Implicit Attitude Test (IAT) - with pictures SCRIPT INFO Main Inquisit programming: Sean Draine (seandr@millisecond.com) last updated: 02-12-2018 by K.Borchert (katjab@millisecond.com) for Millisecond Software LLC Script Copyright © 02-12-2018 Millisecond Software BACKGROUND INFO The Implicit Association Task (Greenwald, McGhee, & Schwartz, 1998) is a widely-used cognitive-behavioral paradigm that measures the strength of automatic (implicit) associations between concepts in people’s minds relying on latency measures in a simple sorting task. The strength of an association between concepts is measured by the standardized mean difference score of the 'hypothesis-inconsistent' pairings and 'hypothesis-consistent' pairings (d-score) (Greenwald, Nosek, & Banaji, 2003). In general, the higher the d-score the stronger is the association between the 'hypothesis-consistent' pairings (decided by researchers). Negative d-scores suggest a stronger association between the 'hypothesis-inconsistent' pairings. Inquisit calculates d-scores using the improved scoring algorithm as described in Greenwald et al (2003). Error trials are handled by requiring respondents to correct their responses according to recommendation (p.214). D-scores obtained with this script: Positive d-scores: support a stronger association between 'Flowers-Good' and 'Insects-Bad' than for the opposite pairings Negative d-scores: support a stronger association between 'Insects-Good' and 'Flowers-Bad' than for the opposite pairings References: Greenwald, A. G., McGhee, D. E., & Schwartz, J. K. L. (1998). Measuring individual differences in implicit cognition: The Implicit Association Test. Journal of Personality and Social Psychology, 74, 1464-1480. Greenwald, A. G., Nosek, B. A., & Banaji, M. R. (2003). Understanding and Using the Implicit Association Test: I. An Improved Scoring Algorithm. Journal of Personality and Social Psychology, 85, 197-216. *Task* Participants are asked to categorize attributes (e.g. "joyful"; "tragic") and and target items (e.g "daisy" vs. "wasp") into predetermined categories via keystroke presses. The basic task is to press a left key (E) if an item (e.g. "joyful") belongs to the category presented on the left (e.g. "Good") and to press the right key (I) if the word (e.g. "tragic") belongs to the category ("Bad") presented on the right. For practice, participants sort items into the target categories "Flowers vs. Insects" and the attribute categories "Good vs. Bad". For the test, participants are asked to sort categories into the paired/combined categories (e.g. "Flower OR Good" on the left vs. "Insect OR Bad" on the right). Pairings are reversed for a second test (e.g. "Insects OR Good" on the left vs. "Flowers OR Bad" on the right). Block order is counterbalanced by groupnumber. DATA FILE INFORMATION: The default data stored in the data files are: (1) Raw data file: 'IAT_raw*.iqdat' (a separate file for each participant) build: Inquisit build computer.platform: the platform the script was run on date, time, subject, group: date and time script was run with the current subject/groupnumber Note: group1/group2 counterbalance the order in which the pairings are run 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; by default data is collected unless /recorddata = false is set for a particular trial/block) response: the final trial response (scancodes of the keys pressed) Note: script saves the final and -by design- correct response correct: the accuracy of the initial response 0 = initial response was incorrect and needed to be corrected 1 = initial response is correct latency: the latency of the final (correct) response in ms stimulusnumber: the number of the current stimulus stimulusitem: the currently presented item expressions.da: d-score of the first short blocks expressions.db: d-score of the second long blocks expressions.d: overall d-score(non-weighted mean of the 2 d-scores) / percentcorrect: the overall percent correct score of initial responses of test trials of D-score qualifying latencies (2) Summary data file: 'IAT_summary*.iqdat' (a separate file for each participant) 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) computer.platform: the platform the script was run on /completed: 0 = script was not completed (prematurely aborted); 1 = script was completed (all conditions run) expressions.da: d-score of the first blocks expressions.db: d-score of the second blocks expressions.d: overall d-score / percentcorrect: the overall percent correct score of initial responses of test trials of D-score qualifying latencies EXPERIMENTAL SET-UP Hypothesis-consistent pairings vs. hypothesis-inconsistent pairings; tested within-subjects => order is counterbalanced by groupnumber assignment Block Sequence: 1. Target Category sorting training 2. Attribute sorting training 3. 