Question

在我的实验中，参与者必须以视觉评定量表进行一系列评分。

首先，我初始化屏幕并添加相应的可视组件。我的变量recall创建了评分量表，提供了2种选择：＆＃34;是＆＃34;和＆＃34;不＆＃34;。

稍后，使用vasTitle变量创建一个标题，询问“你还记得这幅画吗？＆＃39;他们必须回答＆＃34;是＆＃34;或＆＃34;否＆＃34;在与问题相同的屏幕上显示的比例。

现在我想根据参与者是否回答＆＃34;是＆＃34;来调整我的recall声明。或＆＃34;否＆＃34;但我不知道该怎么做。如果参与者回答＆＃34;否＆＃34;我想谈谈他们对之前答案的信心（在这种情况下，这就是问题所在。）

我这样做是通过创建另一个比例，他们必须回答＆＃34;是＆＃34;或＆＃34;不＆＃34;他们对自己以前的回答是否有信心，他们是否回忆起这幅画。当我运行我的代码时，它在我调整recall变量时就会中断。您可以在代码的最后看到我尝试过的内容，但它似乎无法正常工作。

from psychopy import visual

# Intialize screen
win = visual.Window(size=(1440, 900), fullscr=True, screen=0, allowGUI=False, allowStencil=False, monitor='testMonitor', color=[0,0,0], 
colorSpace='rgb', blendMode='avg', useFBO=True, units='deg')

# Initialize Visual Components

recall = visual.RatingScale(win, choices=("Yes", "No"), markerStart=0.5, singleClick=False, 
disappear=False, respKeys=['left', 'right'], showAccept=False, acceptKeys='up')

vasTitle = visual.TextStim(win=win, ori=0, name='vasTitle', text=u'+', font=u'Arial',
pos=[0, 5], height=1.0, wrapWidth=None, color=u'white', colorSpace='rgb', opacity=1,
depth=0.0)

vasScore = visual.TextStim(win=win, ori=0, name='vasScore', text=u'+', font=u'Arial',
pos=[0, -3], height=1.0, wrapWidth=None, color=u'white', colorSpace='rgb', opacity=1,
depth=0.0)

confidence2 = visual.RatingScale(win, low=1, high=6, labels=("Sure I don't know", "Sure I know"), 
marker='glow', markerColor='LightGrey', singleClick=False, noMouse=True,
showValue=False, markerStart = 3.5, showAccept=False,
leftKeys='left', rightKeys='right', acceptKeys = 'up', 
disappear=False)

# Start trial of experiment
for tr in range(1):
# Recall
    recall.reset()
    vasTitle.setText('Do you remember this painting?')
    while recall.noResponse:
        vasTitle.draw()
        recall.draw()
        win.flip()
    showText(text='+', time=0.5, FrameRate=Exp.FrameRate)

    if recall.Response == "No": #PROBLEM HERE
        confidence2.reset()
        vasTitle.setText('How sure are you of your previous answer?')
        while confidence2.noResponse:
            vasTitle.draw()
            confidence2.draw()
            vasScore.setText('%i' %(confidence2.getRating()))
            vasScore.draw()
            win.flip()
        showText(text='+', time=0.5, FrameRate=Exp.FrameRate)

Answer 1

你应该对如何使用这个库做更多的研究。在您的代码recall中是visual.RatingScale的实例。当用户验证确定答案（向上键）时，似乎while recall.noResponse循环结束。当此循环结束时，您可以访问不同的属性：

while recall.noResponse:
    vasTitle.draw()
    recall.draw()
    win.flip()
    # this loop is ended when the 'up' key is pressed to validate the answer
rating = recall.getRating() # Stores the final answer
decisionTime = recall.getRT() # Stores the decision time (sec)
choiceHistory = recall.getHistory() # Stores tulpes of (answer, time)

以下是一些可以帮助您的链接：

github项目https://github.com/psychopy/versions/blob/master/psychopy/visual/ratingscale.py RatingScale（）http://www.psychopy.org/api/visual/ratingscale.html#psychopy.visual.RatingScale

的api doc

if语句条件取决于响应心理

1 个答案: