Likert and list element


Author
Message
Dave
Dave
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Group: Administrators
Posts: 13K, Visits: 109K
Dave - Wednesday, April 24, 2019
abhi - Wednesday, April 24, 2019
Dave - Wednesday, April 24, 2019
abhi - Wednesday, April 24, 2019
Hi,

I want to present 10 randomly selected sounds to each respondent from a list of 30 sounds and each participant rates it on a Likert scale. And the list element then presents the same 10 sounds to each respondent in subsequent blocks too.
Problem that I am facing is that instead of 10 different random sounds presented to each respondent, I find that same list of 10 sounds is presented to all respondents. There is no variation / randomness in that. 
What is wrong in this code? How can I ensure that 10 different random sounds out of 30 is presented to each respondent rather than the same list of sounds presented to each.

Thanks

<sound 1S>
/ items = 1S
/ playthrough = false
/ select = values.1S
</sound>

<item 1S>
/1="1.wav"
/2="2.wav"
/3="3.wav"
/4="4.wav"
/5="5.wav"
/6="6.wav"
/7="7.wav"
/8="8.wav"
/9="9.wav"
/10="10.wav"
/11="11.wav"
/12="12.wav"
/13="13.wav"
/14="14.wav"
/15="15.wav"
/16="16.wav"
/17="17.wav"
/18="18.wav"
/19="19.wav"
/20="20.wav"
/21="21.wav"
/22="22.wav"
/23="23.wav"
/24="24.wav"
/25="25.wav"
/26="26.wav"
/27="27.wav"
/28="28.wav"
</item>


<list 1Snumbers>
/ poolsize = 10
/ items = [sound.1S]
</list>


<values>
/ 1S = 1
</values>


<likert NewStudy1>
/ ontrialbegin = [values.1S = list.1Snumbers.nextindex]     
/ anchors = [1="Rating1"; 11=" Rating2"]
/ stimulusframes = [1 = list.1Snumbers; 100= list.1Snumbers;           200= list.1Snumbers;       300= list.1Snumbers;  400= list.1Snumbers;       500= list.1Snumbers;       600= list.1Snumbers;       700= list.1Snumbers;  800= list.1Snumbers;       900= list.1Snumbers;       1000= list.1Snumbers;     1100= list.1Snumbers;  1200= list.1Snumbers;     1300= list.1Snumbers;     1400= list.1Snumbers;     1500= list.1Snumbers;  1600= list.1Snumbers;     1700= list.1Snumbers;     1800= list.1Snumbers;     1900= list.1Snumbers;  2000= list.1Snumbers;     2100= list.1Snumbers;     2200= list.1Snumbers;     2300= list.1Snumbers;  2400= list.1Snumbers;     2500= list.1Snumbers;     2600= list.1Snumbers;     2700= list.1Snumbers;  2800= list.1Snumbers;     2900= list.1Snumbers;     3000= list.1Snumbers;     3100= list.1Snumbers;  3200= list.1Snumbers;     3300= list.1Snumbers;     3400= list.1Snumbers;     3500= list.1Snumbers;  3600= list.1Snumbers;     3700= list.1Snumbers;     3800= list.1Snumbers;     3900= list.1Snumbers;  4000= list.1Snumbers;     4100= list.1Snumbers;     4200= list.1Snumbers;     4300= list.1Snumbers;  4400= list.1Snumbers;     4500= list.1Snumbers;     4600= list.1Snumbers;     4700= list.1Snumbers;  4800= list.1Snumbers;     4900= list.1Snumbers;     5000= list.1Snumbers;     5100= list.1Snumbers;  5200= list.1Snumbers;     5300= list.1Snumbers;     5400= list.1Snumbers;     5500= list.1Snumbers;  5600= list.1Snumbers;     5700= list.1Snumbers;     5800= list.1Snumbers;     5900= list.1Snumbers;  6000= list.1Snumbers;     6100= list.1Snumbers;     6200= list.1Snumbers;     6300= list.1Snumbers;  6400= list.1Snumbers;     6500= list.1Snumbers;
]
/ fontstyle = ("Arial", 1.4%,true, false, false, false, 5, 0)
/ beginresponseframe = 1
/ anchorwidth = 150
/ recorddata = true
/ response = free
/ numpoints=11
/ position = (50, 55)
</likert>


The entire syntax doesn't make much sense because it's full of circular references. It's also unclear what you mean by "I want to present 10 randomly selected sounds to each respondent from a list of 30 sounds." Do you want to present one sound repeatedly during a given trial, and then run 10 trials with each playing a different sound repeatedly? Or do you want to run a single trial that plays 10 out of 30 sounds one after another?

