tag:blogger.com,1999:blog-987850932434001559.post3321653224154599263..comments2024-03-28T05:57:40.089+01:00Comments on The 20% Statistician: Why Within-Subject Designs Require Fewer Participants than Between-Subject DesignsDaniel Lakenshttp://www.blogger.com/profile/18143834258497875354noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-987850932434001559.post-36002272227702761202017-05-26T17:07:34.942+02:002017-05-26T17:07:34.942+02:00This comment has been removed by a blog administrator.Anonymoushttps://www.blogger.com/profile/18169495269964199627noreply@blogger.comtag:blogger.com,1999:blog-987850932434001559.post-48671645485256566892017-05-17T15:24:23.633+02:002017-05-17T15:24:23.633+02:00No, and I don't expect you to, thank you very ...No, and I don't expect you to, thank you very much for your advice! I have to get into doing simulations more, I find that really interesting.<br /><br />But yes, I'll ask the methods people at my department and see if they can help. It's strange, on the one hand reporting effect sizes, CIs etc. is more or less standard now, and on the other many people are advocating using mixed models in psychology, but somehow the two groups don't seem to intersect much.Benjaminhttp://www.uni-muenster.de/PsyIPBE/aejucks/personen/bbrummernhenrich.htmlnoreply@blogger.comtag:blogger.com,1999:blog-987850932434001559.post-21826568451952437972017-05-17T10:38:34.571+02:002017-05-17T10:38:34.571+02:00Hi, glad to hear you like the Coursera course. But...Hi, glad to hear you like the Coursera course. But I agree with you, we need more practical 'how-to' articles. I don't have any references, nor simulation code - I have 2 colleagues who do the simulations (I rarely use linear mixed models even though I probably should). I'd ask around at you uni. If you can't find anyone, send me an email, but I'm hesitant to ask for the time of my colleagues....Daniel Lakenshttps://www.blogger.com/profile/18143834258497875354noreply@blogger.comtag:blogger.com,1999:blog-987850932434001559.post-73984524088671492162017-05-17T10:35:37.505+02:002017-05-17T10:35:37.505+02:00Thank you for your swift answer! I am using linear...Thank you for your swift answer! I am using linear mixed models (via lme4/lmerTest in R) because I wanted to include covariates and there are multiple measurements per condition. But the experimental design is purely within subjects.<br /><br />Do you have any code you could share for doing those simulations and/or a blog post or even article you could link to and that I could reference in the manuscript?<br /><br />By the way, I'm about halfway through your Coursera course and enjoying it (and learning!) a lot. So thank you for that!Benjaminhttp://www.uni-muenster.de/PsyIPBE/aejucks/personen/bbrummernhenrich.htmlnoreply@blogger.comtag:blogger.com,1999:blog-987850932434001559.post-30495713334496643582017-05-16T17:24:54.068+02:002017-05-16T17:24:54.068+02:00Do you have a within design, or a mixed models des...Do you have a within design, or a mixed models design? For a paired t-test, use the formula above. For mixed models, we always just simulate data for power analysis. Daniel Lakenshttps://www.blogger.com/profile/18143834258497875354noreply@blogger.com