neurotroph

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  • Stop the “Flipping”

    Stop the “Flipping”

    I came across this interesting article at The Thesis Whisperer blog. It starts with the hypothesis being an academic is similar to “running a small, not very profitable business”. This is mainly down to two problems: Problem one: There are a lot of opportunities that could turn into nothing, so it’s best to say yes […]

    March 7, 2017
  • New Preprint: A Bayes Factor for Replications of ANOVA Results

    New Preprint: A Bayes Factor for Replications of ANOVA Results

    Already some weeks ago I have finished up some thoughts for a Replication Bayes factor for ANOVA contexts, which resulted in a manuscript that is available as pre-print at arXiv. The theoretical foundation was laid out before by Verhagen & Wagenmakers (2014) and my manuscript is mainly an extension of their approach. We have another paper […]

    March 4, 2017
  • New Paper: Impulsivity and Completion Time in Online Questionnaires

    New Paper: Impulsivity and Completion Time in Online Questionnaires

    I’ve got my first first-author-paper published in Personality and Individual Differences. The paper is titled “Reliability and completion speed in online questionnaires under consideration of personality” (doi:10.1016/j.paid.2017.02.015) and was written together with Lina and Christian. 

    February 22, 2017
  • Research is messy: Two cases of pre-registrations

    Research is messy: Two cases of pre-registrations

    Pre-registrations are becoming increasingly important for studies in psychological research. This is a much needed change since part of the “replication crisis” has to do with too much flexibility in data analysis and interpretation (p-hacking, HARK’ing and the like). Pre-registering a study with planned sample size and planned analyses allows other researchers to understand what […]

    February 16, 2017
  • How statistics lost their power – and why we should fear what comes next

    This is an interesting article from The Guardian on “post-truth” politics, where statistics and “experts” are frowned upon by some groups. William Davies shows how statistics in the political debate have evolved from the 17th century until today, where statistics are not regarded as an objective approach to reality anymore but as an arrogant and […]

    February 11, 2017
  • Predictions for Presidential Elections Weren’t That Bad

    Predictions for Presidential Elections Weren’t That Bad

    Nathan Silver’s FiveThirtyEight has had an excellent coverage of the US Presidential Elections with some great analytical pieces and very interesting insights in their models. Each and every poll predicted Hillary Clinton to win the election and FiveThirtyEight was no exception to that. Consequently, there was a lot of discussion on pollsters, their methods and […]

    November 24, 2016
  • New Paper: Reliability Estimates for Three Factor Score Estimators

    Just a short post on a new paper that is available from our department. If you happen to have calculated factor score estimators after factor analysis, e.g. using Thurstone’s Regression Estimators, you might be interested in the reliability of the resulting scores. Our paper explains how to do this, compares the reliability of three different factor […]

    October 28, 2016
  • Confidence Intervals for Noncentrality Parameters

    In recent years, it has become a notion to not only report point estimates of effect sizes, but also confidence intervals for said effect sizes. I have created a small R script to calculate the bounds of such a confidence interval in the case of t- and F-distributions. 

    September 27, 2016
  • Differences in Pollster Predictions

    Differences in Pollster Predictions

    The New York Times published an interesting piece on the differences between pollsters’ predictions. All five predictions used the same data set, so sampling differences are not of concern. Still, there was a difference of up to 5% between the predictions. 

    September 21, 2016
  • Michael Inzlicht on loosing faith in science

    Michael Inzlicht on loosing faith in science

    Michael Inzlicht has posted an article on his blog about how he lost faith in psychological science after reading the now infamous paper on “false-positive psychology”. It is interesting for me to note that my experience is somewhat different.

    August 25, 2016
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