At any rate, this

<list 1Snumbers>
/ poolsize = 10
/ items = [sound.1S]
</list>

makes no sense. And you should have your <trial>'s /stimulusframes display the <sound> element, not reference a <list>. I.e.

<likert NewStudy1>
/ ontrialbegin = [values.1S = list.1Snumbers.nextindex] 
/ anchors = [1="Rating1"; 11=" Rating2"]
/ stimulusframes = [1 = 1S; 100= 1S; 200= 1S; 300= 1S; 400= 1S; 500= 1S;
600= 1S; 700= 1S; 800= 1S; 900= 1S; 1000= 1S; 
...
]
/ fontstyle = ("Arial", 1.4%,true, false, false, false, 5, 0)
/ beginresponseframe = 1
/ anchorwidth = 150
/ recorddata = true
/ response = free
/ numpoints=11
/ position = (50, 55)
</likert>


Hi Dave,

What I meant is that 10 different  sounds to be selected (out of 30) and rated by respondent in Likert 1 (Familiarity) , then same 10 sounds in Likert 2 (likeability), and then same in Likert 3.
/ Stimlusfame is playing the same sound in loop till respondent responds.


#1: You only posted a single <likert> element, not multiple.
#2: If you want a single <likert> to play 10 different sounds, you need to set up 10 sound elements.

"/ Stimlusfame is playing the same sound in loop till respondent responds."

Is exactly what the code you posted is supposed to do.

Here is a quick example using <text> elements, because I don't have your .wav files.

<values>
/ s1 = 1
/ s2 = 1
/ s3 = 1
/ s4 = 1
/ s5 = 1
</values>

<list all>
/ poolsize = 30
/ selectionrate = always
</list>

<list s>
/ items = (values.s1, values.s2, values.s3, values.s4, values.s5)
/ selectionrate = always
/ selectionmode = sequence
</list>


<block myblock>
/ onblockbegin = [
values.s1 = list.all.nextindex;
values.s2 = list.all.nextindex;
values.s3 = list.all.nextindex;
values.s4 = list.all.nextindex;
values.s5 = list.all.nextindex;
]
/ trials = [1=sequence(a,b,c)]
</block>

<likert a>
/ stimulustimes = [0=s1; 1000=s2; 2000=s3; 3000=s4; 4000=s5]
/ position = (50%, 70%)
</likert>

<likert b>
/ stimulustimes = [0=s1; 1000=s2; 2000=s3; 3000=s4; 4000=s5]
/ position = (50%, 70%)
</likert>

<likert c>
/ stimulustimes = [0=s1; 1000=s2; 2000=s3; 3000=s4; 4000=s5]
/ position = (50%, 70%)
</likert>

<text s1>
/ items = sitems
/ select = list.s.nextvalue
</text>

<text s2>
/ items = sitems
/ select = list.s.nextvalue
</text>

<text s3>
/ items = sitems
/ select = list.s.nextvalue
</text>

<text s4>
/ items = sitems
/ select = list.s.nextvalue
</text>

<text s5>
/ items = sitems
/ select = list.s.nextvalue
</text>

<item sitems>
/1="1.wav"
/2="2.wav"
/3="3.wav"
/4="4.wav"
/5="5.wav"
/6="6.wav"
/7="7.wav"
/8="8.wav"
/9="9.wav"
/10="10.wav"
/11="11.wav"
/12="12.wav"
/13="13.wav"
/14="14.wav"
/15="15.wav"
/16="16.wav"
/17="17.wav"
/18="18.wav"
/19="19.wav"
/20="20.wav"
/21="21.wav"
/22="22.wav"
/23="23.wav"
/24="24.wav"
/25="25.wav"
/26="26.wav"
/27="27.wav"
/28="28.wav"
</item>

Dave
Dave
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Group: Administrators
Posts: 13K, Visits: 109K
abhi - Wednesday, April 24, 2019
Dave - Wednesday, April 24, 2019
abhi - Wednesday, April 24, 2019
Hi,

I want to present 10 randomly selected sounds to each respondent from a list of 30 sounds and each participant rates it on a Likert scale. And the list element then presents the same 10 sounds to each respondent in subsequent blocks too.
Problem that I am facing is that instead of 10 different random sounds presented to each respondent, I find that same list of 10 sounds is presented to all respondents. There is no variation / randomness in that. 
What is wrong in this code? How can I ensure that 10 different random sounds out of 30 is presented to each respondent rather than the same list of sounds presented to each.

