Several correct touch responses

Candice

Hi!

I was wondering if there is any way to set multiple responses as correct. Specifically, if you are doing a visual search, I would like to have several correct targets on the screen. Is there any way for me to define several correct answers in a loop?

On a similar note, is there any way for me to define the set of allowable responses on a touch response? What I mean is, let's say there are 4 possible quadrants on the screen, is there any way for me to tell OpenSesame to ignore responses to quadrants 1 and 2 but respond to/register 3 and 4?

Thank you!

Pascal

Hi Candice,

Regarding your first question:
How exactly should the procedure look like, if there are multiple correct responses? That is, does the participant only give one answer and this is classified as correct if he / she clicked on say option 2 or 3 and as false if he / she clicked on option 1 or 4? This could be done with a few lines of Python code. And you could define the correct categories for each trial in a loop.

Regarding your second question: I see two options here:

1) Sticking with the touch response item:
I don't think that you can define quadrants that should be ignored. However, you could nest your touch response item in another loop and specify a break if condition that only stops if the click occured on an allowed option.

2) You could try out the mousetrap response item:
The mousetrap response item is actually meant to continously track mouse movements. However, it can also be used for the simple purpose of defining regions on a screen that represent buttons. This could for example be used to define the two quadrants you mentioned as two buttons. If you would like to use the mousetrap_response item you need to install the mousetrap plugin.

Best,

Pascal

Candice

Hi Pascal,

Yes, the participant would only give one response. If that response was in the list of correct responses, then it would be considered correct. I'm not a good python coder (or in general). I've tried a couple of times but was not able to define a variable for "correct response" to look in. I tried to find an example code for this to modify, but I wasn't able to.

I think the first option might work better. Would I define the break if in the box or would I have to modify the script?

Thank you so much!
Also, sorry for my coding ignorance...

Pascal

Hi Candice,

no worries, I think that this is one of the great things about OpenSesame that you can start using it without programming experience.

Before discussing the specific implementation: I assume that the participant has to answers several tasks / trials. Is that so? If so, I would have the following questions (which determine how easy the implementation is):

Regarding the correct responses: does the number of correct responses stay constant across tasks or does it vary?

Regarding the allowed quadrants: does the number and location of the allowed quadrants stay constant for all tasks?

Best,
Pascal

Candice

Hi Pascal,

The number stays the same, but there is a different set of correct answers for each trial.

Yes, the allowed quadrants stays constant.

Basically the idea is:
N N N N N N N N
N Y1 Y1 N N Y2 Y2 N
N Y1 Y1 N N Y2 Y2 N
N N N N N N N N
N N N N N N N N
N Y3 Y3 N N Y4 Y4 N
N Y3 Y3 N N Y4 Y4 N
N N N N N N N N

The N quadrants are never valid responses, the Y quadrants are valid responses grouped by number. So, all of the Y1s are correct responses to trial 1, all the Y2s are correct responses to trial 2 and so on.

Does this make sense?

Candice

When I sent it it wrecked the formatting, maybe this is easier to see:

N N N N N N N N
N 1 1 N N 2 2 N
N 1 1 N N 2 2 N
N N N N N N N N
N N N N N N N N
N 3 3 N N 4 4 N
N 3 3 N N 4 4 N
N N N N N N N N

Pascal

Hi Candice,

to clarify: does what you are sketching represent the grid that should be displayed in each trial?

N N N N N N N N
N 1 1 N N 2 2 N
N 1 1 N N 2 2 N
N N N N N N N N
N N N N N N N N
N 3 3 N N 4 4 N
N 3 3 N N 4 4 N
N N N N N N N N

i.e., does it mean that in each trial an 8 x 8 grid should be presented?

Candice

Hi Pascal,

Yup, exactly!

Pascal

Hi Candice,

in other words, this means that you would like to have a task with four buttons that are separated by spaces from each other. And, in each trial, one of the four buttons represents the correct answer.

If this is true, I think that you should not use the touch response item at all but instead use one of the following options.

1) Create a custom form with four buttons using the form base item. More information on forms in OpenSesame can be found here.

2) In a similar vein, you can also use a mousetrap_form which represents a simplified version of the form base item that also allows you to specify a button containing the correct answer. More information on the mousetrap_form can be found here.

2) If you would like to use a sketchpad to design your screen, you can use a mousetrap_response item to define the four button areas. Here you can also directly specify a correct button for each trial. More information on the mousetrap_form can be found here.