Different stimuli phase1/phase2

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Different stimuli phase1/phase2

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essematta	essematta posted Last Year Topic Details Share Topic
Group: Forum Members Posts: 2, Visits: 34	Hi, I am trying to design a study but I am encountering some issues in getting the desired outcome. I have two lists of stimuli (text). - List 1: 6 information presented statements - List 2: 6 information presented as questions The information included in the two list are identical, only the format (declarative vs interrogative) changes. <item statements> /1 = "A" /2 = "B” /3 = "C” /4 = "D" /5 = "E" /6 = "F” </item> <item questions> /1 = "A?" /2 = "B?” /3 = "C?” /4 = "D?" /5 = "E?" /6 = "F?” </item> In a first phase, participants should see 3 questions and 3 statements, but it is important that the 3 questions include different items from those presented in the 3 statements. Then, in a second phase, participants should see the same 3 questions and 3 statements seen in phase 1 (repeated info), plus the 3 questions and 3 statements not seen in phase 1 (new info). Also for the new info, I want the 3 questions to include different items from those presented in the 3 statements. Could you help me with that?
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Dave	Dave posted Last Year ANSWER Post Details Share Post
Group: Administrators Posts: 13K, Visits: 109K	+x essematta - 5/31/2024 Hi, I am trying to design a study but I am encountering some issues in getting the desired outcome. I have two lists of stimuli (text). - List 1: 6 information presented statements - List 2: 6 information presented as questions The information included in the two list are identical, only the format (declarative vs interrogative) changes. <item statements> /1 = "A" /2 = "B” /3 = "C” /4 = "D" /5 = "E" /6 = "F” </item> <item questions> /1 = "A?" /2 = "B?” /3 = "C?” /4 = "D?" /5 = "E?" /6 = "F?” </item> In a first phase, participants should see 3 questions and 3 statements, but it is important that the 3 questions include different items from those presented in the 3 statements. Then, in a second phase, participants should see the same 3 questions and 3 statements seen in phase 1 (repeated info), plus the 3 questions and 3 statements not seen in phase 1 (new info). Also for the new info, I want the 3 questions to include different items from those presented in the 3 statements. Could you help me with that? You're describing a fairly typical Old-New paradigm. These have been discussed here dozens of times, most recently here: https://forums.millisecond.com/Topic36045.aspx You can find many more examples via the search function.
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Dave	Dave posted Last Year ANSWER Post Details Share Post
Group: Administrators Posts: 13K, Visits: 109K	+x Dave - 5/31/2024 +x essematta - 5/31/2024 Hi, I am trying to design a study but I am encountering some issues in getting the desired outcome. I have two lists of stimuli (text). - List 1: 6 information presented statements - List 2: 6 information presented as questions The information included in the two list are identical, only the format (declarative vs interrogative) changes. <item statements> /1 = "A" /2 = "B” /3 = "C” /4 = "D" /5 = "E" /6 = "F” </item> <item questions> /1 = "A?" /2 = "B?” /3 = "C?” /4 = "D?" /5 = "E?" /6 = "F?” </item> In a first phase, participants should see 3 questions and 3 statements, but it is important that the 3 questions include different items from those presented in the 3 statements. Then, in a second phase, participants should see the same 3 questions and 3 statements seen in phase 1 (repeated info), plus the 3 questions and 3 statements not seen in phase 1 (new info). Also for the new info, I want the 3 questions to include different items from those presented in the 3 statements. Could you help me with that? You're describing a fairly typical Old-New paradigm. These have been discussed here dozens of times, most recently here: https://forums.millisecond.com/Topic36045.aspx You can find many more examples via the search function. <expt example> / onexptbegin = [ var i = 0; // pick 3 statement item numbers for encoding in block 1 while(i < 3) { list.old_statements.appenditem(list.all.nextindex); // these item numbers will be new question items in block 2 list.new_questions.appenditem(list.all.currentindex); i += 1; }; // pick the remaining 3 item numbers for questions in encoding block 1 i = 0; while(i < 3) { list.old_questions.appenditem(list.all.nextindex); // these item numbers will be new statements items in block 2 list.new_statements.appenditem(list.all.currentindex); i += 1; }; ] / blocks = [1=block.block1; 2=block.block2] </expt> <values> / itemnumber = 0 </values> // old statements and questions <list old_statements> </list> <list old_questions> </list> // new statements and questions <list new_statements> </list> <list new_questions> </list> <list all> / poolsize = 6 / selectionrate = always </list> <item statements> /1 = "A" /2 = "B" /3 = "C" /4 = "D" /5 = "E" /6 = "F" </item> <item questions> /1 = "A?" /2 = "B?" /3 = "C?" /4 = "D?" /5 = "E?" /6 = "F?" </item> <text statement> / items = item.statements / select = values.itemnumber </text> <text question> / items = item.questions / select = values.itemnumber </text> <trial encode_statement> / ontrialbegin = [ values.itemnumber = list.old_statements.nextvalue; ] / stimulusframes = [1=text.statement] / validresponse = (57) </trial> <trial encode_question> / ontrialbegin = [ values.itemnumber = list.old_questions.nextvalue; ] / stimulusframes = [1=text.question] / validresponse = (57) </trial> <block block1> / trials = [1-6 = noreplace(trial.encode_statement, trial.encode_question)] </block> <trial old_statement> / ontrialbegin = [ values.itemnumber = list.old_statements.nextvalue; ] / stimulusframes = [1=text.statement] / validresponse = (57) </trial> <trial old_question> / ontrialbegin = [ values.itemnumber = list.old_questions.nextvalue; ] / stimulusframes = [1=text.question] / validresponse = (57) </trial> <trial new_statement> / ontrialbegin = [ values.itemnumber = list.new_statements.nextvalue; ] / stimulusframes = [1=text.statement] / validresponse = (57) </trial> <trial new_question> / ontrialbegin = [ values.itemnumber = list.new_questions.nextvalue; ] / stimulusframes = [1=text.question] / validresponse = (57) </trial> <block block2> / trials = [1-12 = noreplace(trial.old_statement, trial.old_question, trial.new_statement, trial.new_question)] </block> <data> / columns = (date time subject group session blocknum blockcode trialnum trialcode stimulusitem response latency correct) </data>
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