Thanks

<sound 1S>
/ items = 1S
/ playthrough = false
/ select = values.1S
</sound>

<item 1S>
/1="1.wav"
/2="2.wav"
/3="3.wav"
/4="4.wav"
/5="5.wav"
/6="6.wav"
/7="7.wav"
/8="8.wav"
/9="9.wav"
/10="10.wav"
/11="11.wav"
/12="12.wav"
/13="13.wav"
/14="14.wav"
/15="15.wav"
/16="16.wav"
/17="17.wav"
/18="18.wav"
/19="19.wav"
/20="20.wav"
/21="21.wav"
/22="22.wav"
/23="23.wav"
/24="24.wav"
/25="25.wav"
/26="26.wav"
/27="27.wav"
/28="28.wav"
</item>


<list 1Snumbers>
/ poolsize = 10
/ items = [sound.1S]
</list>


<values>
/ 1S = 1
</values>


<likert NewStudy1>
/ ontrialbegin = [values.1S = list.1Snumbers.nextindex]     
/ anchors = [1="Rating1"; 11=" Rating2"]
/ stimulusframes = [1 = list.1Snumbers; 100= list.1Snumbers;           200= list.1Snumbers;       300= list.1Snumbers;  400= list.1Snumbers;       500= list.1Snumbers;       600= list.1Snumbers;       700= list.1Snumbers;  800= list.1Snumbers;       900= list.1Snumbers;       1000= list.1Snumbers;     1100= list.1Snumbers;  1200= list.1Snumbers;     1300= list.1Snumbers;     1400= list.1Snumbers;     1500= list.1Snumbers;  1600= list.1Snumbers;     1700= list.1Snumbers;     1800= list.1Snumbers;     1900= list.1Snumbers;  2000= list.1Snumbers;     2100= list.1Snumbers;     2200= list.1Snumbers;     2300= list.1Snumbers;  2400= list.1Snumbers;     2500= list.1Snumbers;     2600= list.1Snumbers;     2700= list.1Snumbers;  2800= list.1Snumbers;     2900= list.1Snumbers;     3000= list.1Snumbers;     3100= list.1Snumbers;  3200= list.1Snumbers;     3300= list.1Snumbers;     3400= list.1Snumbers;     3500= list.1Snumbers;  3600= list.1Snumbers;     3700= list.1Snumbers;     3800= list.1Snumbers;     3900= list.1Snumbers;  4000= list.1Snumbers;     4100= list.1Snumbers;     4200= list.1Snumbers;     4300= list.1Snumbers;  4400= list.1Snumbers;     4500= list.1Snumbers;     4600= list.1Snumbers;     4700= list.1Snumbers;  4800= list.1Snumbers;     4900= list.1Snumbers;     5000= list.1Snumbers;     5100= list.1Snumbers;  5200= list.1Snumbers;     5300= list.1Snumbers;     5400= list.1Snumbers;     5500= list.1Snumbers;  5600= list.1Snumbers;     5700= list.1Snumbers;     5800= list.1Snumbers;     5900= list.1Snumbers;  6000= list.1Snumbers;     6100= list.1Snumbers;     6200= list.1Snumbers;     6300= list.1Snumbers;  6400= list.1Snumbers;     6500= list.1Snumbers;
]
/ fontstyle = ("Arial", 1.4%,true, false, false, false, 5, 0)
/ beginresponseframe = 1
/ anchorwidth = 150
/ recorddata = true
/ response = free
/ numpoints=11
/ position = (50, 55)
</likert>


The entire syntax doesn't make much sense because it's full of circular references. It's also unclear what you mean by "I want to present 10 randomly selected sounds to each respondent from a list of 30 sounds." Do you want to present one sound repeatedly during a given trial, and then run 10 trials with each playing a different sound repeatedly? Or do you want to run a single trial that plays 10 out of 30 sounds one after another?