1. Test Block of hypothesis-consistent* pairings with 20 trials (half the participant start with inconsistent pairings) 4. 2. Test Block of hypothesis-consistent pairings with 40 trials 5. Target Category sorting training with targets switching sides 6. 1. Test Block of hypothesis-inconsistent pairings with 20 trials 7. 2. Test Block of hypothesis-inconsistent pairings with 40 trials In all Test Blocks: * attributes and targets alternate * attributes as well as targets are randomly selected without replacement Trial Sequence: Target -> until correct response -> ISI: 250ms (default)-> Target....STIMULI Stimuli can be edited under section Editable Stimuli INSTRUCTIONS * start instruction page is provided as an html page. It automatically adapts to different images and category labels UNLESS the number of attributes and/or targets have been changed. In this case, changes have to be made to file "intro_iat.htm", so that the correct number of items are presented in the overview table. Example: instead of 8 words for target A, only 5 should be presented: in file "intro_iat.htm": change: <%item.targetA.item(1)%>, <%item.targetA.item(2)%>, <%item.targetA.item(3)%>, <%item.targetA.item(4)%>, <%item.targetA.item(5)%>, <%item.targetA.item(6)%>, <%item.targetA.item(7)%>, <%item.targetA.item(8)%> To: <%item.targetA.item(1)%>, <%item.targetA.item(2)%>, <%item.targetA.item(3)%>, <%item.targetA.item(4)%>, <%item.targetA.item(5)%> * item.instructions under section 'Editable Instructions' contains the the trial instructions The instructions adapt automatically if different attributes and targets are used. EDITABLE CODE: check below for (relatively) easily editable parameters, stimuli, instructions etc. Keep in mind that you can use this script as a template and therefore always "mess" with the entire code to further customize your experiment. The parameters you can change are: /showsummaryfeedback: set parameter showsummaryfeedback = true to display summary feedback to participants at the end (default) set parameter showsummaryfeedback = false if no summary feedback should be presented to participants /ISI: interstimulus interval (in ms) (default: 250ms) ************************************************************************************************************** ************************************************************************************************************** EDITABLE PARAMETERS: change editable parameters here ************************************************************************************************************** ************************************************************************************************************** /showsummaryfeedback = true /ISI = 250 ************************************************************************************************************** ************************************************************************************************************** EDITABLE STIMULI: change editable stimuli here ************************************************************************************************************** ************************************************************************************************************** This sample IAT can be easily adapted to different target categories and attributes. To change the categories, you need only change the stimulus items and labels immediately below this line. *********************************************************************** /1 = "Слова" /1 = "кошмар" /2 = "чужой" /3 = "красивый" /4 = "мой" /5 = "далеко" /6 = "классный" /7 = "плохой" /8 = "любовь" /1 = "Słowa" /1 = "ładny" /2 = "mój" /3 = "obcy" /4 = "bliski" /5 = "zimny" /6 = "złe" /7 = "kochany" /8 = "brzydki" /1 = "Картинки" /1 = "Lenin.jpg" /2 = "tretiak.jpeg" /3 = "balet.jpg" /4 = "kreml.jpg" /5 = "kolej.jpg" /6 = "bajka.jpg" /7 = "dzien zwyciestwa.jpeg" /8 = "mgu.jpg" /1 = "Obrazki" /1 = "syrenka.jpg" /2 = "stocznia.jpg" /3 = "zubr.jpg" /4 = "wawel.jpg" /5 = "lewandowski.jpeg" /6 = "jezus.jpg" /7 = "piłsudski.jpg" /8 = "stare miasto waw.jpg" ************************************************************************************************************** ************************************************************************************************************** EDITABLE INSTRUCTIONS: change instructions here ************************************************************************************************************** ************************************************************************************************************** / 1Pyt = 0 /caption "Posługuje się w obu językach na codzień:" /questions = [1=1Pyt] / showmousecursor = true / ontrialbegin = [values.1Pyt = textbox.1Pyt.response] /response = noresponse / file = "instrukcja_poczatek.htm" / 1 = "Przyłóż lewy palec na klawiszu odpowiedzi 'E' dla elementów należących do kategorii '<%expressions.leftTarget%>'. Połóż prawy palec na klawiszu odpowiedzi 'I' dla elementów należących do kategorii '<%expressions.rightTarget%>'. ~nPrzedmioty będą pojawiać się jeden po drugim na środku ekranu. ~nJeśli popełnisz błąd pojawi się czerwony znak X - aby kontynuować naciśnij drugi klawisz odpowiedzi. ~nWybieraj odpowiedzi tak szybko jak to możliwe, jednocześnie popełniając jak najmnije błędów." / 2 = "Przyłóż lewy palec na klawiszu odpowiedzi 'E' dla elementów należących do kategorii '<%item.attributeAlabel.item(1)%>'. Połóż prawy palec na klawiszu odpowiedzi 'I' dla elementów należących do kategorii '<%item.attributeBlabel.item(1)%>'. ~nJeśli popełnisz błąd pojawi się czerwony znak X - aby kontynuować naciśnij drugi klawisz odpowiedzi. ~nWybieraj odpowiedzi tak szybko jak to możliwe, jednocześnie popełniając jak najmnije błędów." / 3 = "Naciśnij lewy klawisz 'E' dla '<%item.attributeAlabel.item(1)%>' and '<%expressions.leftTarget%>'. Nacisnij prawy klawisz 'I' dla '<%item.attributeBlabel.item(1)%>' and '<%expressions.rightTarget%>'. ~nKażdy element należy do tylko jednej kategorii. ~nJeśli popełnisz błąd pojawi się czerwony znak X - aby kontynuować naciśnij drugi klawisz odpowiedzi. ~nWybieraj odpowiedzi tak szybko jak to możliwe, jednocześnie popełniając jak najmnije błędów." / 4 = "To jest to samo zadanie co poprzednio. ~n~nNaciśnij lewy klawisz 'E' dla '<%item.attributeAlabel.item(1)%>' and '<%expressions.leftTarget%>'. Naciśnij prawy klawisz 'I' dla '<%item.attributeBlabel.item(1)%>' and '<%expressions.rightTarget%>'. ~nKażdy element należy do tylko jednej kategorii. ~nWybieraj odpowiedzi tak szybko jak to możliwe, jednocześnie popełniając jak najmnije błędów." / 5 = "Uwaga! Etykiety zamieniono stronami. ~nNaciśnij lewy klawisz 'E' dla '<%expressions.rightTarget%>'. Naciśnij prawy klawisz 'I' dla '<%expressions.leftTarget%>'. ~nWybieraj odpowiedzi tak szybko jak to możliwe, jednocześnie popełniając jak najmnije błędów." / 6 = "Naciśnij lewy klawisz 'E' dla '<%item.attributeAlabel.item(1)%>' and '<%expressions.rightTarget%>'. Naciśnij prawy klawisz 'I' dla '<%item.attributeBlabel.item(1)%>' and '<%expressions.leftTarget%>'. ~nJeśli popełnisz błąd pojawi się czerwony znak X - aby kontynuować naciśnij drugi klawisz odpowiedzi. ~nZwróć uwagę na, że powstały pary łączone. ~nWybieraj odpowiedzi tak szybko jak to możliwe, jednocześnie popełniając jak najmnije błędów." / 7 = "To jest to samo zadanie co poprzednio. ~nNaciśnij lewy klawisz 'E' dla '<%item.attributeAlabel.item(1)%>' and '<%expressions.rightTarget%>'. Naciśnij prawy klawisz 'I' dla '<%item.attributeBlabel.item(1)%>' and '<%expressions.leftTarget%>' ~nKażdy element należy do tylko jednej kategorii. ~nWybieraj odpowiedzi tak szybko jak to możliwe, jednocześnie popełniając jak najmnije błędów." Note: expressions used to assign the correct label to the left and right response keys /leftTarget = if(mod(script.groupid, 2) != 0){ item.targetAlabel.item(1); } else { item.targetBlabel.item(1); }; /rightTarget = if (mod(script.groupid, 2) != 0){ item.targetBlabel.item(1); } else { item.targetAlabel.item(1); }; / items = ("Naciśnij klawisz spacji, aby rozpocząć.") / position = (60%, 90%) / valign = bottom / items = (" Jeśli popełnisz błąd pojawi się czerwony znak X; aby kontynuować naciśnij drugi klawisz odpowiedzi.") / position = (50%, 95%) / valign = bottom / fontstyle = ("Arial", 3%, false, false, false, false, 5, 1) / txcolor = white / erase = false *********************************************************************** Performance summary *********************************************************************** / stimulustimes = [0=summary] / validresponse = (" ") / recorddata = false / ontrialbegin = [values.magnitude = "little to no"] / ontrialbegin = [if( abs(expressions.d) > 0.15 ) values.magnitude = "a slight"] / ontrialbegin = [if( abs(expressions.d) > 0.35 ) values.magnitude = "a moderate"] / ontrialbegin = [if( abs(expressions.d) >= 0.65 ) values.magnitude = "a strong"] / ontrialbegin = [if (expressions.d >= 0.0) values.preferred = item.targetALabel.1] / ontrialbegin = [if (expressions.d < 0.0) values.preferred = item.targetBLabel.1] / ontrialbegin = [if (expressions.d < 0.0) values.notpreferred= item.targetALabel.1] / ontrialbegin = [if (expressions.d >= 0.0) values.notpreferred= item.targetBLabel.1] / items = ("Dziękuję za badanie") / size = (60%, 60%) / hjustify = left ************************************************************************************************************** !!!REMAINING