How to use noreplace for picture stimuli across blocks?


How to use noreplace for picture stimuli across blocks?

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Message
Amarins
Amarins
Associate Member
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Group: Forum Members
Posts: 5, Visits: 34
Hi all,

In my study I have 10 blocks (with 5 trials) each and in between each block a question (agency) is asked. I want to present a total of 50 matched picture-stimuli and I don’t want the pictures to become replaced between blocks (each participant should see each pair of pictures once). However, I only can specify a no-replace argument to ensure that the pictures don’t get replaced WITHIN each block. How can I make sure that the pictures don’t get replaced ACROSS all blocks? I already tried / resetinterval = 0, but this only works within blocks. Can anyone help me?

Thanks a lot!

Below you can find my code:

<expt control>
/ blocks = [1 = ID, labelinfo; 2 = B1_products_ct; 3 = agency1_ct; 4 = B2_products_ct; 5 = agency2_ct; 6 = B3_products_ct; 7 = agency3_ct;  8 = B4_products_ct; 9 = agency4_ct; 10 = B5_products_ct; 11 = agency5_ct; 12 = B6_products_ct; 13 = agency6_ct; 14 = B7_products_ct;  15 = agency7_ct; 16 = B8_products_ct; 17 = agency8_ct; 18 = B9_products_ct; 19 = agency9_ct; 20 = B10_products_ct; 21 = agency10_ct]
</expt>

<block B1_products_ct>
/ preinstructions = (block_instructions_part2)
/ trials = [1-5 = noreplace(sus_left_ct, sus_right_ct)]
</block>

<block B2_products_ct>
/ trials = [1-5 = noreplace(sus_left_ct, sus_right_ct)]
</block>

<block B3_products_ct>
/ trials = [1-5 = noreplace(sus_left_ct, sus_right_ct)]
</block>

*etc. for all 10 product-blocks this is the same*

<block agency1_ct>
/ trials = [1 = agency]
</block>

<block agency2_ct>
/ trials = [1 = agency]
</block>

<block agency3_ct>
/ trials = [1 = agency]
</block>

*etc. for all 10 agency-blocks this is the same*

<trial sus_left_ct>
/ stimulustimes = [1 = product_susleft, product_unsright]
</trial>

<trial sus_right_ct>
/ stimulustimes = [1 = product_susright, product_unsleft]
</trial>

<picture product_susleft>
/ items = sustainable
/ size = (50%, 50%)
/ position = (25, 40)
/ resetinterval = 0
</picture>

<picture product_unsright>
/ items = unsustainable
/ select = current(product_susleft)
/ size = (50%, 50%)
/ position = (75, 40)
/ resetinterval = 0
</picture>

<picture product_susright>
/ items = sustainable
/ size = (50%, 50%)
/ position = (75, 40)
/ resetinterval = 0
</picture>

<picture product_unsleft>
/ items = unsustainable
/ select = current(product_susright)
/ size = (50%, 50%)
/ position = (25, 40)
/ resetinterval = 0
</picture>

<item sustainable>
/1 = "1s.jpg"
/2 = "2s.jpg"
/3 = "3s.jpg"
/4 = "4s.jpg"
/5 = "5s.jpg"
/6 = "6s.jpg"
/7 = "7s.jpg"
/8 = "8s.jpg"
/9 = "9s.jpg"
/10 = "10s.jpg"
/11 = "11s.jpg"
/12 = "12s.jpg"
/13 = "13s.jpg"
/14 = "14s.jpg"
/15 = "15s.jpg"
/16 = "16s.jpg"
/17 = "17s.jpg"
/18 = "18s.jpg"
/19 = "19s.jpg"
/20 = "20s.jpg"
/21 = "21s.jpg"
/22 = "22s.jpg"
/23 = "23s.jpg"
/24 = "24s.jpg"
/25 = "25s.jpg"
/26 = "26s.jpg"
/27 = "27s.jpg"
/28 = "28s.jpg"
/29 = "29s.jpg"
/30 = "30s.jpg"
/31 = "31s.jpg"
/32 = "32s.jpg"
/33 = "33s.jpg"
/34 = "34s.jpg"
/35 = "35s.jpg"
/36 = "36s.jpg"
/37 = "37s.jpg"
/38 = "38s.jpg"
/39 = "39s.jpg"
/40 = "40s.jpg"
/41 = "41s.jpg"
/42 = "42s.jpg"
/43 = "43s.jpg"
/44 = "44s.jpg"
/45 = "45s.jpg"
/46 = "46s.jpg"
/47 = "47s.jpg"
/48 = "48s.jpg"
/49 = "49s.jpg"
/50 = "50s.jpg"
</item>