At any rate, this

<list 1Snumbers>
/ poolsize = 10
/ items = [sound.1S]
</list>

makes no sense. And you should have your <trial>'s /stimulusframes display the <sound> element, not reference a <list>. I.e.

<likert NewStudy1>
/ ontrialbegin = [values.1S = list.1Snumbers.nextindex] 
/ anchors = [1="Rating1"; 11=" Rating2"]
/ stimulusframes = [1 = 1S; 100= 1S; 200= 1S; 300= 1S; 400= 1S; 500= 1S;
600= 1S; 700= 1S; 800= 1S; 900= 1S; 1000= 1S; 
...
]
/ fontstyle = ("Arial", 1.4%,true, false, false, false, 5, 0)
/ beginresponseframe = 1
/ anchorwidth = 150
/ recorddata = true
/ response = free
/ numpoints=11
/ position = (50, 55)
</likert>


Hi Dave,

What I meant is that 10 different  sounds to be selected (out of 30) and rated by respondent in Likert 1 (Familiarity) , then same 10 sounds in Likert 2 (likeability), and then same in Likert 3.
/ Stimlusfame is playing the same sound in loop till respondent responds.


#1: You only posted a single <likert> element, not multiple.
#2: If you want a single <likert> to play 10 different sounds, you need to set up 10 sound elements.

"/ Stimlusfame is playing the same sound in loop till respondent responds."

Is exactly what the code you posted is supposed to do.

abhi
abhi
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Group: Forum Members
Posts: 114, Visits: 558
Dave - Wednesday, April 24, 2019
abhi - Wednesday, April 24, 2019
Hi,

I want to present 10 randomly selected sounds to each respondent from a list of 30 sounds and each participant rates it on a Likert scale. And the list element then presents the same 10 sounds to each respondent in subsequent blocks too.
Problem that I am facing is that instead of 10 different random sounds presented to each respondent, I find that same list of 10 sounds is presented to all respondents. There is no variation / randomness in that. 
What is wrong in this code? How can I ensure that 10 different random sounds out of 30 is presented to each respondent rather than the same list of sounds presented to each.

Thanks

<sound 1S>
/ items = 1S
/ playthrough = false
/ select = values.1S
</sound>

<item 1S>
/1="1.wav"
/2="2.wav"
/3="3.wav"
/4="4.wav"
/5="5.wav"
/6="6.wav"
/7="7.wav"
/8="8.wav"
/9="9.wav"
/10="10.wav"
/11="11.wav"
/12="12.wav"
/13="13.wav"
/14="14.wav"
/15="15.wav"
/16="16.wav"
/17="17.wav"
/18="18.wav"
/19="19.wav"
/20="20.wav"
/21="21.wav"
/22="22.wav"
/23="23.wav"
/24="24.wav"
/25="25.wav"
/26="26.wav"
/27="27.wav"
/28="28.wav"
</item>


