selectionmode in the trial element

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selectionmode in the trial element

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vz29

posted 11 Years Ago

Group: Awaiting Activation
Posts: 72, Visits: 192

Hi,

I want to present stimuli randomly selected from two lists. However, when I run the following syntax, I receive an error message saying "could not locate element 'selectionmode'".

/ ontrialbegin = [values.itemnumber=list.itemlist.nextvalue]

/ stimulustimes = [0=selectionmode(f_image, m_image), q1text_like, leftyes_reminder, rightno_reminder, leftA_reminder, rightL_reminder]

/ inputdevice = keyboard

/ validresponse = ("A" "L")

</trial>

I thought that this was the correct syntax based on the information available in the Inquisit help documentation:

stimulustimes attribute

The stimulustimes attribute specifies the stimulus presentation sequence for a trial in terms of time in milliseconds.

Applies to

Syntax

/ stimulustimes = [time = stimulusname, stimulusname, ...; time = stimulusname, ...]

/ stimulustimes = [time = list.name]

/ stimulustimes = [time = selectionmode(stimulusname, stimulusname, stimulusname, ...)]

Dave

posted 11 Years Ago

Group: Administrators
Posts: 13K, Visits: 108K

As the documentation details,

Syntax

/ stimulustimes = [time = stimulusname, stimulusname, ...; time = stimulusname, ...]

/ stimulustimes = [time = list.name]

/ stimulustimes = [time = selectionmode(stimulusname, stimulusname, stimulusname, ...)]

Parameters

time

A non-negative integer specifying the time in milliseconds relative to the beginning of the sequence.

stimulusname

The name of a stimulus defined elsewhere in the script to be presented on the specified frame.

list.name

The name of a list that selects the stimulus to be presented on the specified frame.

selectionmode

One of the following values:

Value	Description
noreplace	Randomly selects without replacement which stimulus in the group to present.
replace	Randomly selects with replacement which stimulus in the group to present.
sequence	Presents each stimulus in the group.

i.e., you need to *specify an actual seletionmode* as

/stimulustimes = [100=noreplace(a,b); ...]

Also, you cannot specify several selection modes for the same point in time, which is what your syntaxt amounts to:

/stimulustimes = [0=selectionmode(f_image, m_image), q1text_like, leftyes_reminder, rightno_reminder, leftA_reminder, rightL_reminder]

would actually translate to

/stimulustimes = [0=noreplace(f_image, m_image), sequence(q1text_like, leftyes_reminder, rightno_reminder, leftA_reminder, rightL_reminder)]

which is not allowed.

vz29

posted 11 Years Ago

Group: Awaiting Activation
Posts: 72, Visits: 192

Lovely.

Is there another option then.

Dave

posted 11 Years Ago

Group: Administrators
Posts: 13K, Visits: 108K

Display them at slightly different times:

/stimulusframes = [1=a,b,c,d; 2=noreplace(e,f)]

BTW, I would strongly discourage using selectionmodes in /stimulustimes or /stimulusframes. 99,9% it won't give you what you actually want and there are better ways to go about things.

Edited 11 Years Ago by Dave

vz29

posted 11 Years Ago

Group: Awaiting Activation
Posts: 72, Visits: 192

Do you have any recommendation for a better way -- preferably at a lower level (item vs. block) in the code?

Dave

posted 11 Years Ago

Group: Administrators
Posts: 13K, Visits: 108K

Depends on what exactly you want to do -- that's not possible to glean from the single code snippet you posted. Can you give a short, self-contained, runnable example?

vz29

posted 11 Years Ago

Group: Awaiting Activation
Posts: 72, Visits: 192

Hi,

The goal of the experiment is:

(1) to present image X and obtain three different judgments about this image in sequence. Repeat so that the three judgments are made once for each image in the sets.

(2) select images randomly (with no replacement) from two sets (f_stim and m_stim).

Below is a script that achieves aim 1 for the f_stim set, but I'd like it to randomly select from both f_stim and m_stim.

**************

/ fontstyle = ("Gill Sans", 2.78%, false, false, false, false, 5, 0)

/ txcolor = (0, 0, 0)

/ screencolor = (255,255,255)

/ txcolor = (0, 0, 0)

/ pretrialpause = 000

/ posttrialpause = 000

/ endlock = true("Please tell the experimenter that you are finished with this portion of the experiment.")

