Log response time for return/enter in inline script

elienbellon

Hi

I have made an experiment in which I use an inline_script.

I want to show my participants a sketchpad and at the same time let them give a multiple character response (i.e., they have to solve arithmetic items which are shown with the sketchpad; answers range from 25-112). They have to submit their answer by pressing the return/enter key.

Using different answers in this forum, I have come up with the following script (remark: my sketchpad is called "StimulusDisplay")

from openexp.canvas import canvas
from openexp.keyboard import keyboard
my_canvas = canvas(self.experiment)
my_keyboard = keyboard(self.experiment)
resp = "" # Here we store the response.
t1 = self.time()
while True:
	# Get a keyboard response
	key, time = my_keyboard.get_key()
	# keyboard.to_chr() converts the keycode to a description,
	# like 'space' or 'return'. If return is pressed the loop
	# should be exited.
	if my_keyboard.to_chr(key) == "return":
		break      
	# Handle backspace by removing the last character
	if my_keyboard.to_chr(key) == "backspace":
		resp = resp[:-1]   
	else:
		# The built-in chr() converts the keycode to a character,
		# like ' ' and '/'.
		resp += my_keyboard.to_chr(key)
	# Copy the canvas from a sketchpad called 'StimulusDisplay' and
	# overlay the response
	my_canvas.copy(self.experiment.items["StimulusDisplay"].canvas)
	my_canvas.text(resp, x=0, y=300)
	my_canvas.show()
# Save the response

rt = time - t1
self.experiment.set("ANSWER", resp)
self.experiment.set("ANSWER_rt", rt)

There are several problems with my script.

1. I am not sure if my response time variable (rt) gives me the response time for when the return key is pressed?
2. My sketchpad disappears after the first key is pressed; i want it to stay until enter/return is pressed
3. I want to use the numbers on the AZERTY keyboard, but I need the shift lock to be forced. I have no idea how to do this.

Sorry, I'm really new to Python.

HUGE THANKS IN ADVANCE!

Elien

eduard

Hi Elien,

Your code used a little outdated syntax of Opensesame, by now things can be done a little easier (see my code below). Also, it is somewhat better to present the sketchpad in the inline_script itself, basically the same way you show the response.

Hope it helps,

Eduard

my_canvas = Canvas()
my_keyboard = Keyboard()
resp = "" # Here we store the response.
question = '25+85 = ?'
my_canvas.text(question, x=0, y=-100)
my_canvas['resp'] = Text('', x=0, y=300)
my_canvas.show()

t1 = self.time()
while True:
   # Get a keyboard response
   key, time = my_keyboard.get_key(timeout = 4)
   if key != None:
      # keyboard.to_chr() converts the keycode to a description,
      # like 'space' or 'return'. If return is pressed the loop
      # should be exited.
      if key == "return":
         break     
      # Handle backspace by removing the last character
      elif key == "backspace":
         resp = resp[:-1]  
         my_canvas['resp'].text = resp
         my_canvas.show()
      elif key == "space":
         pass

      elif key in [0,1,2,3,4,5,6,7,8,9]:
         # The built-in chr() converts the keycode to a character,
         # like ' ' and '/'.
         resp += key
         # Copy the canvas from a sketchpad called 'StimulusDisplay' and
         # overlay the response
         my_canvas['resp'].text = resp
         my_canvas.show()
# Save the response

rt = time - t1
self.experiment.set("ANSWER", resp)
self.experiment.set("ANSWER_rt", rt)