<list 1Snumbers>
/ poolsize = 10
/ items = [sound.1S]
</list>


<values>
/ 1S = 1
</values>


<likert NewStudy1>
/ ontrialbegin = [values.1S = list.1Snumbers.nextindex]     
/ anchors = [1="Rating1"; 11=" Rating2"]
/ stimulusframes = [1 = list.1Snumbers; 100= list.1Snumbers;           200= list.1Snumbers;       300= list.1Snumbers;  400= list.1Snumbers;       500= list.1Snumbers;       600= list.1Snumbers;       700= list.1Snumbers;  800= list.1Snumbers;       900= list.1Snumbers;       1000= list.1Snumbers;     1100= list.1Snumbers;  1200= list.1Snumbers;     1300= list.1Snumbers;     1400= list.1Snumbers;     1500= list.1Snumbers;  1600= list.1Snumbers;     1700= list.1Snumbers;     1800= list.1Snumbers;     1900= list.1Snumbers;  2000= list.1Snumbers;     2100= list.1Snumbers;     2200= list.1Snumbers;     2300= list.1Snumbers;  2400= list.1Snumbers;     2500= list.1Snumbers;     2600= list.1Snumbers;     2700= list.1Snumbers;  2800= list.1Snumbers;     2900= list.1Snumbers;     3000= list.1Snumbers;     3100= list.1Snumbers;  3200= list.1Snumbers;     3300= list.1Snumbers;     3400= list.1Snumbers;     3500= list.1Snumbers;  3600= list.1Snumbers;     3700= list.1Snumbers;     3800= list.1Snumbers;     3900= list.1Snumbers;  4000= list.1Snumbers;     4100= list.1Snumbers;     4200= list.1Snumbers;     4300= list.1Snumbers;  4400= list.1Snumbers;     4500= list.1Snumbers;     4600= list.1Snumbers;     4700= list.1Snumbers;  4800= list.1Snumbers;     4900= list.1Snumbers;     5000= list.1Snumbers;     5100= list.1Snumbers;  5200= list.1Snumbers;     5300= list.1Snumbers;     5400= list.1Snumbers;     5500= list.1Snumbers;  5600= list.1Snumbers;     5700= list.1Snumbers;     5800= list.1Snumbers;     5900= list.1Snumbers;  6000= list.1Snumbers;     6100= list.1Snumbers;     6200= list.1Snumbers;     6300= list.1Snumbers;  6400= list.1Snumbers;     6500= list.1Snumbers;
]
/ fontstyle = ("Arial", 1.4%,true, false, false, false, 5, 0)
/ beginresponseframe = 1
/ anchorwidth = 150
/ recorddata = true
/ response = free
/ numpoints=11
/ position = (50, 55)
</likert>


The entire syntax doesn't make much sense because it's full of circular references. It's also unclear what you mean by "I want to present 10 randomly selected sounds to each respondent from a list of 30 sounds." Do you want to present one sound repeatedly during a given trial, and then run 10 trials with each playing a different sound repeatedly? Or do you want to run a single trial that plays 10 out of 30 sounds one after another?

At any rate, this

<list 1Snumbers>
/ poolsize = 10
/ items = [sound.1S]
</list>

makes no sense. And you should have your <trial>'s /stimulusframes display the <sound> element, not reference a <list>. I.e.

<likert NewStudy1>
/ ontrialbegin = [values.1S = list.1Snumbers.nextindex] 
/ anchors = [1="Rating1"; 11=" Rating2"]
/ stimulusframes = [1 = 1S; 100= 1S; 200= 1S; 300= 1S; 400= 1S; 500= 1S;
600= 1S; 700= 1S; 800= 1S; 900= 1S; 1000= 1S; 
...
]
/ fontstyle = ("Arial", 1.4%,true, false, false, false, 5, 0)
/ beginresponseframe = 1
/ anchorwidth = 150
/ recorddata = true
/ response = free
/ numpoints=11
/ position = (50, 55)
</likert>


Hi Dave,

What I meant is that 10 different  sounds to be selected (out of 30) and rated by respondent in Likert 1 (Familiarity) , then same 10 sounds in Likert 2 (likeability), and then same in Likert 3.
/ Stimlusfame is playing the same sound in loop till respondent responds.


Dave
Dave
Supreme Being (1M reputation)Supreme Being (1M reputation)Supreme Being (1M reputation)Supreme Being (1M reputation)Supreme Being (1M reputation)Supreme Being (1M reputation)Supreme Being (1M reputation)Supreme Being (1M reputation)Supreme Being (1M reputation)
Group: Administrators
Posts: 13K, Visits: 109K
abhi - Wednesday, April 24, 2019
Hi,

I want to present 10 randomly selected sounds to each respondent from a list of 30 sounds and each participant rates it on a Likert scale. And the list element then presents the same 10 sounds to each respondent in subsequent blocks too.
Problem that I am facing is that instead of 10 different random sounds presented to each respondent, I find that same list of 10 sounds is presented to all respondents. There is no variation / randomness in that. 
What is wrong in this code? How can I ensure that 10 different random sounds out of 30 is presented to each respondent rather than the same list of sounds presented to each.

