RE: Dual task paradigm: recall of numbers and video evaluation

Back

Home
»
Millisecond Forums
»
Inquisit 4
»
RE: Dual task paradigm: recall of numbers and video evaluation

Dual task paradigm: recall of numbers and video evaluation

Author	Message
rouge	rouge posted 11 Years Ago HOT Topic Details Share Topic
Group: Forum Members Posts: 32, Visits: 73	Dear readers, in regard to a dual task paradigm, I would like to ask following question: Subjects shall read a string of numbers and then recall it later (first part of the task) - for example: <openended 801359770> / stimulustimes = [0=fixation; 1000=801359770; 2000=mask] / validresponse = (anyresponse) / correctresponse = ("801359770") </openended> AFTER the presentation of the string and BEFORE recalling the string via keyboard, they shall watch a movie and evaluate it. <trial Videos_Tor> / stimulustimes = [0=fixation, Videos_kein_Tor, Question] / validresponse = (a, l) / correctresponse = (l) /pretrialpause = 500 </trial> Is it possible to build the <trial> within <openended> ? Or do I have to construct this on a <block> level? And if so - is there any possibility to program the open answering formate from the recall task on a <block> level? Thank you very much in advance for answering! And all the best greetings!
	Reply Like 69
Dave	Dave posted 11 Years Ago ANSWER Post Details Share Post
Group: Administrators Posts: 13K, Visits: 108K	> Is it possible to build the <trial> within <openended> No. An <openended> element is a <trial> element. Hence you are asking whether a <trial> can be embedded in a <trial>, which does not make any sense within Inquisit's framework. > Or do I have to construct this on a <block> level? Yes. Run a trial presenting the number string. Follow that by your video / evaluation trial. Follow that up with the <openended> trial collecting the recalled number string. > And if so - is there any possibility to program the open answering formate from the recall task on a <block> level? If have no idea what that's supposed to mean, I'm afraid.
	Reply Like 19
rouge	rouge posted 11 Years Ago ANSWER Post Details Share Post
Group: Forum Members Posts: 32, Visits: 73	Dear David, thank you very much for your answer! It helped a lot :-) ! Best greetings and have a good day!
	Reply Like 19
rouge	rouge posted 11 Years Ago ANSWER Post Details Share Post
Group: Forum Members Posts: 32, Visits: 73	Dear Dave, in regard to above mentionned experiment I would like to ask you another question. The main features of the experiment are as follows: 1. the subject is presented a string of letters/numbers, which shall be remembered 2. a video is presented that should be evaluated 3. after the video presentation, the string of letters/numbers shall be written down With your help I programmed this text: <item cognitive_load> /1="V98PYXGX" /2="4XU01AT8" /3="AVLWVW7W" </item> <item Videos_kein_Tor> /1="Video_2.mp4" /2="Video_3.mp4" /3="Video_4.mp4" </item> <item Videos_Tor> /1="Video_55.mp4" /2="Video_57.mp4" /3="Video_59.mp4" </item> <text fixation> / items = ("+") </text> <text mask> / items = (" ") </text> <text Frage_Tor_kein_Tor> / items = ("Tor oder kein Tor?") </text> <text Entscheidung_Manipulation> / items = ("Entscheiden Sie spontan/reflektiv!") / size = (450,200) / txcolor = (50, 50, 255) / position = (50%, 52%) / valign = top </text> <text erinnerung_schreiben> / items = ("Bitte schreiben Sie jetzt die erinnerte Reihe auf"") </text> <video Videos_kein_Tor> / items = Videos / playthrough = true / size = (30%, 30%) </video> <video Videos_Tor> / items = Videos / playthrough = true / size = (30%, 30%) </video> <trial playvideo_kein_Tor> / stimulustimes = [0=fixation, Videos_kein_Tor, Frage_Tor_kein_Tor] / validresponse = (a, l) / correctresponse = (l) / pretrialpause = 500 </trial> <trial playvideo_Tor> / stimulustimes = [0=fixation, Videos_Tor, Frage_Tor_kein_Tor] / validresponse = (a, l) / correctresponse = (a) /pretrialpause = 500 </trial> <trial V98PYXGX_1> /stimulustimes = [0=fixation, 1000=V98PYXGX), 5000=mask] </trial> <openended V98PYXGX_2> / stimulustimes = [0=schreiben_erinnerung] / validresponse = (anyresponse) / correctresponse = ("V98PYXGX") </openended> <block basic_1> /trials = [1 = V98PYXGX_1; 2 = noreplace(playvideo_kein_Tor, playvideo_Tor); 