CODE: Customize after careful consideration only!!! ************************************************************************************************************** ************************************************************************************************************** ************************************************************************************************************** DEFAULTS ************************************************************************************************************** ************************************************************************************************************** script requires Inquisit 5.0.7.0 or higher / fontstyle = ("Arial", 3.5%) / screencolor = black / txbgcolor = black / txcolor = white / minimumversion = "5.0.7.0" / canvasaspectratio = (4, 3) ************************************************************************************************************** ************************************************************************************************************** DATA ************************************************************************************************************** ************************************************************************************************************** Note: data file explanations under User Manual Information at the top *********************** raw data file *********************** / columns = (build, computer.platform, date, time, group, subject, blockcode, blocknum, trialcode, trialnum, response, correct, latency, stimulusnumber, stimulusitem, expressions.da, expressions.db, expressions.d, expressions.percentcorrect) / separatefiles = true **************** summary data **************** / columns = (script.startdate, script.starttime, script.subjectid, script.groupid, script.elapsedtime, computer.platform, values.completed, expressions.da, expressions.db, expressions.d, expressions.percentcorrect) / separatefiles = true ************************************************************************************************************** ************************************************************************************************************** VALUES: automatically updated ************************************************************************************************************** ************************************************************************************************************** /completed: 0 = script was not completed; 1 = script was completed (all conditions run) / sum1a: tracks the sum of the latencies to correct responses (latencies <= 10000ms) for the first compatible block 1A Note: by design, all final trial responses are correct (regardless of accuracy of initial response) / sum2a: tracks the sum of the latencies to correct responses (latencies <= 10000ms) for the first incompatible block 2A Note: by design, all final trial responses are correct (regardless of accuracy of initial response) / sum1b: tracks the sum of the latencies to correct responses (latencies <= 10000ms) for the second compatible block 1B Note: by design, all final trial responses are correct (regardless of accuracy of initial response) / sum2b: tracks the sum of the latencies to correct responses (latencies <= 10000ms) for the second incompatible block 2B Note: by design, all final trial responses are correct (regardless of accuracy of initial response) / n1a: counts the number of trials in first compatible block 1A (except first one) / n2a: counts the number of trials in first incompatible block 2A (except first one) / n1b: counts the number of trials in second compatible block 1B / n2b: counts the number of trials in second incompatible block 2B / ss1a: tracks the sum of the squared latencies to correct responses (latencies <= 10000ms) in the first compatible block / ss2a tracks the sum of the squared latencies to correct responses (latencies <= 10000ms) in the first incompatible block / ss1b: tracks the sum of the squared latencies to correct responses (latencies <= 10000ms) in the second compatible block / ss2b: tracks the sum of the squared latencies to correct responses (latencies <= 10000ms) in the second incompatible block / magnitude: stores the magnitude of the implicit preference: "little to no", "a slight", "a moderate", "a strong" / preferred: stores the preferred target category / notpreferred : stores the non preferred target category / n_correct: counts all initial correct responses of all trials that count towards D score / completed = 0 / sum1a = 0 / sum2a = 0 / sum1b = 0 / sum2b = 0 / n1a = 0 / n2a = 0 / n1b = 0 / n2b = 0 / ss1a = 0 / ss2a = 0 / ss1b = 0 / ss2b = 0 / magnitude = "unknown" / preferred = "unknown" / notpreferred = "unknown" / n_correct = 0 /progresswidth = 0 /instructionIndex = 0 ************************************************************************************************************** ************************************************************************************************************** EXPRESSIONS ************************************************************************************************************** ************************************************************************************************************** * 1 is compatible, 2 is incompatible * a is first block, b is second block / m1a: mean latencies of correct responses in first compatible block / m2a: mean latencies of correct responses in first incompatible block / m1b: mean latencies of correct responses in second compatible block / m2b: mean latencies of correct responses in second incompatible block / sd1a: standard deviation of latencies of correct responses in first compatible block / sd2a standard deviation of latencies of correct responses in first incompatible block / sd1b: standard deviation of latencies of correct responses in second compatible block / sd2b: standard deviation of latencies of correct responses in second incompatible block / sda standarddeviation of latencies in first block / sdb standarddeviation of latencies in second block / da: D-score for first blocks / db: D-score for second blocks / d: overall D-score / percentcorrect: calculates the overall percent correct score of initial responses of test trials of D-score qualifying latencies /progress: sets the length of the progress bar to % / m1a = values.sum1a / values.n1a / m2a = values.sum2a / values.n2a / m1b = values.sum1b / values.n1b / m2b = values.sum2b / values.n2b / sd1a = sqrt((values.ss1a - (values.n1a * (expressions.m1a * expressions.m1a))) / (values.n1a - 1)) / sd2a = sqrt((values.ss2a - (values.n2a * (expressions.m2a * expressions.m2a))) / (values.n2a - 1)) / sd1b = sqrt((values.ss1b - (values.n1b * (expressions.m1b * expressions.m1b))) / (values.n1b - 1)) / sd2b = sqrt((values.ss2b - (values.n2b * (expressions.m2b * expressions.m2b))) / (values.n2b - 1)) / sda = sqrt((((values.n1a - 1) * (expressions.sd1a * expressions.sd1a) + (values.n2a - 1) * (expressions.sd2a * expressions.sd2a)) + ((values.n1a + values.n2a) * ((expressions.m1a - expressions.m2a) * (expressions.m1a - expressions.m2a)) / 4) ) / (values.n1a + values.n2a - 1) ) / sdb = sqrt((((values.n1b - 1) * (expressions.sd1b * expressions.sd1b) + (values.n2b - 1) * (expressions.sd2b * expressions.sd2b)) + ((values.n1b + values.n2b) * ((expressions.m1b - expressions.m2b) * (expressions.m1b - expressions.m2b)) / 4) ) / (values.n1b + values.n2b - 1) ) / da = (m2a - m1a) / expressions.sda / db = (m2b - m1b) / expressions.sdb / d = (expressions.da + expressions.db) / 2 / percentcorrect = (values.n_correct/ (values.n1a + values.n1b + values.n2a + values.n2b)) * 100 /progress = 1% * values.progresswidth ************************************************************************************************************** ************************************************************************************************************** INSTRUCTIONS ************************************************************************************************************** ************************************************************************************************************** / screencolor = black / items = instructions / position = (10%, 25%) / halign = left / valign = top / hjustify = left / vjustify = center / size = (80%, 50%) / select = values.instructionIndex / ontrialbegin = [ values.progresswidth += 10; values.instructionIndex += 1; ] / stimulustimes = [1=instructions, spacebar, progressbar, progressbar_fill] / correctresponse = (" ") / errormessage = false / recorddata = false / showmousecursor = true ************************************************************************************************************** ************************************************************************************************************** STIMULI ************************************************************************************************************** ************************************************************************************************************** /shape = rectangle / size = (70%, 2%) / color = gray / position = (15%, 95%) / halign = left / valign = top /shape = rectangle / size = (expressions.progress, 2%) / color = green / position = (15%, 95%) / halign = left / valign = top / items = attributeA / fontstyle = ("Arial", 5%) / txcolor = green / items = attributeB / fontstyle = ("Arial", 5%) / txcolor = green / items = targetB / size = (55%, 55%) / items = targetA / size = (55%, 55%) / position = (50%, 75%) / items = ("X") / color = red / fontstyle = ("Arial", 10%, true) / items = attributeAlabel / valign = top / halign = left / position = (5%, 5%) / txcolor = green / fontstyle = ("Arial", 5%) / items = attributeBlabel / valign = top / halign = right / position = (95%, 5%) / txcolor = green / fontstyle = ("Arial", 5%) / items = targetBlabel / valign = top / halign = left / position = (5%, 5%) / fontstyle = ("Arial", 5%) / items = targetBlabel / valign = top / halign = right / position = (95%, 5%) / fontstyle = ("Arial", 5%) / items = targetBlabel / valign = top / halign = left / position = (5%, 19%) / fontstyle = ("Arial", 5%) / items = targetBlabel / valign = top / halign = right / position = (95%, 19%) / fontstyle = ("Arial", 5%) / items = targetAlabel / valign = top / halign = left / position = (5%, 5%) / fontstyle = ("Arial", 5%) / items = targetAlabel / valign = top / halign = right / position = (95%, 5%) / fontstyle = ("Arial", 5%) / items = targetAlabel / valign = top / halign = left / position = (5%, 19%) / fontstyle = ("Arial", 5%) / items = targetAlabel / valign = top / halign = right / position = (95%, 19%) / fontstyle = ("Arial", 5%) / items = ("or") / valign = top / halign = left / position = (5%, 12%) / fontstyle = ("Arial", 5%) / items = ("or") / valign = top / halign = right / position = (95%, 12%) / fontstyle = ("Arial", 5%) ************************************************************************************************************** ************************************************************************************************************** TRIALS ************************************************************************************************************** ************************************************************************************************************** / validresponse = ("E", "I") / correctresponse = ("E") / stimulusframes = [1 = attributeA, errorReminder] / posttrialpause = parameters.ISI / validresponse = ("E", "I") / correctresponse = ("I") / stimulusframes = [1 = attributeB, errorReminder] / posttrialpause = parameters.ISI / validresponse = ("E", "I") / correctresponse = ("E") / stimulusframes = [1 = targetB, errorReminder] / posttrialpause = parameters.ISI / validresponse = ("E", "I") / correctresponse = ("I") / stimulusframes = [1 = targetB, errorReminder] / posttrialpause = parameters.ISI / validresponse = ("E", "I") / correctresponse = ("E") / stimulusframes = [1 = targetA, errorReminder] / posttrialpause = parameters.ISI / validresponse = ("E", "I") / correctresponse = ("I") / stimulusframes = [1 = targetA, errorReminder] / posttrialpause = parameters.ISI ************************************************************************************************************** ************************************************************************************************************** BLOCKS ************************************************************************************************************** ************************************************************************************************************** / bgstim = (attributeAleft, attributeBright) / trials = [ 1=instructions; 2-21 = random(attributeA, attributeB); ] / errormessage = true(error,200) / responsemode = correct / bgstim = (targetAleft, targetBright) / trials = [ 1=instructions; 2-21 = random(targetAleft, targetBright); ] / errormessage = true(error,200) / responsemode = correct / bgstim = (targetAright, targetBleft) / trials = [ 1=instructions; 2-21 = random(targetAright, targetBleft); ] / errormessage = true(error,200) / responsemode = correct / bgstim = (targetAleft, targetBright) / trials = [ 1=instructions; 2-41 = random(targetAleft, targetBright); ] / errormessage = true(error,200) / responsemode = correct / bgstim = (targetAright, targetBleft) / trials = [ 1=instructions; 2-41 = random(targetAright, targetBleft); ] / errormessage = true(error,200) / responsemode = correct / bgstim = (targetAleftmixed, orleft, attributeAleft, targetBrightmixed, orright, attributeBright) / trials = [1=instructions; 3,5,7,9,11,13,15,17,19,21= random(targetAleft, targetBright); 2,4,6,8,10,12,14,16,18,20 = random(attributeA, attributeB)] / errormessage = true(error,200) / responsemode = correct / ontrialend = [ if(block.compatibletest1.latency <= 10000 && block.compatibletest1.currenttrialnumber != 1 ) values.sum1a = values.sum1a + block.compatibletest1.latency; if(block.compatibletest1.latency <= 10000 && block.compatibletest1.currenttrialnumber != 1 ) values.n1a += 1; if(block.compatibletest1.latency <= 10000 && block.compatibletest1.currenttrialnumber != 1 ) values.ss1a = values.ss1a + (block.compatibletest1.latency * block.compatibletest1.latency); if(block.compatibletest1.latency <= 10000 && block.compatibletest1.currenttrialnumber != 1 ) values.n_correct += block.compatibletest1.correct; ] / bgstim = (targetAleftmixed, orleft, attributeAleft, targetBrightmixed, orright, attributeBright) / trials = [ 2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40 = random(targetAleft, targetBright); 1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37,39 = random(attributeA, attributeB)] / errormessage = true(error,200) / responsemode = correct / ontrialend = [ if(block.compatibletest2.latency <= 10000) values.sum1b = values.sum1b + block.compatibletest2.latency; if(block.compatibletest2.latency <= 10000) values.n1b += 1; if(block.compatibletest2.latency <= 10000) values.ss1b = values.ss1b + (block.compatibletest2.latency * block.compatibletest2.latency); if(block.compatibletest2.latency <= 10000) values.n_correct += block.compatibletest2.correct; ] / bgstim = (targetBleftmixed, orleft, attributeAleft, targetArightmixed, orright, attributeBright) / trials = [1=instructions; 3,5,7,9,11,13,15,17,19,21 = random(targetBleft, targetAright); 2,4,6,8,10,12,14,16,18,20 = random(attributeA, attributeB)] / errormessage = true(error,200) / responsemode = correct / ontrialend = [ if(block.incompatibletest1.latency <= 10000 && block.incompatibletest1.currenttrialnumber != 1) values.sum2a = values.sum2a + block.incompatibletest1.latency; if(block.incompatibletest1.latency <= 10000 && block.incompatibletest1.currenttrialnumber != 1 ) values.n2a += 1; if(block.incompatibletest1.latency <= 10000 && block.incompatibletest1.currenttrialnumber != 1 ) values.ss2a = values.ss2a + (block.incompatibletest1.latency * block.incompatibletest1.latency); if(block.incompatibletest1.latency <= 10000 && block.incompatibletest1.currenttrialnumber != 1 ) values.n_correct += block.incompatibletest1.correct; ] / bgstim = (targetBleftmixed, orleft, attributeAleft, targetArightmixed, orright, attributeBright) / trials = [ 2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40 = random(targetBleft, targetAright); 1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37,39 = random(attributeA, attributeB)] / errormessage = true(error,200) / responsemode = correct / ontrialend = [ if(block.incompatibletest2.latency <= 10000) values.sum2b = values.sum2b + block.incompatibletest2.latency; if(block.incompatibletest2.latency <= 10000) values.n2b += 1; if(block.incompatibletest2.latency <= 10000) values.ss2b = values.ss2b + (block.incompatibletest2.latency * block.incompatibletest2.latency); if(block.incompatibletest2.latency <= 10000) values.n_correct += block.incompatibletest2.correct; ] / bgstim = (targetAleftmixed, orleft, attributeAleft, targetBrightmixed, orright, attributeBright) / trials = [1=instructions] / recorddata = false / bgstim = (targetBleftmixed, orleft, attributeAleft, targetArightmixed, orright, attributeBright) / trials = [1=instructions] / recorddata = false /skip = [parameters.showsummaryfeedback == false] / trials = [1=summary] / recorddata = false ************************************************************************************************************** ************************************************************************************************************** EXPERIMENT ************************************************************************************************************** ************************************************************************************************************** Groupassignment is done by groupnumber / preinstructions = (iatintro) /subjects = (1 of 2) /groupassignment = groupnumber / blocks = [ 1=targetcompatiblepractice; 2=attributepractice; 3=compatibletest1; 4=compatibletestinstructions; 5=compatibletest2; 6=targetincompatiblepractice; 7=incompatibletest1; 8=incompatibletestinstructions; 9=incompatibletest2; 10=summary; ] /onexptend = [values.completed = 1] / preinstructions = (iatintro) /subjects = (2 of 2) /groupassignment = groupnumber / blocks = [ 1=targetincompatiblepractice; 2=attributepractice; 3=incompatibletest1; 4=incompatibletestinstructions; 5=incompatibletest2; 6=targetcompatiblepractice; 7=compatibletest1; 8=compatibletestinstructions; 9=compatibletest2; 10=summary; ] /onexptend = [values.completed = 1] *********************************************************************** Test Monkey *********************************************************************** / latencydistribution = normal(500, 100) / percentcorrect = 90 ************************************************************************************************************** End of File **************************************************************************************************************