Prof. Dr. Felix Schönbrodt
I currently program an automated report generation in R – participants fill out a questionnaire, and they receive a nicely formatted pdf with their personality profile. I use knitr, LaTex, and the sendmailR package. Some participants did not provide valid Continue Reading …
For the presentation of norm values, often stanines are used (standard nine). These values mark a person’s relativ position in comparison to the sample or to norm values. According to Wikipedia: The underlying basis for obtaining stanines is that a Continue Reading …
Summary: A new function in the WRS package compares many quantiles of two distributions simultaneously while controlling the overall alpha error. When comparing data from two groups, approximately 99.6% of all psychological research compares the central tendency (that is a Continue Reading …
This is the evolution of a bivariate correlation between two questionnaire scales, “hope of power” and “fear of losing control”. Both scales were administered in an open online study. The video shows how the correlation evolves from r = .69*** Continue Reading …
A little follow up to my testosterone comment (written in German): When three variables are correlated to each other, and two of the three correlations are known, the range for the third correlation is restricted according to this formula (Olkin, Continue Reading …
Although there is a weighted.mean function in R, so far I couldn’t find a implementation of weighted.var and weighted.t.test – here they are (the weighted variance is from Gavin Simpson, found on the R malining list): [cc lang=”rsplus” escaped=”true”]# weighted Continue Reading …
.. oder: die Dekonstruktion einer “wissenschaftlichen” Studie und der dazugehörigen Pressemeldung Folgendes war am 1.12.2011 im Handelsblatt zu lesen: Außerdem wird die Autorin Kai Li folgendermaßen zitiert: „Junge männliche CEOs mit viel Testosteron im Blut scheinen einfach kampfeslustiger zu sein.“ Continue Reading …
[Update Aug 2013: For a fail safe installation routine, see this up-to-date post: Installation of the WRS package] Recently I started to build a new package for R containing Wilcox’ collection of functions for robust statistics. Wilcox provides 700+ functions Continue Reading …
After months of work we finally released our homepage persoc.net. “Persoc” is a reasearch group funded by the DFG (German Research Foundation) that worked for 1.5 years on a new model of how to conceptualize the interplay of personality processes Continue Reading …