[solved] Problems with correct answer and feedback go/no-go task

Socialbear

Hi folks.

I have recently discovered Opensesame and I am currently designing a Go/no-Go task for one of my researches.

My research is about sexuality but I changed the variables to beers/wines and good/bad since it's more fun. The participant will face 4 randomized practice trials and 4 random critical trials. The "Go" responses go with the spacebar, while the "timeout" is for the "no-Go" responses and two kind of feedbacks are shown.

Thanks to tutorials and former threads I managed to create the experiment and solve common issues but still I have some difficulties about it.

-the timeout response is not recognized as a correct one; to solve this I added a bit of coding during my trials but looking at the data it says that the variable "correct" is undefined. This is the code that I used.

-since it does not define a correct response the feedback items that I wanted to show during trials do not work correctly

• I noticed that sometimes it takes two keypress to give an answer (so even for the instructions I have to press the spacebar two times), is there some kind of delay? or is it just me?

I uploaded my experiment so if someone could help me or give some suggestions I am really open to make some changes on it. If I have to code a bit more it's ok, I am used to other softwares but I would prefer to master Opensesame

https://drive.google.com/file/d/0B3uvn7SSuXyZZ1l5azJiS1NUWUE/view?usp=sharing

Thanks for your work!

Aurelio

sebastiaan

Hi Aurelio,

the timeout response is not recognized as a correct one; to solve this I added a bit of coding during my trials but looking at the data it says that the variable "correct" is undefined. This is the code that I used.

When a timeout occurs, response is set to "None", whereas you appear to assume that it's set to "timeout". You can find an example of this here:

• http://osdoc.cogsci.nl/tutorials/capybara/#step-11-define-the-correct-response

I noticed that sometimes it takes two keypress to give an answer (so even for the instructions I have to press the spacebar two times), is there some kind of delay? or is it just me?

There seem to be two things that are a bit odd in your experiment:

• You have a text_display that has a 'keypress' duration, followed by a keyboard_response. This means that you require two key presses: one to end the text_display, and one to end the keyboard_response. In general, you should either set an item's duration to 'keypress', or have the item followed by a keyboard_response, but not both.
• You have a sketchpad with a 840 ms duration, followed by a keyboard_response. This means that, after showing the sketchpad, the experiment pauses for 840 ms, before moving on to the keyboard_response to collect a key press. So keyboard input during that 840 ms interval is lost.

Does that clear things up?

Cheers,
Sebastiaan

Socialbear

Dear Sebastian,

things worked smoothly after your suggestions and hints. Designing during summer vacations could lead to banal issues, but now it does what I want him to do.

Thanks a lot for your help and work

Cheers,

Aurelio