<item unsustainable>
/1 = "1u.jpg"
/2 = "2u.jpg"
/3 = "3u.jpg"
/4 = "4u.jpg"
/5 = "5u.jpg"
/6 = "6u.jpg"
/7 = "7u.jpg"
/8 = "8u.jpg"
/9 = "9u.jpg"
/10 = "10u.jpg"
/11 = "11u.jpg"
/12 = "12u.jpg"
/13 = "13u.jpg"
/14 = "14u.jpg"
/15 = "15u.jpg"
/16 = "16u.jpg"
/17 = "17u.jpg"
/18 = "18u.jpg"
/19 = "19u.jpg"
/20 = "20u.jpg"
/21 = "21u.jpg"
/22 = "22u.jpg"
/23 = "23u.jpg"
/24 = "24u.jpg"
/25 = "25u.jpg"
/26 = "26u.jpg"
/27 = "27u.jpg"
/28 = "28u.jpg"
/29 = "29u.jpg"
/30 = "30u.jpg"
/31 = "31u.jpg"
/32 = "32u.jpg"
/33 = "33u.jpg"
/34 = "34u.jpg"
/35 = "35u.jpg"
/36 = "36u.jpg"
/37 = "37u.jpg"
/38 = "38u.jpg"
/39 = "39u.jpg"
/40 = "40u.jpg"
/41 = "41u.jpg"
/42 = "42u.jpg"
/43 = "43u.jpg"
/44 = "44u.jpg"
/45 = "45u.jpg"
/46 = "46u.jpg"
/47 = "47u.jpg"
/48 = "48u.jpg"
/49 = "49u.jpg"
/50 = "50u.jpg"
</item>

Dave
Dave
Supreme Being
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Group: Administrators
Posts: 9.9K, Visits: 49K
Amarins - 11/27/2019
Hi all,

In my study I have 10 blocks (with 5 trials) each and in between each block a question (agency) is asked. I want to present a total of 50 matched picture-stimuli and I don’t want the pictures to become replaced between blocks (each participant should see each pair of pictures once). However, I only can specify a no-replace argument to ensure that the pictures don’t get replaced WITHIN each block. How can I make sure that the pictures don’t get replaced ACROSS all blocks? I already tried / resetinterval = 0, but this only works within blocks. Can anyone help me?

Thanks a lot!

Below you can find my code:

<expt control>
/ blocks = [1 = ID, labelinfo; 2 = B1_products_ct; 3 = agency1_ct; 4 = B2_products_ct; 5 = agency2_ct; 6 = B3_products_ct; 7 = agency3_ct;  8 = B4_products_ct; 9 = agency4_ct; 10 = B5_products_ct; 11 = agency5_ct; 12 = B6_products_ct; 13 = agency6_ct; 14 = B7_products_ct;  15 = agency7_ct; 16 = B8_products_ct; 17 = agency8_ct; 18 = B9_products_ct; 19 = agency9_ct; 20 = B10_products_ct; 21 = agency10_ct]
</expt>

<block B1_products_ct>
/ preinstructions = (block_instructions_part2)
/ trials = [1-5 = noreplace(sus_left_ct, sus_right_ct)]
</block>

<block B2_products_ct>
/ trials = [1-5 = noreplace(sus_left_ct, sus_right_ct)]
</block>

<block B3_products_ct>
/ trials = [1-5 = noreplace(sus_left_ct, sus_right_ct)]
</block>

*etc. for all 10 product-blocks this is the same*

<block agency1_ct>
/ trials = [1 = agency]
</block>

<block agency2_ct>
/ trials = [1 = agency]
</block>

<block agency3_ct>
/ trials = [1 = agency]
</block>

*etc. for all 10 agency-blocks this is the same*

<trial sus_left_ct>
/ stimulustimes = [1 = product_susleft, product_unsright]
</trial>