Thanks

<sound 1S>
/ items = 1S
/ playthrough = false
/ select = values.1S
</sound>

<item 1S>
/1="1.wav"
/2="2.wav"
/3="3.wav"
/4="4.wav"
/5="5.wav"
/6="6.wav"
/7="7.wav"
/8="8.wav"
/9="9.wav"
/10="10.wav"
/11="11.wav"
/12="12.wav"
/13="13.wav"
/14="14.wav"
/15="15.wav"
/16="16.wav"
/17="17.wav"
/18="18.wav"
/19="19.wav"
/20="20.wav"
/21="21.wav"
/22="22.wav"
/23="23.wav"
/24="24.wav"
/25="25.wav"
/26="26.wav"
/27="27.wav"
/28="28.wav"
</item>


<list 1Snumbers>
/ poolsize = 10
/ items = [sound.1S]
</list>


<values>
/ 1S = 1
</values>


<likert NewStudy1>
/ ontrialbegin = [values.1S = list.1Snumbers.nextindex]     
/ anchors = [1="Rating1"; 11=" Rating2"]
/ stimulusframes = [1 = list.1Snumbers; 100= list.1Snumbers;           200= list.1Snumbers;       300= list.1Snumbers;  400= list.1Snumbers;       500= list.1Snumbers;       600= list.1Snumbers;       700= list.1Snumbers;  800= list.1Snumbers;       900= list.1Snumbers;       1000= list.1Snumbers;     1100= list.1Snumbers;  1200= list.1Snumbers;     1300= list.1Snumbers;     1400= list.1Snumbers;     1500= list.1Snumbers;  1600= list.1Snumbers;     1700= list.1Snumbers;     1800= list.1Snumbers;     1900= list.1Snumbers;  2000= list.1Snumbers;     2100= list.1Snumbers;     2200= list.1Snumbers;     2300= list.1Snumbers;  2400= list.1Snumbers;     2500= list.1Snumbers;     2600= list.1Snumbers;     2700= list.1Snumbers;  2800= list.1Snumbers;     2900= list.1Snumbers;     3000= list.1Snumbers;     3100= list.1Snumbers;  3200= list.1Snumbers;     3300= list.1Snumbers;     3400= list.1Snumbers;     3500= list.1Snumbers;  3600= list.1Snumbers;     3700= list.1Snumbers;     3800= list.1Snumbers;     3900= list.1Snumbers;  4000= list.1Snumbers;     4100= list.1Snumbers;     4200= list.1Snumbers;     4300= list.1Snumbers;  4400= list.1Snumbers;     4500= list.1Snumbers;     4600= list.1Snumbers;     4700= list.1Snumbers;  4800= list.1Snumbers;     4900= list.1Snumbers;     5000= list.1Snumbers;     5100= list.1Snumbers;  5200= list.1Snumbers;     5300= list.1Snumbers;     5400= list.1Snumbers;     5500= list.1Snumbers;  5600= list.1Snumbers;     5700= list.1Snumbers;     5800= list.1Snumbers;     5900= list.1Snumbers;  6000= list.1Snumbers;     6100= list.1Snumbers;     6200= list.1Snumbers;     6300= list.1Snumbers;  6400= list.1Snumbers;     6500= list.1Snumbers;
]
/ fontstyle = ("Arial", 1.4%,true, false, false, false, 5, 0)
/ beginresponseframe = 1
/ anchorwidth = 150
/ recorddata = true
/ response = free
/ numpoints=11
/ position = (50, 55)
</likert>


The entire syntax doesn't make much sense because it's full of circular references. It's also unclear what you mean by "I want to present 10 randomly selected sounds to each respondent from a list of 30 sounds." Do you want to present one sound repeatedly during a given trial, and then run 10 trials with each playing a different sound repeatedly? Or do you want to run a single trial that plays 10 out of 30 sounds one after another?

At any rate, this

<list 1Snumbers>
/ poolsize = 10
/ items = [sound.1S]
</list>

makes no sense. And you should have your <trial>'s /stimulusframes display the <sound> element, not reference a <list>. I.e.

