interested in psychometrics, methodology, data analysis
Brno, Czech Republic
Joined November 2018
- Tweets111
- Following61
- Followers126
- Likes272
Are you interested in how much are survey data scrutinized for their quality? Well, I was, and it seems majority of online studies are not checking the quality of data at all. Also, the usage of listwise deletion often lacks justification. Full report at doi.org/10.1177/251524592412…
Perhaps my most practical research output so far. We have developed a quick screening method to detect careless responses in your questionnaire data. Available as R package ('responsePatterns') or Shiny app (jargottfried.shinyapps.io/Au…). Please give it a try, feedback is welcome!
Accompanying paper explaining the principles: doi.org/10.7275/vyxb-gt24
Jaroslav Gottfried retweeted
Please RT! We have an online workshop "Causal inference from longitudinal data" from Mar 29-Apr 1. Highly interdisciplinary session with experts in neuroscience, psychology, political science, epidemiology & philosophy. Participation is free.
longitudinaldataanalysis.com…
(1/4)
For those wondering how much item order/proximity systematically affects answers - in common personality inventories with randomized item order, probably very little. There, we found no such effect on a general level.
Read about another side to the "item proximity effect" story, or when proximity does not impact correlations among items. #HotOffThePress at econtent.hogrefe.com/doi/10.…
I need help finding a certain discussion article. It is old, published circa 1970-1980, and short (about 2 pages), IIRC. The topic is the value of exploratory research and the dangers of relying on confirmatory approach too much. Unfortunately, I forgot details. Any ideas?
Jaroslav Gottfried retweeted
Please RT!! I will hire 4 postdocs (3 + 2 years). I want to create something completely new and fun together with you on human motivation in our new lab @uni_tue! I accept candidates from *ANY* fields from psy/neuro/edu with strong focus on methods.
tinyurl.com/y4w8ry2u
Jaroslav Gottfried retweeted
Update!
This is a set of (at least) EIGHT papers, from different authors, different hospitals, different cancers, different protein expressions.
But with identical Kaplan-Meier curves, tables values, line graphs.
See e.g. pubpeer.com/publications/39A…
Jaroslav Gottfried retweeted
We are looking for collaborators for our old projects (with completed data collection), which we were unable to finish for some time. The projects relate to judgment and decision making, decision analysis, and moral judgment. Their description is here: bahniks.com/orphaned-data/
Jaroslav Gottfried retweeted
🔥 New PhD position online, embedded in the 10y Gravitation consortium "a new science of mental disorders". Supervision team: Bernet Elzinga & yours truly :)
The PhD explores how within-person dynamic problems affect those of other people. RT appreciated
academictransfer.com/en/2896…
Jaroslav Gottfried retweeted
New preprint!
Mitchell Schijen, @lakens, and I compared the rate of "positive" results (i.e., confirmed hypotheses) in Registered Reports to a sample of standard (non-RR) papers in psychology.
We found a *very* large difference. Thread... 1/
psyarxiv.com/p6e9c
Jaroslav Gottfried retweeted
My new MOOC "Improving Your Statistical Questions" has launched! coursera.org/learn/improving…. There are 15 videos and 13 assignments, all freely available. I hope you'll like it! An overview of the contents and a thank you to all who helped in this blog post: daniellakens.blogspot.com/20…
My local journal just told me that if I put a pre-print of my article (currently being reviewed) online, they will consider it as a publication and therefore halt the review process. Is this okay? What's your opinion?
Jaroslav Gottfried retweeted
I hate @talyarkoni. Well, what I hate isn't Tal as a person, or Tal's name, or anything actually about Tal's identity. What I hate is that Tal criticizes points-of-view that I like with effective, clear-eyed arguments. He forces me to think. I hate that.
talyarkoni.org/blog/2019/07/…
Jaroslav Gottfried retweeted
Inserting statistics made easy with #tidystats, in Word! #SIPS2019
Jaroslav Gottfried retweeted
New survey about attitudes toward open science by @nicebread303 et al: researchers’ positive attitudes toward data sharing are diminished by cost/benefit considerations in practice econtent.hogrefe.com/doi/abs…
Jaroslav Gottfried retweeted
NEW PREPRINT: Journal impact is treated as a quality index, but scientists are incentivized to submit low-quality papers to high-impact journals. We apply honest signaling theory to academic publishing to understand how to promote honest paper submission: osf.io/gyeh8
Jaroslav Gottfried retweeted
New preprint with @ExPhysStudent: Simulation-Based Power-Analysis for Factorial ANOVA Designs. Get it at psyarxiv.com/baxsf. We introduce the new ANOVApower R package that allows you to easily examine power for a wide range of ANOVA designs using simulations.