Back buttons in a trial

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Back buttons in a trial

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inquisituser22	inquisituser22 posted 5 Years Ago Topic Details Share Topic
Group: Forum Members Posts: 96, Visits: 339	Hello, I would like to add a back button for participants in my experiment to return to former pages to reference them for information. Here is my current script, which instructs participants to press "space bar" to advance through the pages, so I just need to add something for going back through pages. Thank you very much! <trial Psych> / stimulusframes = [1=Psych] / correctresponse = (" ") / validresponse = (" ") / response = correct </trial>
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Dave	Dave posted 5 Years Ago ANSWER Post Details Share Post
Group: Administrators Posts: 12K, Visits: 98K	+x inquisituser22 - Thursday, February 21, 2019 Hello, I would like to add a back button for participants in my experiment to return to former pages to reference them for information. Here is my current script, which instructs participants to press "space bar" to advance through the pages, so I just need to add something for going back through pages. Thank you very much! <trial Psych> / stimulusframes = [1=Psych] / correctresponse = (" ") / validresponse = (" ") / response = correct </trial> You can do that like so: <values> / itemnumber = 1 </values> <block psychblock> / stop = [ values.itemnumber >= 5; ] / trials = [1=Psych] </block> //press space to advance, press backspace to go back <trial Psych> / ontrialend = [ if (trial.Psych.response == 57 && values.itemnumber < 5) values.itemnumber += 1; ] / ontrialend = [ if (trial.Psych.response == 14 && values.itemnumber > 1) values.itemnumber -= 1; ] / stimulusframes = [1=Psych] / validresponse = (57, 14) / branch = [ trial.Psych; ] </trial> <text psych> / items = psychitems / select = values.itemnumber </text> <item psychitems> / 1 = "Page 1" / 2 = "Page 2" / 3 = "Page 3" / 4 = "Page 4" </item>
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inquisituser22	inquisituser22 posted 5 Years Ago ANSWER Post Details Share Post
Group: Forum Members Posts: 96, Visits: 339	+x inquisituser22 - Monday, February 25, 2019 +x Dave - Thursday, February 21, 2019 +x inquisituser22 - Thursday, February 21, 2019 Thank you very much, Dave! Hello, I would like to add a back button for participants in my experiment to return to former pages to reference them for information. Here is my current script, which instructs participants to press "space bar" to advance through the pages, so I just need to add something for going back through pages. Thank you very much! <trial Psych> / stimulusframes = [1=Psych] / correctresponse = (" ") / validresponse = (" ") / response = correct </trial> You can do that like so: <values> / itemnumber = 1 </values> <block psychblock> / stop = [ values.itemnumber >= 5; ] / trials = [1=Psych] </block> //press space to advance, press backspace to go back <trial Psych> / ontrialend = [ if (trial.Psych.response == 57 && values.itemnumber < 5) values.itemnumber += 1; ] / ontrialend = [ if (trial.Psych.response == 14 && values.itemnumber > 1) values.itemnumber -= 1; ] / stimulusframes = [1=Psych] / validresponse = (57, 14) / branch = [ trial.Psych; ] </trial> <text psych> / items = psychitems / select = values.itemnumber </text> <item psychitems> / 1 = "Page 1" / 2 = "Page 2" / 3 = "Page 3" / 4 = "Page 4" </item> Thank you very much, Dave!
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