<trial sus_right_ct>
/ stimulustimes = [1 = product_susright, product_unsleft]
</trial>

<picture product_susleft>
/ items = sustainable
/ size = (50%, 50%)
/ position = (25, 40)
/ resetinterval = 0
</picture>

<picture product_unsright>
/ items = unsustainable
/ select = current(product_susleft)
/ size = (50%, 50%)
/ position = (75, 40)
/ resetinterval = 0
</picture>

<picture product_susright>
/ items = sustainable
/ size = (50%, 50%)
/ position = (75, 40)
/ resetinterval = 0
</picture>

<picture product_unsleft>
/ items = unsustainable
/ select = current(product_susright)
/ size = (50%, 50%)
/ position = (25, 40)
/ resetinterval = 0
</picture>

<item sustainable>
/1 = "1s.jpg"
/2 = "2s.jpg"
/3 = "3s.jpg"
/4 = "4s.jpg"
/5 = "5s.jpg"
/6 = "6s.jpg"
/7 = "7s.jpg"
/8 = "8s.jpg"
/9 = "9s.jpg"
/10 = "10s.jpg"
/11 = "11s.jpg"
/12 = "12s.jpg"
/13 = "13s.jpg"
/14 = "14s.jpg"
/15 = "15s.jpg"
/16 = "16s.jpg"
/17 = "17s.jpg"
/18 = "18s.jpg"
/19 = "19s.jpg"
/20 = "20s.jpg"
/21 = "21s.jpg"
/22 = "22s.jpg"
/23 = "23s.jpg"
/24 = "24s.jpg"
/25 = "25s.jpg"
/26 = "26s.jpg"
/27 = "27s.jpg"
/28 = "28s.jpg"
/29 = "29s.jpg"
/30 = "30s.jpg"
/31 = "31s.jpg"
/32 = "32s.jpg"
/33 = "33s.jpg"
/34 = "34s.jpg"
/35 = "35s.jpg"
/36 = "36s.jpg"
/37 = "37s.jpg"
/38 = "38s.jpg"
/39 = "39s.jpg"
/40 = "40s.jpg"
/41 = "41s.jpg"
/42 = "42s.jpg"
/43 = "43s.jpg"
/44 = "44s.jpg"
/45 = "45s.jpg"
/46 = "46s.jpg"
/47 = "47s.jpg"
/48 = "48s.jpg"
/49 = "49s.jpg"
/50 = "50s.jpg"
</item>

<item unsustainable>
/1 = "1u.jpg"
/2 = "2u.jpg"
/3 = "3u.jpg"
/4 = "4u.jpg"
/5 = "5u.jpg"
/6 = "6u.jpg"
/7 = "7u.jpg"
/8 = "8u.jpg"
/9 = "9u.jpg"
/10 = "10u.jpg"
/11 = "11u.jpg"
/12 = "12u.jpg"
/13 = "13u.jpg"
/14 = "14u.jpg"
/15 = "15u.jpg"
/16 = "16u.jpg"
/17 = "17u.jpg"
/18 = "18u.jpg"
/19 = "19u.jpg"
/20 = "20u.jpg"
/21 = "21u.jpg"
/22 = "22u.jpg"
/23 = "23u.jpg"
/24 = "24u.jpg"
/25 = "25u.jpg"
/26 = "26u.jpg"
/27 = "27u.jpg"
/28 = "28u.jpg"
/29 = "29u.jpg"
/30 = "30u.jpg"
/31 = "31u.jpg"
/32 = "32u.jpg"
/33 = "33u.jpg"
/34 = "34u.jpg"
/35 = "35u.jpg"
/36 = "36u.jpg"
/37 = "37u.jpg"
/38 = "38u.jpg"
/39 = "39u.jpg"
/40 = "40u.jpg"
/41 = "41u.jpg"
/42 = "42u.jpg"
/43 = "43u.jpg"
/44 = "44u.jpg"
/45 = "45u.jpg"
/46 = "46u.jpg"
/47 = "47u.jpg"
/48 = "48u.jpg"
/49 = "49u.jpg"
/50 = "50u.jpg"
</item>

/resetinterval works exactly as it should. The problem is elsewhere.

