Setting the correct answer and compare with response

[filiz gözenman]

Hi Paul,

The problem is my correct answer attribute is also has to be filename of
the stimulus. Correct answer changes every time according to the presented
stimulus, and stimuli are presented randomly from a list. So I had to set
the correct answer attribute as "image1.bmp'. I guess I need an inline
script to convert the responses from keyboard presses (i.e. pressing 1 on
keyboard means selecting image1, pressing 2 on keyboard means selecting
image2 & "image1.bmp"=image1) So that I can compare and calculate accuracy.
However I don't know how to write one.

Filiz


On Mon, Nov 19, 2012 at 12:49 PM, Paul Groot <pfc.groot at gmail.com> wrote:

> Hi Filiz,
>
> Just add another attribute to the trial list. You should have an attribute
> that contains the filename of the stimulus image (i.e. "BmpFile") and
> another for the correct answer (i.e. "CorrectAnswer"). Don't try to combine
> this info into a single attribute value.
>
> In some cases it might be useful to create a small inline script that
> determines the correct answer at runtime and sets the CorrectAnswer
> attribute on the fly. (By mapping the name of the bitmap to a specific key,
> for example.) But only do this when you really have to...
>
> Best
> Paul
>
>
> 2012/11/19 filiz gözenman <filizg at gmail.com>
>
>>  Hello,
>>
>> I have a problem with setting the correct answer. In the trial list the
>> correct answer is set up according to the image name as an attribute. Each
>> time 4 random images are shown and one of the image is the correct answer,
>> so I had to set the correct answer attribute as "image.bmp". I cant set the
>> correct answer as my attribute because it doesn't let me to use ".bmp"
>> list. Also since this is a recall memory experiment, subjects have to press
>> numbers from 1-6 for choosing the stimuli. Thus, their recorded response is
>> just numbers. While the responses are numbers and the correct answers are
>> ".bmp" names I can not compare them and get the accuracy. Is there a simple
>> way to compare the correct answer and responses? What I do is converting
>> both correct answers and responses on excel, but that takes A LOT OF time.
>>
>> Thank you in advance,
>> Filiz
>>
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>>
>
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