Log driver of meta-analysis | R dev #metagear #juicr #switchboard & #OpenMEE | Ecol&Evol Prof @USouthFlorida | open courses youtube.com/c/LajeunesseLab
Joined April 2016
- Tweets 791
- Following 1,099
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256 Photos and videos
Pinned Tweet
4 Dec 2020
Hi all, I started my winter session meta-analysis course on YouTube!
Join me as I muddle my way through an entire synthesis project. It’s meant as an entry to research synthesis, so expect some lighthearted fun with new posts nearly daily :-)
youtu.be/rM4MQA5hU6c
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Marc J. Lajeunesse retweeted
Ecologists love response ratios for meta-analysis❤️
But… they can’t be converted into other effect sizes—making it impossible to have a unified dataset of all published effect sizes in ecology
I fixed this with a conversion to Hedges’ d !!
Link to paper below:
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Ecologists love response ratios for meta-analysis❤️
But… they can’t be converted into other effect sizes—making it impossible to have a unified dataset of all published effect sizes in ecology
I fixed this with a conversion to Hedges’ d !!
Link to paper below:
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Ecology letters paper here: doi.org/10.1111/ele.70335
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Here’s an old vid where I outline the problem… I was wrong in so many ways, but articulating the problem out loud help push me take the problem more seriously 😊
youtu.be/a4D-DSKE2J8?si=Gthr… via @YouTube
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Marc J. Lajeunesse retweeted
9 Nov 2022
There is tremendous risk in repeatedly analyzing data as it comes in…
For example, in the absence of any effect, the p-values of repeated t-tests on a growing dataset will randomly walk between 1 and 0!
Thanks to @lakens for inspiring this simulation!
#RStats #dataviz
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Marc J. Lajeunesse retweeted
2 Dec 2025
Alhamdulillah! Exciting News 🌳
Our meta-analysis on the effects of tree diversity on forest transpiration has just been published in Journal of Ecology! A big thank you to my amazing co-authors for their collaboration and hard work!
@aumaheu @JEcology
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2 Dec 2025
Thanks! This is so cool! Maybe I should start reposting again 🤔
2 Dec 2025
@LajeunesseLab Thanks, Mark! I learned meta-analysis from your excellent YouTube tutorial Hard-Boiled Synthesis (Fall 2020).
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Marc J. Lajeunesse retweeted
11 Jun 2025
Curious about teaching meta-analysis?🤨
Catch my talk about how my approach to teaching this tool has changed throughout the years
Starting at 05:00 AM EDT on YouTube during the 2nd day of the ESMARConf2025 conference, link found below ⬇️
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11 Jun 2025
Curious about teaching meta-analysis?🤨
Catch my talk about how my approach to teaching this tool has changed throughout the years
Starting at 05:00 AM EDT on YouTube during the 2nd day of the ESMARConf2025 conference, link found below ⬇️
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Marc J. Lajeunesse retweeted
8 Nov 2024
Juicr is relatively easy to get the hang of. If using Mac, closing X11 really upsets R Studio, so make sure to save your work before closing X11.
youtu.be/tiL-gZgN9Qk?si=KZs1…
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9 Oct 2024
As I have a🍺 & wait for #Milton to take my home…
I’m reminded of simpler times, when I decided to post 25 hours of #YouTube videos of me doing a complete meta-analysis from scratch on a topic I barely knew anything about
Do what you love friends!
youtu.be/rM4MQA5hU6c?si=BDii…
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Marc J. Lajeunesse retweeted
1 Oct 2024
Very proud of @coraliewilliams 's first #PhD paper @MethodsEcolEvol !
Improving reporting of statistical simulation studies for EcoEvo and beyond
besjournals.onlinelibrary.wi…
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Marc J. Lajeunesse retweeted
26 Oct 2022
Meta-analysis is formal & explicit -- don’t get fooled by incomplete applications for synthesizing research
But how do you separate the wheat from chaff?
Here’s a 10min YouTube video of the 3 defining features of a high-quality meta-analysis 💪
youtu.be/3XkC_jetn-U
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Marc J. Lajeunesse retweeted
3 Jul 2024
A couple of months ago a paper in @science used a "meta-analysis" to summarise the evidence on the success of conservation action. @metanutter & I had a look at the paper and identified a number of issues that are applicable to many such papers 1/11
2 Jul 2024
My research is available on @ResearchGate: researchgate.net/publication…
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Marc J. Lajeunesse retweeted
30 May 2024
My first day @CityofEdmonton @UAlberta - here to create a Centre for Open Science & Synthesis in #Ecology & #Evolution. Looking for ~5 postdocs to join me in establishing the centre. Please apply - i-deel.org/opportunities.htm… Please RT
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