Prof. Dr. Felix Schönbrodt
This is a post-publication peer review (HIBAR: “Had I Been A Reviewer”) of the following paper: Levi, M., Li, K., & Zhang, F. (2010). Deal or no deal: Hormones and the mergers and acquisitions game. Management Science 56, 1462 -1483. Continue Reading …
I want to present a re-analysis of the raw data from two studies that investigated whether physical cleanliness reduces the severity of moral judgments – from the original study (n = 40; Schnall, Benton, & Harvey, 2008), and from a Continue Reading …
These days psychology really is exciting, and I do not mean the Förster case … In May 2014 a special issue full of replication attempts has been released – all open access, all raw data released! This is great work, Continue Reading …
In a recent post on the DataColada blog, Uri Simonsohn wrote about “We cannot afford to study effect size in the lab“. The central message is: If we want accurate effect size (ES) estimates, we need large sample sizes (he Continue Reading …
Maybe you have encountered this situation: you run a large-scale study over the internet, and out of curiosity, you frequently the correlation between two variables. My experience with this practice is usually frustrating, as in small sample sizes (and we Continue Reading …
Dear valued customer, it is a well-known scientific truth that research results which are accompanied by a fancy, colorful fMRI scan, are perceived as more believable and more persuasive than simple bar graphs or text results (McCabe & Castel, 2007; 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 …
.. 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 …
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 …