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Pascal

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Pascal
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  • Hi Carlotta, the mousetrap R package offers different import functions depending on the format of the mouse-tracking data, so you should also be able to import your data and analyse it with mousetrap. Specifically, you first would have to read your …
  • Hi Carrie, that's good, then a shifted column order does not seem to cause the issue. I think you would have to provide me with some additional information so I can help you further. Specifically, could you post the code you use to read in the data …
  • Hi Carrie, without seeing the data I can only guess, but one issue that sometimes occurs when you read csv files into R is that the column names are misplaced, i.e., shifted by one column (which can e.g. happen if the csv contains row numbers which …
  • Hi Peiyao, without knowing the complete dataset I can only guess. However, from what I see in the figure I assume that this represents a plot of aggregate trajectories, probably creating using mt_plot_aggregate? If this is the case, I assume that wh…
  • Hi there, in my opinion, you can also use mouse-tracking to compare differences between participants, probably mostly related to comparing groups of participants (e.g., native and non-native speakers, as in your example). In this regard, I would pa…
  • Hi Jasper, no worries! As discussed, we currently do not have a version of the mousetrap plugin for OSWeb. However, regarding a JavaScript version: Felix' work on the mousetrap-web plugin for the lab.js experiment builder has progressed quite a bit …
  • Hi there, if mouse-tracking data are collected during the browser, it is indeed usually an issue that cursor positions are only recorded when the mouse is moved. To account for this issue, we extended the mt_resample function (documented here: http:…
  • Hi there, regarding the question if nrow(gorilla.mt$data) = 1692 makes sense? If you have 36 trials per participants, then you should have 47 participants in there as nrow should be the total number of trials in the data (i.e., number of participan…
  • Hi there, before answering your question, I would like to point out that I am not familiar with the Gorilla data format so I can probably only give you more general advice on how to format your data in a way that they are processed by mouestrap corr…
  • Hi Ester, thanks for providing a summary of the data. I would agree in that the structure seems to have the correct format required by mt_import_long . However, based on the information on the data you provide, I think that there is an issue with th…
  • Hi there, would it be possible for you to share a few exemplary rows of the dataset (mouse_dataincorrect) that you use as input for the mt_import_long function? This could make it easier to understand what might be the cause of the problem here. Bas…
  • Hi Valerio, it is possible to combine the mousetrap and the psynteract plugin for OpenSesame (we have done that a few times ourselves in the past 🙂). However, both plugins are only available for lab experiments and not available in OSWeb. Best, Pasc…
  • Hi all, 1) Regarding the installation of the mousetrap plugin for OpenSesame 3.3.0 or later (@eduard): When using OpenSesame 3.3.0 or later, you need to install the development version of the mousetrap plugin (as described here: https://github.com/P…
  • Hi there, if you only want to exclude the probelamtic trials, one "quick and dirty" solution could be to just exclude the ids that were reported directly after mt_import_mousetrap with mt_subset: m100msstop <- mt_subset(m100msstop, !m…
  • Hi there, I have a questions to better understand the issue. In your code and output it says after running mt_import_mousetrap: There were 22 warnings (use warnings() to see them) Have you inspected these warning messages and could post them here? T…
  • Hi there, this is an issue that was resolved in the current development version of the mousetrap plugin for OpenSesame. When using OpenSesame 3.3.0 or later (as in your case), you should install the development version of the mousetrap plugin (as de…
  • Hi So So, I think that calculating the distance depends on how you decide to implement the manipulation of the location of the target stimulus and response stimulus. Once you have decided on this, you can simply subtract the y positions (in case you…
  • Hi Felix, a number of example experiments including one that demonstrates how to use the shuffle horizontal operation in combination with the mousetrap plugin can be found here: https://github.com/PascalKieslich/mousetrap-os/tree/master/examples In …
  • Hi there, I have the following ideas regarding the issues you mentioned above: 1) Flipping trajectories In your preprocessing code, I did not see a step where you flip trajectories that ended on the right option to the left. If you do not do this, t…
  • Hi Mike, glad to hear the issue could be resolved. One thing I just wanted to mention (because it looked to me like you were reading in the processed MouseTracker files): in the mousetrap R package, we also provide the read_mt function (http://pasca…
  • Thanks for moving the discussion! @afkeve already opened another discussion in the mousetrap category which I answered here: https://forum.cogsci.nl/discussion/6440/mousetrap-osweb-support#latest Best, Pascal
  • At the moment, there are no plans for developing the mousetrap plugin for OSWeb, as this would require a complete in rewrite in JavaScript. See https://forum.cogsci.nl/discussion/5987/mousetrap-mouse-trajectory-tracking-in-web#latest for a related d…
  • Regarding @P_Barr's question: I think that there are still some problematic trials in your dataset that need to be excluded. Specifically, there is the above warning that you quote: In addition: Warning message: In mt_align_start_end(mt_data, use = …
  • Regarding @a.g.leontiev's question: I am not completely sure what you mean with "I meant not in the first part of a trial, but let's say first 100 of ALL trials". Do you mean you would only like to select a subset of trials for your analys…
  • Great to hear things are running smoothly now! Currently, there is no option in mousetrap that can calculate measures for only parts of the trial. However, depending on what measure you are interested in, functions like mt_deviations and mt_derivati…
  • Hi there, I think the problem might be caused by the fact that some of your trajectories do not contain unique time stamp values (i.e., there are trials where a specific timestamp value occurs multiple times). Depending on the import function that y…
  • Hi there, I also would speculate that the problem is due to missing values (NAs), probably missing values that are already occurring in the raw dataset (df_sst). Usually, mt_import_mousetrap should to a good job at checking for missing values and th…
  • Hi, good to hear that your import errors got resolved! Regarding the other issues: could you post the link to the discussion you are referring to? Best, Pascal
  • Hi there, when you say that you compared 3 cases, are you referring to 3 different conditions with mutliple observations each? If so, how many observations do you have in each condition? Which statistical test did you use to compare them? Usually, M…
  • Hi Marta, I am also happy to look into the installation errors of the mousetrap plugin if you want to share them here (+ it would be great if you could specify your operating system and OpenSesame version when doing so). However, the mousetrap plugi…

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