3 = V98PYXGX_2] </block> <trial 4XU01AT8_1> /stimulustimes = [0=fixation, 1000=4XU01AT8), 5000=mask] </trial> <openended 4XU01AT8_2> / stimulustimes = [0=schreiben_erinnerung] / validresponse = (anyresponse) / correctresponse = ("4XU01AT8") </openended> <block basic_2> /trials = [1 = 4XU01AT8_1; 2 = noreplace(playvideo_kein_Tor, playvideo_Tor); 3 = 4XU01AT8_2] </block> <trial AVLWVW7W_1> /stimulustimes = [0=fixation, 1000=AVLWVW7W), 5000=mask] </trial> <openended AVLWVW7W_2> / stimulustimes = [0=schreiben_erinnerung] / validresponse = (anyresponse) / correctresponse = ("AVLWVW7W") </openended> <block basic_3> /trials = [1 = AVLWVW7W_1; 2 = noreplace(playvideo_kein_Tor, playvideo_Tor); 3 = AVLWVW7W_2] </block> <block das_Grosse_Ganze> / trials = [1-3 = noreplace(basic_1, basic_2, basic_3)] / preinstructions = (Instruktion_1, Instruktion_2, Instruktion_3) / postinstructions = (thank_you) </block> Now, my question: For EACH SET of "string presentation - video presentation - string remembering" I wrote an individual block (e.g. = block_1 ). The blocks (block_1, block_2, block_3,...) are picked randomly. However, I also want that within each set of "string presentation - video presentation - string remembering" the video is picked randomly. That means: 1. it shall be randomly selected weather the video comes from the <items_Tor> or <items_kein_Tor> and 2. additionaly, within <items_Tor> or <items_kein_Tor> the final video shall be picked randomly. Honestly, I am not sure about weather my text does already provide the required aspects or not? Is the task too complex, too be achieved by an inquisit-beginner :-) ? Thank you very much in advance for your answer, all the best!
	Reply Like 16
Dave	Dave posted 11 Years Ago ANSWER Post Details Share Post
Group: Administrators Posts: 13K, Visits: 108K	> 1. it shall be randomly selected weather the video comes from the <items_Tor> or <items_kein_Tor> and > 2. additionaly, within <items_Tor> or <items_kein_Tor> the final video shall be picked randomly. What does "random" mean? Random selection without replacement? Random selection with replacement? If you want to keep stimulus selection intact across blocks, you need to make use of the /resetinterval attribute (details available in the documentation).
	Reply Like 17
Dave	Dave posted 11 Years Ago ANSWER Post Details Share Post
Group: Administrators Posts: 13K, Visits: 108K	For the record, I would also like to point out that it seems unnecessary to set up separate <block>s for each and every alphanumerical string. This can be accomplished much more efficiently: <block myblock> / trials = [1,4,7,10=displaynumberstring; 2,5,8,11=noreplace(displayvideoa, displayvideob); 3,6,9,12=recallnumberstring] </block> <trial displaynumberstring> / stimulustimes = [0=fixation; 1000=numberstring; 2000=mask] / validresponse = (noresponse) / trialduration = 2500 </trial> <trial displayvideoa> / stimulustimes = [0=dummytext, vida] / validresponse = (57) </trial> <trial displayvideob> / stimulustimes = [0=dummytext, vidb] / validresponse = (57) </trial> <openended recallnumberstring> / stimulustimes = [0=recalltext] / validresponse = (anyresponse) / iscorrectresponse = [openended.recallnumberstring.response==text.numberstring.currentitem] / position = (50%, 70%) </openended> <text fixation> / items = ("+") </text> <text numberstring> / items = ("1234", "4321", "5678", "8765") </text> <text mask> / items = ("XXXXXXXX") </text> <text dummytext> / items = ("Imagine you are watching and evaluating a video in this trial... Press the spacebar to move on.") / position = (50%, 25%) </text> <text vida> / items = ("Imagined Video A1", "Imagined Video A2") </text> <text vidb> / items = ("Imagined Video B1", "Imagined Video B2") </text> <text recalltext> / items = ("Enter the number you saw before the (imagined) video:") </text>
	Reply Like 18
rouge	rouge posted 11 Years Ago ANSWER Post Details Share Post
Group: Forum Members Posts: 32, Visits: 73	Dear David, thank you very much for your note! Great news :-) !! It safes a lot of time :-) . Otherwise, I would have generated 50 single blocks! In regard to your question - I meant randomized selection without replacing. Sorry! I will try to work with the /resetinterval attribute! Again: thanx a lot!