/ inputdevice = keyboard

</defaults>

<data>

/ format = tab

/ columns = [date time build subject blocknum blockcode trialnum trialcode response correct latency stimulusitem stimulusitem stimulusitem]

/ labels = true

</data>

------------------------------------------------------------------------------------

*** EXPT CONDITIONS ****

------------------------------------------------------------------------------------

/ preinstructions = (intro0, rate)

/ blocks = [1-4 = rate; 5 = demo]

/ subjects = (1 of 1)

/ postinstructions = (end)

</expt>

------------------------------------------------------------------------------------

*** RATE ****

------------------------------------------------------------------------------------

*** BLOCK ****

------------------------------------------------------------------------------------

/ preinstructions = (rate)

/ trials =[1-50=sequence(q1_like, q2_self, q3_gender)]

</block>

------------------------------------------------------------------------------------

*** TRIALS ****

------------------------------------------------------------------------------------

/ ontrialbegin = [values.itemnumber=list.itemlist.nextvalue]

/ stimulustimes = [0=f_stim, q1text_like, leftyes_reminder, rightno_reminder, leftA_reminder, rightL_reminder]

/ inputdevice = keyboard

/ validresponse = ("A" "L")

/ trialdata = [f_stim]

</trial>

/ items = ("Do you like this stimuli?")

/ position = (50%,15%)

/ fontstyle = ("Gill Sans", 6.11%, false, false, false, false, 5, 0)

/ txcolor = (75, 0, 130)

</text>

/ stimulustimes = [0=f_stim, q2text_self, leftyes_reminder, rightno_reminder, leftA_reminder, rightL_reminder]

/ inputdevice = keyboard

/ validresponse = ("A" "L")

/ trialdata = [f_stim]

</trial>

/ items = ("Is this stimuli personally relevant to you?")

/ position = (50%,15%)

/ fontstyle = ("Gill Sans", 6.11%, false, false, false, false, 5, 0)

/ txcolor = (0, 128, 64)

</text>

/ stimulustimes = [0=f_stim, q3text_gender, leftmale_reminder, rightfemale_reminder, leftA_reminder, rightL_reminder,

leftboth_reminder, rightneither_reminder, leftF_reminder, rightH_reminder]

/ inputdevice = keyboard

/ validresponse = ("A" "F" "H" "L")

/ trialdata = [f_stim]

</trial>

/ items = ("Is this stimuli relevant to men, women, both, or neither?")

/ position = (50%,15%)

/ fontstyle = ("Gill Sans", 6.11%, false, false, false, false, 5, 0)

/ txcolor = (128, 64, 0)

</text>

/ items = ("If 'YES',")

/ position = (20%, 85%)

/ fontstyle = ("Gill Sans", 4.00%, false, false, false, false, 5, 0)

/ txcolor = (0, 0, 0)

</text>

/ items = ("press the 'A' key")

/ position = (20%, 90%)

/ fontstyle = ("Gill Sans", 4.00%, false, false, false, false, 5, 0)

/ txcolor = (0, 0, 0)

</text>

/ items = ("If 'NO',")

/ position = (80%, 85%)

/ fontstyle = ("Gill Sans", 4.00%, false, false, false, false, 5, 0)

/ txcolor = (0, 0, 0)

</text>

/ items = ("press the 'L' key")

/ position = (80%, 90%)

/ fontstyle = ("Gill Sans", 4.00%, false, false, false, false, 5, 0)

/ txcolor = (0, 0, 0)

</text>

/ items = ("If 'MEN',")

/ position = (20%, 85%)

/ fontstyle = ("Gill Sans", 4.00%, false, false, false, false, 5, 0)

/ txcolor = (0, 0, 0)

</text>

/ items = ("If 'BOTH',")

/ position = (40%, 85%)

/ fontstyle = ("Gill Sans", 4.00%, false, false, false, false, 5, 0)

/ txcolor = (0, 0, 0)

</text>

/ items = ("press the 'F' key")

/ position = (40%, 90%)

/ fontstyle = ("Gill Sans", 4.00%, false, false, false, false, 5, 0)

/ txcolor = (0, 0, 0)

</text>

/ items = ("If 'WOMEN',")

/ position = (80%, 85%)

/ fontstyle = ("Gill Sans", 4.00%, false, false, false, false, 5, 0)

/ txcolor = (0, 0, 0)

</text>

/ items = ("If 'NEITHER',")

/ position = (60%, 85%)

/ fontstyle = ("Gill Sans", 4.00%, false, false, false, false, 5, 0)

/ txcolor = (0, 0, 0)

</text>

/ items = ("press the 'H' key")

/ position = (60%, 90%)

/ fontstyle = ("Gill Sans", 4.00%, false, false, false, false, 5, 0)

/ txcolor = (0, 0, 0)

</text>

------------------------------------------------------------------------------------

*** ITEMS ****

------------------------------------------------------------------------------------

/ itemnumber = 1

</values>

/ resetinterval = 0

/ items = (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,

21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,

41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60,

61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80,

81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100,

101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120,

121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140,

141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160,

161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180,

181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200)

/ selectionmode = random

</list>

/ select = values.itemnumber

/ items = f_pics

/ size = (50%, 50%)

/ position = (50, 50)

