I wrote some code to check my ordinal / clmm models against the data (and to learn to use ggplo2). The function pred() is from clmm tutorial to calculate predictions based on the model. The function plot.probabilities3() is for plotting prediction and distribution form the data. Update: changed extreme subject visualization. Area seemed not appropriateContinue reading “Model–data comparison”
Category Archives: Reseach
CFP: Game Research Methods
CALL FOR CHAPTER PROPOSALS During the last few years, several textbooks for game students have become available. While these cover many areas well, the objective of this book is to provide a collection of research methods for undergraduate and graduate level students. The aim of the book is to provide a comprehensive overview of thatContinue reading “CFP: Game Research Methods”
Used game sales
A study suggest that preventing used game sales would cut game companies profits unless the game prices are lowered: “We find that this policy would reduce the average profits per game by 10% if publishers do not adjust their prices. However, if they adjust prices optimally, it would increase the average profits per game byContinue reading “Used game sales”
Measuring character identification and attitude towards a wheelchair
A note for myself. An article about how wheelchair is considered as an extension of ones body: @article{pazzaglia2013functionally, title={A Functionally Relevant Tool for the Body following Spinal Cord Injury}, author={Pazzaglia, Mariella and Galli, Giulia and Scivoletto, Giorgio and Molinari, Marco}, journal={PloS one}, volume={8}, number={3}, pages={e58312}, year={2013}, publisher={Public Library of Science}, url={http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0058312} } An article aboutContinue reading “Measuring character identification and attitude towards a wheelchair”
Digra published the first issue of its new journal
Digra has a new journal, Transactions of the Digital Games Research Association (Todigra). Its an open access journal. The whole issue as in one pdf is available via ETC Press and print copies can ordered via Lulu.
R / Ordinal Scrips, part 2
Visualizing random effects when using ordinal package and clmm. This function is based on clmm2 tutorial code and illustrates the effects of each judge taste on evaluating the bitterness of wines.
R / Ordinal Scripts
Update: Added visualizations produced with the scripts Update 2: Updated plot.probabilities() so that response variable can have arbitrary levels I have been using ordinal package to crunch data. Tutorial for mixed models is only for clmm2 and not for clmm. Here are code for visualizing predicted probabilities for clmm. All the code is based on clmm2 tutorial.
An Embodied Cognition Approach for Understanding Role-playing
Article by Simo Järvelä & me about embodied cognition and role-playing is out. Abstract The article proposes that the theories of grounded cognition and embodiment can be utilized in explaining the role-playing experience. Embodied cognition theories assume that cognition is not only a feature of the brain, but the body as a whole and it is interactionContinue reading “An Embodied Cognition Approach for Understanding Role-playing”
Video games, youth violence and crime
This study “A longitudinal study of the association between violent video game play and aggression among adolescents.” by Willoughby, Adachi, & Good, (Dev Psychol. 2012 Jul;48(4):1044-57) was today hot topic at Facebook. I am skeptical about simplistic claims (causally) linking violent video games to aggression and violent behavior and did quick search on other related statics. I found today aContinue reading “Video games, youth violence and crime”
A rule typology
I have intended to write about rule and algorithms more than a blog post. I think that it is important to understand the qualities of games in more detailed level than just games have rules. However, I might not need to do this, because Markus Montola provides a nice typology of rules in his dissertation: InternalContinue reading “A rule typology”
Petri Lankoski 