Difference btw Reaction Time and Timestamp. (case 18891)

Hello :)

I got the fill-in-the blank data by 'writing RT' and using 'Timestamp (@)' between two questions.

When I read the Help documentation,[U] "response times is the time the subject continues to the next item[/U],
and in Timestamp.csv, it includes the subject id, the variable name, the time at which the item *started* (e.g., 12:23:22), the milliseconds elapsed from the beginning of the experiment and [U]the milliseconds passed since the last timestamp".
[/U]
I didn't get the difference btw RT and "the milliseconds passed since the last timestamp".

Numbers are slightly different. (e.g., RT=4490; milliseconds passed since the last timestamp=4880)

Can I get more information regarding Reaction Time and Timestamp?

Best Regards.

Did you get the reaction time and timestamp both from MediaLab?

Yes I did :D

Great. Just to make sure that I give you the proper interpretation, please send me a copy of both the output file with the time data and the .que file that created it. You can send them to me directly at [email]support@empirisoft.com[/email]. Please reference case 18891 in the email.

The reaction times are the amount of time MediaLab records from the beginning of the opportunity to answer unitl the time a valid response is recorded for that item (i.e., appropriate answer choice button selected for a scale repsonse item; pressing of the return key for an essay item). The information in the timestamp.csv file shows when items that use the @ parameter in the .que file are first presented.

Thank you so much :) It is really helpful for me.

My pleasure. Good luck!