Creating a "random" combination of photos and statements


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Ishika
Ishika
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Hi,
I am trying to create an experiment in which participants will go through 8 trials in which they rate a photo and a statement which are presented together. I want to randomly present 4 control and 4 experimental statements, paired with photos of either black (out of a pool of 12 pictures) or white individuals (also out of a pool of 12). Ultimately, participants will have seen (in some random order):
Ctrl + White 
Ctrl + White
Ctrl + Black
Ctrl + Black
Exp + White
Exp + White
Exp + Black
Exp + Black
I am very new to Inquisit, and am a little confused on how to create conditions to ensure that the photo and statement are randomized, but conditionally. Any help on how to create something that performs this function is greatly appreciated. Thank you!


Dave
Dave
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Ishika - 12/23/2020
Hi,
I am trying to create an experiment in which participants will go through 8 trials in which they rate a photo and a statement which are presented together. I want to randomly present 4 control and 4 experimental statements, paired with photos of either black (out of a pool of 12 pictures) or white individuals (also out of a pool of 12). Ultimately, participants will have seen (in some random order):
Ctrl + White 
Ctrl + White
Ctrl + Black
Ctrl + Black
Exp + White
Exp + White
Exp + Black
Exp + Black
I am very new to Inquisit, and am a little confused on how to create conditions to ensure that the photo and statement are randomized, but conditionally. Any help on how to create something that performs this function is greatly appreciated. Thank you!


I don't see where or why you need any conditional randomization for the procedure you described. It's implementable using just the most basic syntax constructs covered in the tutorials ( https://www.millisecond.com/support/docs/v6/html/tutorials/tutorials.htm )

<block example>
/ trials = [1-8 = noreplace(ctrl_white, ctrl_black, exp_white, exp_black)]
</block>

<likert ctrl_white>
/ stimulusframes = [1=white_individual, ctrl_statement]
/ anchors = [1="Agree"; 7="Disagree"]
/ numpoints = 7
/ anchorwidth = 3%
/ position = (50%, 70%)
</likert>

<likert ctrl_black>
/ stimulusframes = [1=black_individual, ctrl_statement]
/ anchors = [1="Agree"; 7="Disagree"]
/ numpoints = 7
/ anchorwidth = 3%
/ position = (50%, 70%)
</likert>

<likert exp_white>
/ stimulusframes = [1=white_individual, exp_statement]
/ anchors = [1="Agree"; 7="Disagree"]
/ numpoints = 7
/ anchorwidth = 3%
/ position = (50%, 70%)
</likert>

<likert exp_black>
/ stimulusframes = [1=black_individual, exp_statement]
/ anchors = [1="Agree"; 7="Disagree"]
/ numpoints = 7
/ anchorwidth = 3%
/ position = (50%, 70%)
</likert>

<picture white_individual>
/ items = white_individuals
/ size = (25%, 25%)
/ position = (50%, 30%)
</picture>

<picture black_individual>
/ items = black_individuals
/ size = (25%, 25%)
/ position = (50%, 30%)
</picture>

<item white_individuals>
/ 1 = "white_01.jpg"
/ 2 = "white_02.jpg"
/ 3 = "white_03.jpg"
/ 4 = "white_04.jpg"
/ 5 = "white_05.jpg"
/ 6 = "white_06.jpg"
/ 7 = "white_07.jpg"
/ 8 = "white_08.jpg"
/ 9 = "white_09.jpg"
/ 10 = "white_10.jpg"
/ 11 = "white_11.jpg"
/ 12 = "white_12.jpg"
</item>

<item black_individuals>
/ 1 = "black_01.jpg"
/ 2 = "black_02.jpg"
/ 3 = "black_03.jpg"
/ 4 = "black_04.jpg"
/ 5 = "black_05.jpg"
/ 6 = "black_06.jpg"
/ 7 = "black_07.jpg"
/ 8 = "black_08.jpg"
/ 9 = "black_09.jpg"
/ 10 = "black_10.jpg"
/ 11 = "black_11.jpg"
/ 12 = "black_12.jpg"
</item>

<text ctrl_statement>
/ items = ctrl_statements
/ position = (50%, 55%)
</text>

<text exp_statement>
/ items = exp_statements
/ position = (50%, 55%)
</text>

<item ctrl_statements>
/ 1 = "ctrl statement 01"
/ 2 = "ctrl statement 02"
/ 3 = "ctrl statement 03"
/ 4 = "ctrl statement 04"
</item>

<item exp_statements>
/ 1 = "exp statement 01"
/ 2 = "exp statement 02"
/ 3 = "exp statement 03"
/ 4 = "exp statement 04"
</item>



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