler to look after randomisation of conditions etc
trials_3 = data.TrialHandler(nReps=1, method=‘random’,
extraInfo=expInfo, originPath=-1,
trialList=[None],
seed=None, name=‘trials_3’)
thisExp.addLoop(trials_3) # add the loop to the experiment
thisTrial_3 = trials_3.trialList[0] # so we can initialise stimuli with some values
abbreviate parameter names if possible (e.g. rgb = thisTrial_3.rgb)
if thisTrial_3 != None:
for paramName in thisTrial_3.keys():
exec(paramName + ‘= thisTrial_3.’ + paramName)
for thisTrial_3 in trials_3:
currentLoop = trials_3
# abbreviate parameter names if possible (e.g. rgb = thisTrial_3.rgb)
if thisTrial_3 != None:
for paramName in thisTrial_3.keys():
exec(paramName + ‘= thisTrial_3.’ + paramName)
# set up handler to look after randomisation of conditions etc
trials_2 = data.TrialHandler(nReps=1, method='random',
extraInfo=expInfo, originPath=-1,
trialList=data.importConditions(u'Image_file.xlsx'),
seed=None, name='trials_2')
thisExp.addLoop(trials_2) # add the loop to the experiment
thisTrial_2 = trials_2.trialList[0] # so we can initialise stimuli with some values
# abbreviate parameter names if possible (e.g. rgb = thisTrial_2.rgb)
if thisTrial_2 != None:
for paramName in thisTrial_2.keys():
exec(paramName + '= thisTrial_2.' + paramName)
for thisTrial_2 in trials_2:
currentLoop = trials_2
# abbreviate parameter names if possible (e.g. rgb = thisTrial_2.rgb)
if thisTrial_2 != None:
for paramName in thisTrial_2.keys():
exec(paramName + '= thisTrial_2.' + paramName)
# ------Prepare to start Routine "trial"-------
t = 0
trialClock.reset() # clock
frameN = -1
continueRoutine = True
routineTimer.add(1.000000)
# update component parameters for each repeat
Image.setImage(Images)
# keep track of which components have finished
trialComponents = [Image]
for thisComponent in trialComponents:
if hasattr(thisComponent, 'status'):
thisComponent.status = NOT_STARTED
# -------Start Routine "trial"-------
while continueRoutine and routineTimer.getTime() > 0:
# get current time
t = trialClock.getTime()
frameN = frameN + 1 # number of completed frames (so 0 is the first frame)
# update/draw components on each frame
# *Image* updates
if t >= 0.0 and Image.status == NOT_STARTED:
# keep track of start time/frame for later
Image.tStart = t
Image.frameNStart = frameN # exact frame index
Image.setAutoDraw(True)
frameRemains = 0.0 + 1- win.monitorFramePeriod * 0.75 # most of one frame period left
if Image.status == STARTED and t >= frameRemains:
Image.setAutoDraw(False)
# check if all components have finished
if not continueRoutine: # a component has requested a forced-end of Routine
break
continueRoutine = False # will revert to True if at least one component still running
for thisComponent in trialComponents:
if hasattr(thisComponent, "status") and thisComponent.status != FINISHED:
continueRoutine = True
break # at least one component has not yet finished
# check for quit (the Esc key)
if endExpNow or event.getKeys(keyList=["escape"]):
core.quit()
# refresh the screen
if continueRoutine: # don't flip if this routine is over or we'll get a blank screen
win.flip()
# -------Ending Routine "trial"-------
for thisComponent in trialComponents:
if hasattr(thisComponent, "setAutoDraw"):
thisComponent.setAutoDraw(False)
# completed 1 repeats of 'trials_2'
# set up handler to look after randomisation of conditions etc
trials = data.TrialHandler(nReps=1, method='random',
extraInfo=expInfo, originPath=-1,
trialList=data.importConditions(u'Batch1.xlsx'),
seed=None, name='trials')
thisExp.addLoop(trials) # add the loop to the experiment
thisTrial = trials.trialList[0] # so we can initialise stimuli with some values
# abbreviate parameter names if possible (e.g. rgb = thisTrial.rgb)
if thisTrial != None:
for paramName in thisTrial.keys():
exec(paramName + '= thisTrial.' + paramName)
for thisTrial in trials:
currentLoop = trials
# abbreviate parameter names if possible (e.g. rgb = thisTrial.rgb)
if thisTrial != None:
for paramName in thisTrial.keys():
exec(paramName + '= thisTrial.' + paramName)
# ------Prepare to start Routine "arithmetic"-------
t = 0
arithmeticClock.reset() # clock
frameN = -1
continueRoutine = True
# update component parameters for each repeat
text.setText(Problem)
key_resp_2 = event.BuilderKeyResponse()
# keep track of which components have finished
arithmeticComponents = [text, key_resp_2]
for thisComponent in arithmeticComponents:
if hasattr(thisComponent, 'status'):
thisComponent.status = NOT_STARTED
# -------Start Routine "arithmetic"-------
while continueRoutine:
# get current time
t = arithmeticClock.getTime()
frameN = frameN + 1 # number of completed frames (so 0 is the first frame)
# update/draw components on each frame
# *text* updates
if t >= 0.0 and text.status == NOT_STARTED:
# keep track of start time/frame for later
text.tStart = t
text.frameNStart = frameN # exact frame index
text.setAutoDraw(True)
# *key_resp_2* updates
if t >= 0.0 and key_resp_2.status == NOT_STARTED:
# keep track of start time/frame for later
key_resp_2.tStart = t
key_resp_2.frameNStart = frameN # exact frame index
key_resp_2.status = STARTED
# keyboard checking is just starting
win.callOnFlip(key_resp_2.clock.reset) # t=0 on next screen flip
event.clearEvents(eventType='keyboard')
if key_resp_2.status == STARTED:
theseKeys = event.getKeys(keyList=['space'])
# check for quit:
if "escape" in theseKeys:
endExpNow = True
if len(theseKeys) > 0: # at least one key was pressed
key_resp_2.keys = theseKeys[-1] # just the last key pressed
key_resp_2.rt = key_resp_2.clock.getTime()
# check if all components have finished
if not continueRoutine: # a component has requested a forced-end of Routine
break
continueRoutine = False # will revert to True if at least one component still running
for thisComponent in arithmeticComponents:
if hasattr(thisComponent, "status") and thisComponent.status != FINISHED:
continueRoutine = True
break # at least one component has not yet finished
# check for quit (the Esc key)
if endExpNow or event.getKeys(keyList=["escape"]):
core.quit()
# refresh the screen
if continueRoutine: # don't flip if this routine is over or we'll get a blank screen
win.flip()
# -------Ending Routine "arithmetic"-------
for thisComponent in arithmeticComponents:
if hasattr(thisComponent, "setAutoDraw"):
thisComponent.setAutoDraw(False)
# check responses
if key_resp_2.keys in ['', [], None]: # No response was made
key_resp_2.keys=None
trials.addData('key_resp_2.keys',key_resp_2.keys)
if key_resp_2.keys != None: # we had a response
trials.addData('key_resp_2.rt', key_resp_2.rt)
# the Routine "arithmetic" was not non-slip safe, so reset the non-slip timer
routineTimer.reset()
# completed 1 repeats of 'trials'
thisExp.nextEntry()
completed 1 repeats of ‘trials_3’
these shouldn’t be strictly necessary (should auto-save)
thisExp.saveAsWideText(filename+’.csv’)
thisExp.saveAsPickle(filename)
logging.flush()
make sure everything is closed down
thisExp.abort() # or data files will save again on exit
win.close()
core.quit()"""