External touchscreen not working

[Ludovica]

Hi, I am building my two tasks (a grammaticality judgement task and a sentence-picture matching task) in Psychopy but I am running into an issue.

For both tasks, I have several routines. In each routine, I have added a mouse component for participants to click on either yes/no buttons (grammaticality judgment) or on the relevant picture (sentence-picture matching task). It works perfectly when using the mouse but once I attach to the laptop an external touchscreen, tapping once on the item doesn’t work on the touchscreen - only a double-tap is registered and makes the task move forward. This is an issue as my participants will struggle with fine motor control.

I have tried checking the mouse component but couldn’t find anything that addresses the issue. I have tried adding a code component with the following code, but it still does not enable a single tap with a finger.

code in “Each Frame”
if mouse.isPressedIn(nextButton):
continueRoutine = False

I’m testing on Windows with a standard touchscreen laptop. PsychoPy version 2024.2.4

Thanks in advance for any help!

[stanley1O1]

Hey Ludovica,

Refer to this thread for a possible solution to the touchscreen problem:

Make PsychoPy builder detect touchscreen

OS : Windows 11 PsychoPy version : 2023.2.3 Standard Standalone? : y Hi, I am using PsychoPy builder to run the experiment. I have a touchscreen laptop which I’d like to use for the experiments. In the documentation, it says: Mouse responses register as touch responses on touch screen devices, so they do make for a more portable online study. How do I make the PsychoPy builder detect my touchscreen? Does this work in the standalone program or do I have to pay for the subscription and run …

Specifically the “double-tap” issue:

Using button components on a touchscreen

I have created a visual phone keypad in builder with 12 response button components. They are labeled 0-9, backspace and enter. It works great with mouse clicks, but I run into problems when using the touch screen on a Lenovo laptop. The problem is that I have to double-click all the buttons instead of just a single touch like I would like. I have read a bunch of posts about related topics, but they all seem to be aimed at measuring a response and not which button is pushed. How can I determine …

There is also some documentation in a workshop for implementing touchscreen functionality:

Using mouse/touchscreen responses — Workshops for PsychoPy 2022 2022

Hope this helps.

Issac