Why do left-handers have a performance advantage in the sport of fencing? Read about it in my latest blog post at sites.psu.edu/clarep

Congrats! 🍾🎊🎉

🎉 Great news: the Neuroanatomy Preconference Workshop at this year’s PuG is now fully booked!
✨ Thank you for the amazing interest.
But don’t worry — there are still spots available in our equally fantastic Using VR Workshop 🥽🚀
🔗 Registration: tinyurl.com/5ck47c3u
Grab your place while slots last! 🙌

Ausschreibungstext für den DGPA Early Career Award 2026

Are you a DGPA member (or thinking of becoming one 😁) conducting outstanding research in biopsychology, psychophysiology, or neuroscience? Apply now for the 2026 Early Career Award! @biodgps-dgpa.bsky.social

I am celebrating 10 years of my blog, In Your Hands. I have written over 150 posts describing handedness research. Read my comments on the 10-year history at sites.psu.edu/clarep #laterality #lefthanded #neuropsychology

How many handednesses are there? Published in Laterality: Asymmetries of Brain, Behaviour, and Cognition (Ahead of Print, 2026)

Happy to announce that the journal Laterality is inviting short commentaries to answer the question "How many handednesses are there?" We aim to facilitate an open dialogue across disciplines and species. Submission deadline is 10th July 2026.

www.tandfonline.com/doi/full/10....

Did you ever notice that Miss Piggy and Kermit the Frog are left-handers? Here is a short explanation why left-handedness is so common among the muppets.
westerhausen.dk/sinister-mup...

Handedness in Children of Traumatized Mothers Does post-traumatic stress in mothers affect their children’s handedness? A new study investigated.

Handedness in Children of Traumatized Mothers | Psychology Today www.psychologytoday.com/us/blog/the-...

New German-Language book „Forschungsmethoden klinische Psychologie und Psychotherapie - Eine praxisorientierte Open Science Perspektive“ with Annakarina Mundorf & Jutta Peterburs coming this summer at @springernature.com link.springer.com/book/9783662...

Hallucinated citations are polluting the scientific literature. What can be done? Tens of thousands of publications from 2025 might include invalid references generated by AI, a Nature analysis suggests.

Sadly, not an April Fool & also not surprising. “An analysis conducted by @nature.com in collaboration with Grounded AI suggests that at least tens of thousands of 2025 publications, including journal papers, books, & conference proceedings, probably contain invalid references generated by AI.” 🧪

Example images sketching research in the lab. Top left: MRS voxel locations in medial prefrontal cortex. Top right: EEG time-frequency representation during perceptual choice. Bottom left: screenshot from a foraging paradigm. Bottom right: Drug-induced changes in delay and effort discounting

Please repost!

We have one postdoc and one PhD student position open in my lab (starting from Sept 2026), neuroscience of decision making and learning. Join us @hhu.de in gorgeous Düsseldorf!

For details please look here:

www.psychologie.hhu.de/en/research-...

@biodgps-dgpa.bsky.social

❓Wie kann psychologische Forschung zu erfolgreicher Klimapolitik beitragen?
➡️ Ein toller und inspirierender Parlamentarischer Abend der @dgps.bsky.social mit @karllauterbach.bsky.social in Berlin!
➡️ Hier geht es direkt zu unserem Policy Ultra-Briefs: www.dgps.de/presse/polic...

Bedtime procrastination as a typical problem of self-regulation? Insights from the examination of heart rate variability, behavioral regulation and emotion regulation - Lena Mareen Grabo, Silja Bellin... Bedtime procrastination (BP), recognized as a common self-regulation issue, is linked to insufficient sleep and in turn, adverse health outcomes. However, the s...

In this cross-sectional study, lower HRV was associated with more bedtime procrastination and more behavioral and emotion regulation difficulties. 🌙

Pallidal and subthalamic stimulations modulate inter-hemispheric interaction and asymmetry in Parkinson’s disease - Molecular Psychiatry Molecular Psychiatry - Pallidal and subthalamic stimulations modulate inter-hemispheric interaction and asymmetry in Parkinson’s disease

Interesting! www.nature.com/articles/s41...

Left-Handedness in Disney Princesses and Why it Matters A new study investigates the handedness of Disney princesses over time, revealing current cultural attitudes.

Left-Handedness in Disney Princesses and Why it Matters | Psychology Today www.psychologytoday.com/us/blog/the-...

New Insights on the Gender Friendship Gap With friendship more important than ever, a new study examined whether some group are especially missing out,

New Insights on the Gender Friendship Gap | Psychology Today www.psychologytoday.com/us/blog/the-...

