Millisecond Forums » Millisecond Forums » Inquisit 3 » responsetime

responsetime

vz29 — Thu, 09 Jul 2020 10:59:05 GMT

Am I right that in the syntax pasted below, a trial starts with a 250 ms pretrial pause, a fixation cross (1000 ms), target photo (200 ms), which is replaced by a blank screen.
Participants are able to make a response starting at 1000 ms (immediately when the target photo is presented).
If a P makes a response, then there is a 250 ms post trial pause, and the new trial begins.If a P does not make a response, then Inquisit waits for 2200 ms after the response was allowed (1000 ms) and terminates the trial. (Note in the Inquisit documentation, I found that for timeout “the duration begins as soon as Inquisit begins waiting for a response (by default, this is at the end of the stimulus presentation sequence.”

<trial standardmale1a>/ validresponse = (" ")/ validresponse = (noresponse)/ correctresponse = (noresponse)/ stimulustimes = [0 = fixation; 1000 = blank, SM, LPT1_standardmale1a_on, LPT1_send1, LPT1_reset1; 1200 = blank, respondcue]/ responsetime = 1000/ timeout = 2200/ trialdata = [SM]/ responsetrial = (noresponse, noresponse_corr)/ responsetrial = (" ", spacebar_err)</trial>
<block frownmen1a>/ preinstructions = (frownmeninstruct1, meninstruct2)/ trials = [1=block_start; 2-134=noreplace(standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a); 135=block_end]</block>
<expt 1 of 2>/ blocks = [1=moodbaseline; 2=rejrecallstart; 3=rejrecall9; 4=moodpostcue1; 5=frownmen1a; 6=frownmen1b; 7=frownmen1c; 8=moodposttask1; 9=rejrecall9; 10=moodpostcue2; 11=frownwomen2a; 12=frownwomen2b; 13=frownwomen2c; 14=moodposttask2; 15=demographics; 16=end]/ preinstructions = (preintro)/ subjects = (1 of 2)</expt>
<defaults>/ font = ("Arial", -32, 700, 0, 34)/ screencolor = (128,128,128)/ txcolor = (0, 0, 0)/ pretrialpause = 250/ posttrialpause = 250/ endlock = true("Please let the experimenter know that you have finished the task.")</defaults>

RE: responsetime

Dave — Thu, 09 Jul 2020 10:59:05 GMT

+x[quote]

[b]vz29 - 7/9/2020[/b]
Could you clarify one more point? Given the syntax, if the P makes a response within the 950 ms period following the onset of the target stimulus, does the trial immediately end, or does it wait the full 950 ms before ending
[/quote]

Upon response, the trial immediately enters its 250ms posttrialpause.

RE: responsetime

vz29 — Thu, 09 Jul 2020 10:04:22 GMT

Could you clarify one more point? Given the syntax, if the P makes a response within the 950 ms period following the onset of the target stimulus, does the trial immediately end, or does it wait the full 950 ms before ending

RE: responsetime

Dave — Wed, 08 Jul 2020 14:09:10 GMT

+x[quote]

[b]vz29 - 7/8/2020[/b]
Given the syntax, could you clarify how long Ps have to make a response? That would be useful.
[/quote]

the 2200ms /timeout starts ticking with the start of the pretrialpause. So you have 250ms pretrialpause + 1000ms into the stimulus presentation sequence when the trial starts accepting responses per your /responsetime.

That means participants will have 950ms to give a response.

2200 - 250 - 1000 = 950.

RE: responsetime

vz29 — Wed, 08 Jul 2020 13:35:08 GMT

Given the syntax, could you clarify how long Ps have to make a response? That would be useful.

RE: responsetime

Dave — Tue, 07 Jul 2020 17:39:42 GMT

+x[quote]

[b]vz29 - 7/7/2020[/b]
Am I right that in the syntax pasted below, a trial starts with a 250 ms pretrial pause, a fixation cross (1000 ms), target photo (200 ms), which is replaced by a blank screen.
Participants are able to make a response starting at 1000 ms (immediately when the target photo is presented).
If a P makes a response, then there is a 250 ms post trial pause, and the new trial begins.If a P does not make a response, then Inquisit waits for 2200 ms after the response was allowed (1000 ms) and terminates the trial. (Note in the Inquisit documentation, I found that for timeout “the duration begins as soon as Inquisit begins waiting for a response (by default, this is at the end of the stimulus presentation sequence.”

<trial standardmale1a>/ validresponse = (" ")/ validresponse = (noresponse)/ correctresponse = (noresponse)/ stimulustimes = [0 = fixation; 1000 = blank, SM, LPT1_standardmale1a_on, LPT1_send1, LPT1_reset1; 1200 = blank, respondcue]/ responsetime = 1000/ timeout = 2200/ trialdata = [SM]/ responsetrial = (noresponse, noresponse_corr)/ responsetrial = (" ", spacebar_err)</trial>
<block frownmen1a>/ preinstructions = (frownmeninstruct1, meninstruct2)/ trials = [1=block_start; 2-134=noreplace(standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, standardmale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, targetfemale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a, distractormale1a); 135=block_end]</block>
<expt 1 of 2>/ blocks = [1=moodbaseline; 2=rejrecallstart; 3=rejrecall9; 4=moodpostcue1; 5=frownmen1a; 6=frownmen1b; 7=frownmen1c; 8=moodposttask1; 9=rejrecall9; 10=moodpostcue2; 11=frownwomen2a; 12=frownwomen2b; 13=frownwomen2c; 14=moodposttask2; 15=demographics; 16=end]/ preinstructions = (preintro)/ subjects = (1 of 2)</expt>
<defaults>/ font = ("Arial", -32, 700, 0, 34)/ screencolor = (128,128,128)/ txcolor = (0, 0, 0)/ pretrialpause = 250/ posttrialpause = 250/ endlock = true("Please let the experimenter know that you have finished the task.")</defaults>
[/quote]

> If a P does not make a response, then Inquisit waits for 2200 ms after the response was allowed (1000 ms) and terminates the trial.

No. that's not right. See https://www.millisecond.com/support/docs/v3/html/howto/howtocontroltiming.htm

/timeout=2200 is a different thing than /response = timeout(2200)