Providing average reaction time feedback and excluding missed trials

Coding
1

Hi I’m trying to provide average Reaction time at the end of the experiment

I got it working with this code

rt_list.append(Response.rt)
rt_array = np.array(rt_list)
mean_rt = rt_array.mean()
text = "You are done with this Block. \n\n Your reaction time was %.3f s " %(mean_rt)

However, I’m facing a problem : the missed trials

I coded:
if Response.keys in [‘’, , None]:
Response.keys = None
Response.rt = 0

But having this 0 messed up with my mean RT.
I tried to replace it by:

    Response.rt = ' '

or Response.rt = ‘None’

but none of this option work since it cannot calculate the mean after . Do you have any input ?

Thanks

2

Hi @Lysianne, would it work to just not append the Response.rt if there was no response?

1 Like
3

For any reason it did not like that no.
But I figured it out basically I just needed to make no-responses coded as np.nan
and then to remove the nan from my mean calculation using np.nanmean()
All good now

Thank you

4

Helll,

Only append the RT when the reaction is correct.

Best wishes Jens