</picture>

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</item>

/ select = values.itemnumber

/ select = noreplace

/ items = m_pics

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/ position = (50, 50)

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</item>

------------------------------------------------------------------------------------

*** DEMO ****

------------------------------------------------------------------------------------

*** BLOCK ****

------------------------------------------------------------------------------------

/ pages = [1 = demographics1; 2= demographics2]

/ responsefontstyle = ("Verdana", -12, false, false, false, false, 5, 0)

/ itemfontstyle = ("Verdana", -13, false, false, false, false, 5, 0)

/ itemspacing = 10%

/ showpagenumbers = false

/ finishlabel = "Next"

</survey>

------------------------------------------------------------------------------------

*** PAGES ****

------------------------------------------------------------------------------------

/ caption = "Please answer the following demographic questions"

/ fontstyle = ("Verdana", -16, true, false, false, false, 5, 0)

/ questions = [1=age; 2=sex]

</surveypage>

/ caption = "Please answer the following demographic questions (continued)"

/ fontstyle = ("Verdana", -16, true, false, false, false, 5, 0)

/ questions = [1=educ; 2=race; 3=occupation; 4 =income]

</surveypage>

/ caption = "What is your age?"

/ options = ("18", "19", "20", "21", "22", "23", "24", "25", "26", "27","28", "29",

"30", "31", "32", "33", "34", "35", "36", "37","38", "39",

"40", "41", "42", "43", "44", "45", "46", "47","48", "49",

"50", "51", "52", "53", "54", "55", "56", "57","58", "59",

"60", "61", "62", "63", "64", "65", "66", "67","68", "69",

"70", "71", "72", "73", "74", "75", "76", "77","78", "79",

"80", "81", "82", "83", "84", "85", "86", "87","88", "89")

/ optionvalues = ("18", "19", "20", "21", "22", "23", "24", "25", "26", "27","28", "29",

"30", "31", "32", "33", "34", "35", "36", "37","38", "39",

"40", "41", "42", "43", "44", "45", "46", "47","48", "49",

"50", "51", "52", "53", "54", "55", "56", "57","58", "59",

"60", "61", "62", "63", "64", "65", "66", "67","68", "69",

"70", "71", "72", "73", "74", "75", "76", "77","78", "79",

"80", "81", "82", "83", "84", "85", "86", "87","88", "89")

</dropdown>

/ caption = "What is your sex?"

/ options = ("female", "male")

/ optionvalues = ("0", "1")

</dropdown>

/ caption = "What is the highest level of education that you have completed?"

/ options = ("Some highschool", "Highschool", "Some college",

"2-year college degree", "4-year college degree", "Masters",

"Professional degree (JD, MD)", "Doctorate")

/ optionvalues = ("1", "2", "3", "4", "5", "6", "7", "8")

</dropdown>

/ caption = "With what race/ethnicity do you identify? (Select ALL that apply)"

/ options = ("White", "Hispanic or Latino", "Asian", "Black/African American", "Native Hawaiian/Pacific Islander", "American Indian/Alaska Native")

/ other = "Other"

</checkboxes>

/ caption = "What is your occupation?"

</textbox>

/ caption = "What is your HOUSEHOLD income (approximately)?"

/ options = ("<10,000", "10-001-20,000", "20,001-30,000", "30,001-40,000", "40,001-50,000", "50,001-60,000",

"60,001-70,000", "70,001-80,000", "80,001-90,000", "90,001-100,000","100,001-110,000", "110,001-120,000",

"120,001-130,000", "130,001-140,000", "140,001-150,000", "150,000-200,000", ">$200,001")

/ optionvalues = ("0," "1", "2", "3", "4", "5", "6", "7","8", "9", "10", "11", "12", "13", "14", "15", "16")

</dropdown>

------------------------------------------------------------------------------------

*** INSTRUCTIONS ****

------------------------------------------------------------------------------------

Welcome!

^^In this study, we will present you with images and ask you about your feelings and attitudes towards each.

^^We will then ask you a few questions about yourself (e.g., your age, your gender).

^^The entire study will take about 45 minutes.

</page>

We will now show you the images -- one at a time.

^^You will be asked questions about your feelings and thoughts for each image presented.

^^There are no right and wrong answers. So, just answer truthfully. Go with your gut reaction.

</page>

We will now ask you a few questions to learn more about you (e.g., your age, gender, etc.).

^^Please answer truthfully.

</page>

Thank you for taking part in our study!

</page>

Dave

posted 11 Years Ago

Group: Administrators
Posts: 13K, Visits: 108K

You have several options, here's two:

#1: You may not need two sets of stimuli. Why not have one <picture stim> element with all 400+ items (male and female) and then sample from the full item set?

#2: Otherwise you can set up separate <trial> elements for the two sets (f and m), i.e.

/ stimulustimes = [0=f_stim, ...]

[...]

