Millisecond Forums

You'll find detailed explanations of the script's data output in the comments inside the script (starting at line 269 and excerpted below):

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    DATA: this section contains data file information
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raw data
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date, time, subject, group:            date and time script was run with the current subject/groupnumber
blockcode, blocknum:                the name and number of the current block
trialcode, trialnum:                 the name and number of the currently recorded trial
                                        (Note: not all trials that are run might record data)
/digitpresentationtime:                the amount of time the digits are presented (default: 250ms)
/maskpresentationtime:                the amount of time the mask is presented (default: 900ms)

/trialtype:                            "Go" (digit !=3); "NoGo" (digit == 3)
/digit:                                contains the currently selected digit
/fontsize:                            contains the currently (randomly) selected fontsize
response:                            the participant's response
                                        SART trials: 0 for no response or 57 for Spacebar
                                        Probe trials (if run): the selected anchor digit
correct:                            the correctness of the response
RT:                                    the latency of the response (= trial latency unless no response was given; no response leaves values.RT empty)
latency:                             the trial latency in ms (if no response, trial latency shows the trialduration)
/latencytype:                        0 = no response given (suppression); 1 = anticipatory latency (< values.anticipatoryresponsetime);
                                    2 = ambiguous latency; 3 = valid latency  (>= values.validresponsetime)
                                    Note: independent of Go-NoGo trialtype
/responsetype:                        "NoGo Success": correctly suppressed response to NoGo trial (digit 3)
                                    "Omission": incorrectly suppressed response to a Go trial (digit other than 3)
                                    "NoGo Failure": any response to a NoGo trial
                                    "Go Anticipatory": anticipatory response for Go trials with latencies < values.anticipatoryresponsetime
                                    "Go Ambiguous": ambiguous response for Go trials
                                    "Go Success": valid response for Go trials with latencies >= values.validresponsetime
/count_anticipatory:                counts the number of times a Go-latency was faster than values.anticipatoryresponsetime
/correctsuppressions:                counts number of correct suppressions (-> no response to digit 3)
/incorrectsuppressions:                counts number of incorrect suppressions (-> no response to digit other than 3)
/count_NoGo:                        counts NoGo trials (digit 3)
/count_Go:                            counts Go trials (digits other than 3)
/count_validGo:                        counts Go trials with a correct response and latencies >= values.validresponsetime
/countprobes:                        counts the number of probes run

radiobuttons.difficulty.response:
radiobuttons.interest.response:            responses to the posttask survey questions

...

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summary data
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script.startdate:                date script was run
script.starttime:                time script was started
script.subjectid:                subject id number
script.groupid:                    group id number
script.elapsedtime:                time it took to run script (in ms)
/completed:                        0 = script was not completed (prematurely aborted); 1 = script was completed (all conditions run)

radiobuttons.difficulty.response:
radiobuttons.interest.response:            responses to the posttask survey questions

/percent_NoGosuccess:                    percentage of correct suppressions in NoGo trials (=NoGo success)
/percent_omissions:                        percentage of incorrect suppressions in Go trials (=omission of response)

Mean RTs are calculated for the correct consecutive (not interrupted either by a NoGo or by an omission trial) last four Go- trials (digit other than 3) preceding successful NoGo trial
Mean RTs are calculated for the correct consecutive (not interrupted either by a NoGo or by an omission trial) last four Go- trials (digit other than 3)  preceding preceding failed NoGo trial
!!!!Note: in this script any 4 correct Go trials are counted irrespective of values.latencytype

/meanRT_GObeforesuccessNOGO:                mean latency of consecutive 4 correct trials before correct suppression of response to digit 3
                                            (=> a measure of speed before successful NoGo trials)
/meanRT_GObeforefailedNOGO:                    mean latency of consecutive 4 correct trials before incorrect response of response to digit 3
                                            (=> a measure of speed before failed NoGo trials)

/meanRT_go:                                    mean latency of valid and correct Go trials (latencies >= values.validresponsetime)
/stdRT_go:                                    estimated standard deviation (STD) of valid and correct Go trials
/CV_go:                                        coefficient of variablity (CV = STD/Mean) => a measure of variability independent of mean differences