	Reply Like 16
rouge	rouge posted 11 Years Ago ANSWER Post Details Share Post
Group: Forum Members Posts: 32, Visits: 73	Dear Dave, do I assume right that I don´t need the /resetinterval, if I am using your suggested version, in order to randomly present (without replacement) both numbers of strings and the videos? text fixation> / items = ("+") </text> <text mask> / items = (" ") </text> <text numberstring> / items = ("V98PYXGX", "4XU01AT8", "AVLWVW7W", "VIT4HXW7", "RXUH7RN8", "ATT1I0JO", "C5JI7TJY", "90295KFH", "5L24Y4DP", "RAKJLQDJ", "ANG56I37", "S98KJTLM", "KHBNLF3Y", "OIXR69Z3", "BQ2VMEHL", "YK04BUNL", "I53XWSDP", "DLNZW9B8", "0YIN1MRV", "2ABD2KOL", "EL9QFC6O", "00NJ3FGO", "INP0G5HL", "OS1Y4SR6", "MYJLAYYG", "6KHXKFDW", "CSDUDFXG", "XASVU8VF", "RQAT5N7R", "2CE5MPT2", "I6XJE9OL", "U9K3Y1QW", "PTYNOSDX", "CX75QMXH", "RZ75NF43", "Q7A8AVKF", "NZL2FIC6", "R7PKXNHW", "6TJ9XSBX", "V29NR4SZ", "4MYK5SAE", "7201R4V1", "MRA8PEZQ", "9DL88Y5Y", "CKRBDSZ9", "UFY5TOQ4", "X2L91DWF" </text> <text Frage_Tor_kein_Tor> / items = ("Tor oder kein Tor?") </text> <text Entscheidung_Manipulation> / items = ("Entscheiden Sie!") / size = (450,200) / txcolor = (50, 50, 255) / position = (50%, 52%) / valign = top </text> <text recalltext> / items = ("Bitte schreiben Sie jetzt die erinnerte Reihe auf"") </text> <trial displaynumberstring> / stimulustimes = [0=fixation; 1000=numberstring; 5000=mask] / validresponse = (noresponse) / trialduration = 5500 </trial> <video Videos_kein_Tor> / items = Videos / playthrough = true / size = (30%, 30%) </video> <video Videos_Tor> / items = Videos / playthrough = true / size = (30%, 30%) </video> <trial playvideo_kein_Tor> / stimulustimes = [0=fixation; Videos_kein_Tor; Frage_Tor_kein_Tor] / validresponse = (a, l) / correctresponse = (l) / pretrialpause = 500 </trial> <trial playvideo_Tor> / stimulustimes = [0=fixation; Videos_Tor; Frage_Tor_kein_Tor] / validresponse = (a, l) / correctresponse = (a) /pretrialpause = 500 </trial> <openended recallnumberstring> / stimulustimes = [0=recalltext] / validresponse = (anyresponse) / iscorrectresponse = [openended.recallnumberstring.response == text.numberstring.currentitem] / position = (50%, 70%) </openended> <block myblock> / trials = [1,4,7,10,13,16,19,22,25,28,31,34,37,40,43,46=noreplace(displaynumberstring); 2,5,8,11,14,17,20,23,26,29,32,35,38,41,44,47=noreplace(displayvideoa, displayvideob); 3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48=noreplace(recallnumberstring)] </block> Thank you very much in advance for your answer!
	Reply Like 18
Dave	Dave posted 11 Years Ago ANSWER Post Details Share Post
Group: Administrators Posts: 13K, Visits: 108K	If everything happens in a single block, you don't need /resetinterval (but it would not hurt either).
	Reply Like 19
rouge	rouge posted 11 Years Ago ANSWER Post Details Share Post
Group: Forum Members Posts: 32, Visits: 73	ok! great - thank you for your fast and kind help! best greetings
	Reply Like 16