Millisecond Forums

+x

 

Dave - 1/24/2022

You can easily integrate that into the existing logic.

<defaults>
/ fontstyle = ("Arial", 5%, true)
</defaults>

<values>
/ t = 0
/ t_x = 0
/ t_color = black
/ d1 = 0
/ d1_x = 0
/ d1_color = black
/ d2 = 0
/ d2_x = 0
/ d2_color = black

/ cresp = " "
</values>

<text t>
/ items = targets
/ select = values.t
/ hposition = values.t_x
/ txcolor = values.t_color
/ erase = false
</text>

<item targets>
/ 1 = "N"
/ 2 = "X"
</item>

<text d1>
/ items = distractors
/ select = values.d1
/ hposition = values.d1_x
/ txcolor = values.d1_color
/ erase = false
</text>

<text d2>
/ items = distractors
/ select = values.d2
/ hposition = values.d2_x
/ txcolor = values.d2_color
/ erase = false
</text>

<item distractors>
/ 1 = "H"
/ 1 = "S"
/ 1 = "T"
/ 1 = "O"
</item>

// 30 trials in this example,
// 15 x target 1 ("N")
// 15 x target 2 ("X")
<list t_items>
/ items = (1,2)
/ poolsize = 10
</list>

// two distractors sampled per trial at random
<list d_items>
/ items = (1,2,3,4)
/ selectionrate = always
</list>

// 30 trials in this example,
// target 10 x in left position,
// target 10 x in middle position,
// target 10 x in right position
<list t_x>
/ items = (40%, 50%, 60%)
/ poolsize = 30
</list>

// random position for two distractors, not equal to target position
<list d_x>
/ items = (40%, 50%, 60%)
/ selectionrate = always
/ not = (values.t_x)
</list>

// 30 trials in this example,
// target 10 x in red,
// target 10 x in green,
// target 10 x in blue,
<list t_colors>
/ items = (red, green, blue)
/ poolsize = 30
</list>

// random colors for two distractors, not equal to target color
<list d_colors>
/ items = (red, green, blue)
/ selectionrate = always
/ not = (values.t_color)
</list>

<trial example>
/ ontrialbegin = [
    // select target item
    values.t = list.t_items.nextvalue;
    // select distractor items
    values.d1 = list.d_items.nextvalue;
    values.d2 = list.d_items.nextvalue;
    // select target position
    values.t_x = list.t_x.nextvalue;
    // select distractor positions
    values.d1_x = list.d_x.nextvalue;
    values.d2_x = list.d_x.nextvalue;
    // select target color
    values.t_color = list.t_colors.nextvalue;
    // and corresponding response key
    if (values.t_color == red) {
        values.cresp = "R";
    } else if (values.t_color == green) {
        values.cresp = "G";
    } else if (values.t_color == blue) {
        values.cresp = "B";
    };
    // select distractor colors
    values.d1_color = list.d_colors.nextvalue;
    values.d2_color = list.d_colors.nextvalue;
]

/ ontrialend = [
    // reset relevant lists for next trial
    list.d_items.reset();
    list.d_x.reset();
    list.d_colors.reset();
]

/ stimulusframes = [1=clearscreen, t, d1, d2]
/ validresponse = ("R", "G", "B")
/ correctresponse = (values.cresp)
</trial>

<block myblock>
/ trials = [1-30 = example]
/ correctmessage = true(correctmsg, 500)
/ errormessage = true(errormsg, 500)
</block>

<text correctmsg>
/ items = ("CORRECT")
/ color = green
/ position = (50%, 80%)
/ erase = false
</text>

<text errormsg>
/ items = ("WRONG")
/ color = red
/ position = (50%, 80%)
/ erase = false
</text>

+x

 

lukasg - 1/24/2022

When trying to replace the colour names with RGB codes, I keep getting the error code 'Missing ['. What is the issue with the following code:

<item itemCols>
/ 1 = "31,119,180"
/ 2 = "255,127,14"
/ 3 = "44,160,44"
/ 4 = "214,39,40"
/ 5 = "148,103,189"
/ 6 = "140,86,75"
/ 7 = "227,119,194"
/ 8 = "23,190,207"
</item>

<list d_colors>
/ items = item.itemCols
/ selectionrate = always
/ not = (values.t_color)
</list>