<likert NewStudy1>
/ ontrialbegin = [values.1S = list.1Snumbers.nextindex] 
/ anchors = [1="Rating1"; 11=" Rating2"]
/ stimulusframes = [1 = 1S; 100= 1S; 200= 1S; 300= 1S; 400= 1S; 500= 1S;
600= 1S; 700= 1S; 800= 1S; 900= 1S; 1000= 1S; 
...
]
/ fontstyle = ("Arial", 1.4%,true, false, false, false, 5, 0)
/ beginresponseframe = 1
/ anchorwidth = 150
/ recorddata = true
/ response = free
/ numpoints=11
/ position = (50, 55)
</likert>


abhi
abhi
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Hi,

I want to present 10 randomly selected sounds to each respondent from a list of 30 sounds and each participant rates it on a Likert scale. And the list element then presents the same 10 sounds to each respondent in subsequent blocks too.
Problem that I am facing is that instead of 10 different random sounds presented to each respondent, I find that same list of 10 sounds is presented to all respondents. There is no variation / randomness in that. 
What is wrong in this code? How can I ensure that 10 different random sounds out of 30 is presented to each respondent rather than the same list of sounds presented to each.

Thanks

<sound 1S>
/ items = 1S
/ playthrough = false
/ select = values.1S
</sound>

<item 1S>
/1="1.wav"
/2="2.wav"
/3="3.wav"
/4="4.wav"
/5="5.wav"
/6="6.wav"
/7="7.wav"
/8="8.wav"
/9="9.wav"
/10="10.wav"
/11="11.wav"
/12="12.wav"
/13="13.wav"
/14="14.wav"
/15="15.wav"
/16="16.wav"
/17="17.wav"
/18="18.wav"
/19="19.wav"
/20="20.wav"
/21="21.wav"
/22="22.wav"
/23="23.wav"
/24="24.wav"
/25="25.wav"
/26="26.wav"
/27="27.wav"
/28="28.wav"
</item>


<list 1Snumbers>
/ poolsize = 10
/ items = [sound.1S]
</list>


<values>
/ 1S = 1
</values>


<likert NewStudy1>
/ ontrialbegin = [values.1S = list.1Snumbers.nextindex]     
/ anchors = [1="Rating1"; 11=" Rating2"]
/ stimulusframes = [1 = list.1Snumbers; 100= list.1Snumbers;           200= list.1Snumbers;       300= list.1Snumbers;  400= list.1Snumbers;       500= list.1Snumbers;       600= list.1Snumbers;       700= list.1Snumbers;  800= list.1Snumbers;       900= list.1Snumbers;       1000= list.1Snumbers;     1100= list.1Snumbers;  1200= list.1Snumbers;     1300= list.1Snumbers;     1400= list.1Snumbers;     1500= list.1Snumbers;  1600= list.1Snumbers;     1700= list.1Snumbers;     1800= list.1Snumbers;     1900= list.1Snumbers;  2000= list.1Snumbers;     2100= list.1Snumbers;     2200= list.1Snumbers;     2300= list.1Snumbers;  2400= list.1Snumbers;     2500= list.1Snumbers;     2600= list.1Snumbers;     2700= list.1Snumbers;  2800= list.1Snumbers;     2900= list.1Snumbers;     3000= list.1Snumbers;     3100= list.1Snumbers;  3200= list.1Snumbers;     3300= list.1Snumbers;     3400= list.1Snumbers;     3500= list.1Snumbers;  3600= list.1Snumbers;     3700= list.1Snumbers;     3800= list.1Snumbers;     3900= list.1Snumbers;  4000= list.1Snumbers;     4100= list.1Snumbers;     4200= list.1Snumbers;     4300= list.1Snumbers;  4400= list.1Snumbers;     4500= list.1Snumbers;     4600= list.1Snumbers;     4700= list.1Snumbers;  4800= list.1Snumbers;     4900= list.1Snumbers;     5000= list.1Snumbers;     5100= list.1Snumbers;  5200= list.1Snumbers;     5300= list.1Snumbers;     5400= list.1Snumbers;     5500= list.1Snumbers;  5600= list.1Snumbers;     5700= list.1Snumbers;     5800= list.1Snumbers;     5900= list.1Snumbers;  6000= list.1Snumbers;     6100= list.1Snumbers;     6200= list.1Snumbers;     6300= list.1Snumbers;  6400= list.1Snumbers;     6500= list.1Snumbers;
]
/ fontstyle = ("Arial", 1.4%,true, false, false, false, 5, 0)
/ beginresponseframe = 1
/ anchorwidth = 150
/ recorddata = true
/ response = free
/ numpoints=11
/ position = (50, 55)
</likert>


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