Information transfer between the brain's hemispheres is not passive process. It is an active process under top-down influence.
Interhemispheric transfer of sensory and working memory information is dictated by behavioral strategy
doi.org/10.64898/202...
#neuroscience

Do You Get Lost When You're Stressed? Blame Cortisol People who are stressed out have a harder time orienting themselves. A new study used neuroimaging to reveal why this happens.

Do You Get Lost When You're Stressed? Blame Cortisol | Psychology Today www.psychologytoday.com/us/blog/the-...

Check out our comment on the sustainability of neuroscientific research, now out in Nature Human Behaviour!

New comment talking about something very important: How to do sustainable, open science in neuroscience! 💪🧠

Thanks to the @igor-dgps.bsky.social team for another great collaborative piece ❤️

New paper from our IGOR Sustainability project in Nature Human Behaviour: “Sustainable neuroscience through open science” ♻️🧠

As there is no research on a dead planet, neuroscience must weigh its environmental footprint alongside its societal impact.

A thread 👇
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Isabelle was my intern last year and I thought I would try writing a science short story as a didactic #scicomm exercise - and was amazed at the result! ♥️

So here it is now for all of you to read! ☺️

I think from now on all my students might be asked if they want to try it out 😁

Cortisol treatment impairs path integration and alters grid-like representations in the male human entorhinal cortex Stress impacts navigational performance and involves cortisol release, but how cortisol impacts brain functions supporting navigation remains unclear. This study in men shows that cortisol administrat...

New study from the Institute of Cognitive Neuroscience @ruhr-uni-bochum.de in @plosbiology.org shows that #cortisol administration impairs path integration, a specific navigational process, and reduces grid-like brain activity patterns in the #entorhinal #cortex of the brain 🧠
plos.io/3NmX3eG

I enjoyed reading it!

The modified fighting hypothesis of handedness: Evidence from sharp force injuries and further considerations The modified fighting hypothesis (MFH) proposes that most humans are right-handed because it conveyed an advantage during intraspecific fights with sharp weapons, due to the leftward location of th...

Our new article: The modified fighting hypothesis of handedness: Evidence from sharp force injuries and further considerations www.tandfonline.com/doi/full/10.... #oa #evolution #laterality

Experimental path integration task. Top: While the Pure PI subtask consisted only of a grassy plain, the Landmark PI subtask additionally contained a central lighthouse serving as spatial cue. Middle: Each trial began with the “start phase”, where participants navigated to a basket (goal location), the location of which they should encode. In the following “outgoing phase,” they navigated to a variable number of trees (1–5) until reaching a tree containing an apple (retrieval location). Then, during the “incoming phase,” participants had to find the way back to the goal location before receiving feedback via zero to three stars according to performance based on the drop error. Basket and trees disappeared as soon as they were reached. Bottom left: Outgoing phase (dashed black line) and incoming phase (dotted black line) were quantified according to their spatial distances: outgoing distance corresponded to the cumulated distance from goal to retrieval location (dashed red line), and incoming distance to the Euclidean distance between retrieval and goal location (dotted red line). Bottom right: General PI performance was assessed via the drop error, which corresponded to the distance between response location (marked with an X) and goal location (solid red line). The drop error can further be differentiated into distance error, referring to the difference between retrieval-to-goal distance and retrieval-to-response distance (blue line), and rotation error, depicting the angle between the retrieval-to-goal path and the retrieval-to-response path (purple arc).

How does stress impact #navigational performance? This study shows that #cortisol administration impairs path integration, a specific navigational process, and reduces grid-like brain activity patterns in the #entorhinal #cortex @plosbiology.org 🧪 plos.io/3NmX3eG

New Insights on the Evolution of Right- and Left-Handedness Why are 90% of people right-handed and 10% left-handed? A modification of the well-known fighting hypothesis aims to explain this pattern.

New Insights on the Evolution of Right- and Left-Handedness | Psychology Today www.psychologytoday.com/us/blog/the-...

Great idea! I will think of something!

How many handednesses are there? Published in Laterality: Asymmetries of Brain, Behaviour, and Cognition (Ahead of Print, 2026)

Interesting: Laterality invites short commentaries (5–10 pages) addressing empirical, theoretical, methodological, and philosophical implications of expanding the concept of handedness. Submission deadline is 10th July 2026. www.tandfonline.com/doi/full/10....

Left-Handers Are Better at Mirror-Writing Than Right-Handers Have you ever wondered whether left-handers are better at mirror-writing than right-handers? Several studies have investigated this question.

Left-Handers Are Better at Mirror-Writing Than Right-Handers | Psychology Today www.psychologytoday.com/us/blog/the-...