<picture product_susleft>
/ items = sustainable
/ size = (50%, 50%)
/ position = (25, 40)
/ resetinterval = 0
</picture>

and

<picture product_susright>
/ items = sustainable
/ size = (50%, 50%)
/ position = (75, 40)
/ resetinterval = 0
</picture>

are independent of each other. Each samples from the full set of 50 pictures. If item #10 is sampled by <picture product_susleft>, item #10 is not removed from <picture product_susright>'s pool of available items.

If you need to have a single, common selection pool for the two <picture> elements, you need to set up a <list>:

<list allitems>
/ poolsize = 50
/ resetinterval = 0
</list>

with

<picture product_susleft>
/ items = sustainable
/ size = (50%, 50%)
/ position = (25, 40)
/ select = list.allitems.nextindex
</picture>

and

<picture product_susright>
/ items = sustainable
/ size = (50%, 50%)
/ position = (75, 40)
/ select = list.allitems.nextindex
</picture>

Edited
Last Month by Dave
Amarins
Amarins
Associate Member
Associate Member (64 reputation)Associate Member (64 reputation)Associate Member (64 reputation)Associate Member (64 reputation)Associate Member (64 reputation)Associate Member (64 reputation)Associate Member (64 reputation)Associate Member (64 reputation)Associate Member (64 reputation)

Group: Forum Members
Posts: 5, Visits: 34
Dave - 11/27/2019
Amarins - 11/27/2019
Hi all,

In my study I have 10 blocks (with 5 trials) each and in between each block a question (agency) is asked. I want to present a total of 50 matched picture-stimuli and I don’t want the pictures to become replaced between blocks (each participant should see each pair of pictures once). However, I only can specify a no-replace argument to ensure that the pictures don’t get replaced WITHIN each block. How can I make sure that the pictures don’t get replaced ACROSS all blocks? I already tried / resetinterval = 0, but this only works within blocks. Can anyone help me?

Thanks a lot!

Below you can find my code:

<expt control>
/ blocks = [1 = ID, labelinfo; 2 = B1_products_ct; 3 = agency1_ct; 4 = B2_products_ct; 5 = agency2_ct; 6 = B3_products_ct; 7 = agency3_ct;  8 = B4_products_ct; 9 = agency4_ct; 10 = B5_products_ct; 11 = agency5_ct; 12 = B6_products_ct; 13 = agency6_ct; 14 = B7_products_ct;  15 = agency7_ct; 16 = B8_products_ct; 17 = agency8_ct; 18 = B9_products_ct; 19 = agency9_ct; 20 = B10_products_ct; 21 = agency10_ct]
</expt>

<block B1_products_ct>
/ preinstructions = (block_instructions_part2)
/ trials = [1-5 = noreplace(sus_left_ct, sus_right_ct)]
</block>

<block B2_products_ct>
/ trials = [1-5 = noreplace(sus_left_ct, sus_right_ct)]
</block>

<block B3_products_ct>
/ trials = [1-5 = noreplace(sus_left_ct, sus_right_ct)]
</block>

*etc. for all 10 product-blocks this is the same*

<block agency1_ct>
/ trials = [1 = agency]
</block>

<block agency2_ct>
/ trials = [1 = agency]
</block>

<block agency3_ct>
/ trials = [1 = agency]
</block>

*etc. for all 10 agency-blocks this is the same*

<trial sus_left_ct>
/ stimulustimes = [1 = product_susleft, product_unsright]
</trial>

<trial sus_right_ct>
/ stimulustimes = [1 = product_susright, product_unsleft]
</trial>

<picture product_susleft>
/ items = sustainable
/ size = (50%, 50%)
/ position = (25, 40)
/ resetinterval = 0
</picture>

<picture product_unsright>
/ items = unsustainable
/ select = current(product_susleft)
/ size = (50%, 50%)
/ position = (75, 40)
/ resetinterval = 0
</picture>

<picture product_susright>
/ items = sustainable
/ size = (50%, 50%)
/ position = (75, 40)
/ resetinterval = 0
</picture>

<picture product_unsleft>
/ items = unsustainable
/ select = current(product_susright)
/ size = (50%, 50%)
/ position = (25, 40)
/ resetinterval = 0
</picture>

