Here's some broken code. When fixed, it should display wide and narrow rectangles, in random order, and play a bleep sound if you respond 'w' for wide or 'n' for narrow, and buzzing sound otherwise. It should also output the correctness of the response and the RT to standard output (i.e., the python screen). The .wav files it can be downloaded here)
import time
import random
from psychopy import visual, core, event,sound
win = visual.Window([800,600],color="blak", units='pix')
rect = visual.Rect(win,fillColor="blue",size=size)
aspect = {'wide':[200,100], 'narrow':[100,200]}
validKeys = {'wide':'w', 'narrow':'n'}
bleep = sound.Sound('sounds/bleep.wav')
buzz = sound.Sound('sounds/buzz.wav')
for curIter in range(20)
win.flip()
core.wait(.5)
curAspect = random.choice(aspect.values())
rect.setSize(aspect[curAspect])
rect.draw()
win.flip()
timer = core.Timer()
resp = event.waitKeys(keyList=validKeys.values())
if resp==validKeys[aspect]:
print 1, timer.getTime()
bleep.play()
else:
print 0, timer.getTime()
buzz.play()
Here's some more broken code. This program should prompt you with an expression category (Happy, Sad, etc.) and then show a face. If you categorize the face correctly, you should see a green CORRECT. Otherwise a red ERROR. The program should present you with 40 trials. Download the faces here and place them inside a faces folder in the same directory as the script below.
import sys
from psychopy import visual, core, event
categories = {'Happy'='F', 'Angry'='W', 'Sad'='T'}
actors = ['001m', '001w', '002m', '002w', '003m', '003w', '004m', '004w', '005m', '005w']
suffix = '_90_60.jpg'
responseMapping = {'up':1,'down':0}
numTrials = 40
def randomButNot(l,toExclude):
chosen = random.choice(l)
while toExclude in chosen:
chosen = random.choice(l)
return chosen
def generateTrials(numTrials):
trials=[]
propMatch = .6
for i in range(numTrials):
emotionPrompt = random.choice(categories.keys())
shownActor = random.choice(actors)
isMatch = int(random.random()<propMatch)
if isMatch:
shownCategory = emotionPrompt
targetFaceImage = shownActor+categories[emotionPrompt]+suffix
else:
shownCategory = randomButNot(categories.keys(), emotionPrompt)
targetFaceImage = shownActor+categories[shownCategory]+suffix
trials.append({ 'isMatch':isMatch,
'emotionPrompt':emotionPrompt,
'shownActor':shownActor,
'shownCategory':shownCategory,
'targetFaceImage':targetFaceImage
})
return trials
trials = generateTrials(numTrials)
win = visual.Window([800,600],color="black", units='pix')
prompt = visual.TextStim(win=win,text='',color="white",height=60)
correctFeedback = visual.TextStim(win=win,text='CORRECT',color="green",height=60)
incorrectFeedback = visual.TextStim(win=win,text='ERROR',color="red",height=60)
pic = visual.ImageStim(win=win, mask=None,interpolate=True)
for curTrial in trials:
win.flip()
core.wait(25)
prompt.setText(curTrial['emotionPrompt']+'?')
prompt.draw()
win.flip()
core.wait(.5)
win.flip()
core.wait(.1)
pic.setImage('faces/'+curTrial['targetFaceImage'])
pic.draw()
win.flip()
response = event.waitKeys(keyList=responseMapping.values())[0]
if response==responseMapping[curTrial['isMatch']]:
correctFeedback.draw()
else:
correctFeedback.draw()
win.flip()
core.wait(.5)