/ branch = [trial.f_q2_self]

</trial>

<trial f_q2_self>
/ stimulustimes = [0=f_stim, ...]

[...]

/ branch = [trial.f_q3_gender]

</trial>

<trial f_q3_gender>
/ stimulustimes = [0=f_stim, ...]

[...]

</trial>

and

/ stimulustimes = [0=m_stim, ...]

[...]

/ branch = [trial.m_q2_self]

</trial>

<trial m_q2_self>
/ stimulustimes = [0=m_stim, ...]

[...]

/ branch = [trial.m_q3_gender]

</trial>

<trial q3_gender>
/ stimulustimes = [0=f_stim, ...]

[...]

</trial>

and then simply sample from them at the <block> level in whatever way you please:

/ trials =[1-100=noreplace(f_q1_like, m_q1_like)]

[...]

</block>

vz29

posted 11 Years Ago

Group: Awaiting Activation
Posts: 72, Visits: 192

thanks. I'm going to go with option 2. I want to analyze the results separately for f and m images and that information would be lost if they are both sampled from the same list (given that the file name doesn't have the gender information).

vz29

posted 11 Years Ago

Group: Awaiting Activation
Posts: 72, Visits: 192

I'm still encountering two problems using the code pasted below.

(1) the same image is presented more than once.

(2) do I need to change the script dealing with the value and itemlist?

*********

/ fontstyle = ("Gill Sans", 2.78%, false, false, false, false, 5, 0)

/ txcolor = (0, 0, 0)

/ screencolor = (255,255,255)

/ txcolor = (0, 0, 0)

/ pretrialpause = 000

/ posttrialpause = 000

/ endlock = true("Please tell the experimenter that you are finished with this portion of the experiment.")

/ inputdevice = keyboard

</defaults>

<data>

/ format = tab

/ columns = [date time build subject blocknum blockcode trialnum trialcode response correct latency stimulusitem stimulusitem stimulusitem]

/ labels = true

</data>

------------------------------------------------------------------------------------

*** EXPT CONDITIONS ****

------------------------------------------------------------------------------------

/ preinstructions = (intro0, rate)

/ blocks = [1-11 = rate; 12 = demo]

/ subjects = (1 of 1)

/ postinstructions = (end)

</expt>

------------------------------------------------------------------------------------

*** RATE ****

------------------------------------------------------------------------------------

*** BLOCK ****

------------------------------------------------------------------------------------

/ preinstructions = (rate)

/ trials =[1-40=noreplace(q1_like_f, q1_like_m)]

</block>

------------------------------------------------------------------------------------

*** TRIALS ****

------------------------------------------------------------------------------------

/ ontrialbegin = [values.itemnumber=list.itemlist.nextvalue]

/ stimulustimes = [0=f_stim, q1text_like, leftyes_reminder, rightno_reminder, leftA_reminder, rightL_reminder]

/ inputdevice = keyboard

/ validresponse = ("A" "L")

/ branch = [trial.q2_self_f]

/ trialdata = [f_stim]

</trial>

/ stimulustimes = [0=f_stim, q2text_self, leftyes_reminder, rightno_reminder, leftA_reminder, rightL_reminder]

/ inputdevice = keyboard

/ validresponse = ("A" "L")

/ branch = [trial.q3_gender_f]

/ trialdata = [f_stim]

</trial>

/ stimulustimes = [0=f_stim, q3text_gender, leftmale_reminder, rightfemale_reminder, leftA_reminder, rightL_reminder,

leftboth_reminder, rightneither_reminder, leftF_reminder, rightH_reminder]

/ inputdevice = keyboard

/ validresponse = ("A" "F" "H" "L")

/ trialdata = [f_stim]

</trial>

/ ontrialbegin = [values.itemnumber=list.itemlist.nextvalue]

/ stimulustimes = [0=m_stim, q1text_like, leftyes_reminder, rightno_reminder, leftA_reminder, rightL_reminder]

/ inputdevice = keyboard

/ validresponse = ("A" "L")

/ branch = [trial.q2_self_m]

/ trialdata = [m_stim]

</trial>

/ stimulustimes = [0=m_stim, q2text_self, leftyes_reminder, rightno_reminder, leftA_reminder, rightL_reminder]

/ inputdevice = keyboard

/ validresponse = ("A" "L")

/ branch = [trial.q3_gender_m]

/ trialdata = [m_stim]

</trial>

/ stimulustimes = [0=m_stim, q3text_gender, leftmale_reminder, rightfemale_reminder, leftA_reminder, rightL_reminder,

leftboth_reminder, rightneither_reminder, leftF_reminder, rightH_reminder]

/ inputdevice = keyboard

/ validresponse = ("A" "F" "H" "L")

/ trialdata = [m_stim]

</trial>

------------------------------------------------------------------------------------

*** TEXT FOR TRIALS ****