<item sustainable>
/1 = "1s.jpg"
/2 = "2s.jpg"
/3 = "3s.jpg"
/4 = "4s.jpg"
/5 = "5s.jpg"
/6 = "6s.jpg"
/7 = "7s.jpg"
/8 = "8s.jpg"
/9 = "9s.jpg"
/10 = "10s.jpg"
/11 = "11s.jpg"
/12 = "12s.jpg"
/13 = "13s.jpg"
/14 = "14s.jpg"
/15 = "15s.jpg"
/16 = "16s.jpg"
/17 = "17s.jpg"
/18 = "18s.jpg"
/19 = "19s.jpg"
/20 = "20s.jpg"
/21 = "21s.jpg"
/22 = "22s.jpg"
/23 = "23s.jpg"
/24 = "24s.jpg"
/25 = "25s.jpg"
/26 = "26s.jpg"
/27 = "27s.jpg"
/28 = "28s.jpg"
/29 = "29s.jpg"
/30 = "30s.jpg"
/31 = "31s.jpg"
/32 = "32s.jpg"
/33 = "33s.jpg"
/34 = "34s.jpg"
/35 = "35s.jpg"
/36 = "36s.jpg"
/37 = "37s.jpg"
/38 = "38s.jpg"
/39 = "39s.jpg"
/40 = "40s.jpg"
/41 = "41s.jpg"
/42 = "42s.jpg"
/43 = "43s.jpg"
/44 = "44s.jpg"
/45 = "45s.jpg"
/46 = "46s.jpg"
/47 = "47s.jpg"
/48 = "48s.jpg"
/49 = "49s.jpg"
/50 = "50s.jpg"
</item>

<item unsustainable>
/1 = "1u.jpg"
/2 = "2u.jpg"
/3 = "3u.jpg"
/4 = "4u.jpg"
/5 = "5u.jpg"
/6 = "6u.jpg"
/7 = "7u.jpg"
/8 = "8u.jpg"
/9 = "9u.jpg"
/10 = "10u.jpg"
/11 = "11u.jpg"
/12 = "12u.jpg"
/13 = "13u.jpg"
/14 = "14u.jpg"
/15 = "15u.jpg"
/16 = "16u.jpg"
/17 = "17u.jpg"
/18 = "18u.jpg"
/19 = "19u.jpg"
/20 = "20u.jpg"
/21 = "21u.jpg"
/22 = "22u.jpg"
/23 = "23u.jpg"
/24 = "24u.jpg"
/25 = "25u.jpg"
/26 = "26u.jpg"
/27 = "27u.jpg"
/28 = "28u.jpg"
/29 = "29u.jpg"
/30 = "30u.jpg"
/31 = "31u.jpg"
/32 = "32u.jpg"
/33 = "33u.jpg"
/34 = "34u.jpg"
/35 = "35u.jpg"
/36 = "36u.jpg"
/37 = "37u.jpg"
/38 = "38u.jpg"
/39 = "39u.jpg"
/40 = "40u.jpg"
/41 = "41u.jpg"
/42 = "42u.jpg"
/43 = "43u.jpg"
/44 = "44u.jpg"
/45 = "45u.jpg"
/46 = "46u.jpg"
/47 = "47u.jpg"
/48 = "48u.jpg"
/49 = "49u.jpg"
/50 = "50u.jpg"
</item>

/resetinterval works exactly as it should. The problem is elsewhere.

<picture product_susleft>
/ items = sustainable
/ size = (50%, 50%)
/ position = (25, 40)
/ resetinterval = 0
</picture>

and

<picture product_susright>
/ items = sustainable
/ size = (50%, 50%)
/ position = (75, 40)
/ resetinterval = 0
</picture>

are independent of each other. Each samples from the full set of 50 pictures. If item #10 is sampled by <picture product_susleft>, item #10 is not removed from <picture product_susright>'s pool of available items.

If you need to have a single, common selection pool for the two <picture> elements, you need to set up a <list>:

<list allitems>
/ poolsize = 50
/ resetinterval = 0
</list>

with

<picture product_susleft>
/ items = sustainable
/ size = (50%, 50%)
/ position = (25, 40)
/ select = list.allitems.nextindex
</picture>

and

<picture product_susright>
/ items = sustainable
/ size = (50%, 50%)
/ position = (75, 40)
/ select = list.allitems.nextindex
</picture>

Thank you Dave!!
GO


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