search for: psychologists

Me and some colleagues are planning to write a textbook together ("Statistics using R") where the target audience for the book is psychologists and students of psychology. We thought that it might be a good idea to use a Wiki when writing the text. Is that a good idea? Does anybody have any experience in that direction? What alternatives are there? The tool (Wiki) would have to be able to handle tables and mathematical formulas in som...

...d by the following book: Noel, Y. (2013). Psychologie statistique avec R [Statistical psychology with R, in French], coll. PratiqueR, Paris: Springer. http://www.springer.com/psychology/book/978-2-8178-0424-8 This book provides a detailed presentation of all basics of statistical inference for psychologists, both in a fisherian and a bayesian approach. Although many authors have recently advocated for the use of bayesian statistics in psychology (Wagenmaker et al., 2010, 2011 ; Kruschke, 2010 ; Rouder et al., 2009) statistical manuals for psychologists barely mention them. This manual provides a f...

For those new to this list, I point out that Yuelin Li and I have drafted an introduction to R for psychology, trying to emphasize the things the psychologists usually do. It is at http://www.psych.upenn.edu/~baron/rpsych.pdf and http://www.psych.upenn.edu/~baron/rpsych.htm Because it is a draft, with frequent changes, we have not yet asked for it to be placed in the CRAN page. We welcome suggestions for changes. One thing I want to add to it is a disc...

...004, at 8:05 PM, r-help-request at stat.math.ethz.ch wrote: > From: Spencer Graves <spencer.graves at pdf.com> > Date: 10 August 2004 8:44:20 PM > To: Gijs Plomp <gplomp at brain.riken.jp> > Cc: r-help at stat.math.ethz.ch > Subject: Re: [R] Enduring LME confusion.... or Psychologists and > Mixed-Effects > > > Have you considered trying a Monte Carlo? The significance > probabilities for unbalanced anovas use approximations. Package nlme > provides "simulate.lme" to facilitate this. I believe this function > is also mentioned in Pinheir...

For psychologists like me (possibly for others) by far the most time-consuming detail is variable labels. I need them for just about every analysis I do. We can use special packages like Hmisc and its function spss.get to import the labels, but then nearly all the other packages don't respect the labels, even si...

Howdy! I'm a clinical psychologist desperately trying to get rid of SPSS. I just discovered R and like it quite a lot. The main reason why we're still using SPSS is the hierarchical regression where you enter bundles of variables into a linear model and get an R-sqare increase tested with an F-test. I already found add1 and drop1 but would rather need addn and dropn. Is there

Hi, I have been informed of a bug in the concord package, in that the data files containing the tabulated critical values for Kendall's W are not loaded on the command library(concord). I had assumed that the lines in install.R would correspond to the commands to load data in R, e.g. data(Wcrit01) data(Wcrit05) While these work on the command line, I get the errors: library(concord)

Hi, I have been informed of a bug in the concord package, in that the data files containing the tabulated critical values for Kendall's W are not loaded on the command library(concord). I had assumed that the lines in install.R would correspond to the commands to load data in R, e.g. data(Wcrit01) data(Wcrit05) While these work on the command line, I get the errors: library(concord)

Howdy! Could somebody point me to some good introductory readings about data mining and descriptive data analysis? I'm a psychologist and a couple of times I realized that some things just don't appear in psychological literature, e.g. I've never seen a box plot anywhere in psych journals so I'm not familiar with them. The R help function is great when it comes to explaining

Dear ExpeRts, Suppose I have a typical psychological experiment that is a within-subjects design with multiple crossed variables and a continuous response variable. Subjects are considered a random effect. So I could model > aov1 <- aov(resp~fact1*fact2+Error(subj/(fact1*fact2)) However, this only holds for orthogonal designs with equal numbers of observation and no missing values.

...nds questions to the group and anybody in the > group answers to the best of his/her knowledge. > > To tell a little about the level of proficiency I can > contribute to such a group: > I myself is a Danish psychologist teaching research method > and statistics for psychologists. I have read some parts of > the Davison/Hinkley book and find it just readable, but > difficult, and I especiallly have trouble with some of the > formulas and mathematic notations. > > I have been using S-PLUS for half a year (formerly using > SPSS exclusively)....

Dear R fans, I am preparing a lecture discussing the paper of Wilkinson and APA Task Force on Statistical Inference (1999, American Psychologist, 54, 594-604.) I'd like to demo their Figure 3B (p. 602) with R. That is to add plotMeans(...) with dots of BHH2::dotPlot(...) . Is there any elegant script to do the job? Thanks --------------- LI, Xiaoxu

Dear R-help, Please could I have some quick guidance on what I'm doing wrong when trying to instal R software? (I have read the R-FAQs and instructions, and watched youtube instructional videos on installing R, but they didn't help) I've attached screenshots to hopefully make what I've done clearer. Basically, R doesn't seem to be installing correctly and I can't figure

Hi, I wonder why factor scores produced by factanal are correlated, and I'd appreciate any hints from people that may help me to get a deeper understanding why that's the case. By the way: I'm a psychologist used to SPSS, so that question my sound a little silly to your ears. Here's my minimal example: *********************************************** v1 <-

...to introduce confidence intervals of various "effect sizes" to my students. Surely, I'll recommend the package MBESS in R. Currently, it means I have to recommend R's interface at first. As a statistics teacher in a dept of psychology, I often have to reply why not to teach SPSS. Psychologists and their students hate to memorize codes, or even to call any function with a list of parameters. I know if I have an online R platform with a wiki html-form design, I can bypass the function calls and headache parameters to expose the power of R. Rcmdr and its plugins help some, but students like...

Hi, I have a student trying to run R on an Apple (OS 10.3.9). She tried to cut-and-paste the data via the code: data<-read.table(pipe("pbpaste")) But she keeps getting the error message: 'error in pipe("pbpaste"): pipe connections are not available on this system' I do not know much about using an Apple. Has anyone run into this before? Does anyone have any ideas

I do not know if I have a problem or not. The R script at the end of this email seems to run properly and a I get a boxplot that looks proper but I get the long string of messages during execution of the script looking like: ... The following object(s) are masked from dat ( position 8 ) : sugar The following object(s) are masked from dat ( position 9 ) :

Hi, I'm attending summer School at UCLA (IPAM) on "probabilistics models of cognition". I have been an R-user since v. 1.4.1, but was trained in the frequentist tradition (as most psychologists!). I found that all faculty here use matlab and Murphy's bayes net toolbox. I have not had the need to use matlab before, and would love to stick to R for graphics models and bayesian modeling in general (even if it takes me extra time to cross-code the examples in matlab into R). I...

I'm an experimental psychologist and when I run ANOVA analysis in SPSS, I normally ask for a test of non-sphericity (Box's M-test). I also ask for output of the corrections for non-sphericity, such as Greenhouse-Geisser and Huhn-Feldt. These tests and correction factors are commonly used in the journals for experimental and other psychology reports. I have been switching from SPSS to R

Hi! I am a psychologist who suspects that the only sensible way to analyse a particular data set is to use generalised linear mixed models. I am hoping that someone might be able to point me in the right direction to find some very practical hands on documentation that might be able to talk me through actually doing such an analysis? So far in my searches the most useful document I have turned