iiinova — where your digital self keeps evolving

Clare Porac @ckhand.bsky.social · 02/10/2026

Left-handers have low rates of participation in the track-and-field sports of javelin and discus throwing and shot put. Find out why in my latest blog post at sites.psu.edu/clarep

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Clare Porac @ckhand.bsky.social · 03/09/2026

The typical twin study explores the hand preference resemblance between identical and fraternal twins reared together. What is the resemblance between twins when they are reared apart? Read the results of a study on this issue in my latest blog post at sites.psu.edu/clarep

sites.psu.edu

Handedness of twins reared apart

Identical or MZ (monozygotic) twins develop from a single fertilized egg or zygote that divides during the first weeks after conception. MZ twins share 100% of their genes while fraternal or DZ (dizyg...

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Clare Porac @ckhand.bsky.social · 13/08/2026

Today is International Left-handers Day. Best wishes to left-handers & a reminder that my blog, In Your Hands, has over 150 posts featuring science-based information about left-handedness. Find my blog at sites.psu.edu/clarep

sites.psu.edu

Where left is not right

Most western countries have embraced the presence of left-handers and discriminatory practices against this group have decreased significantly in recent decades. However, there are regions of the worl...

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Clare Porac @ckhand.bsky.social · 09/04/2026

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

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Clare Porac @ckhand.bsky.social · 02/03/2026

Is the incidence of left-handedness among NHL players really 60%? Find out about the difference between everyday handedness and hockey handedness in my latest blog post at sites.psu.edu/clarep

sites.psu.edu

Hockey handedness

Hockey is the sport of the moment in the USA because both the women’s and men’s USA Olympic hockey teams won gold medals at the recent Winter Olympics in Milan Cortina, Italy. I have writt...

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Clare Porac @ckhand.bsky.social · 29/01/2026

Are there more left-handers among architects than one would find in the general population? Read about the results of a recent study of award-winning architects in my latest blog post at sites.psu.edu/clarep

sites.psu.edu

Architects are right

There are several recent research papers questioning the assertion that left-handers have superior visual-spatial and artistic abilities when compared to right-handers. Architecture is a profession th...

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Clare Porac @ckhand.bsky.social · 11/08/2025

August 13 is International Left-handers Day. My latest blog post celebrates with stories about two famous left-handed musicians, Paul McCartney and Jimi Hendrix. But was Jimi Hendrix actually left-handed? Find out at sites.psu.edu/clarep

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Reposted by Clare Porac

Clare Porac @ckhand.bsky.social · 01/07/2025

A recent study examined the association between handedness type (right, left, mixed) and clinical disorders such as autism. Read about it in my latest blog post at sites.psu.edu/clarep

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Clare Porac @ckhand.bsky.social · 01/07/2025

A recent study examined the association between handedness type (right, left, mixed) and clinical disorders such as autism. Read about it in my latest blog post at sites.psu.edu/clarep

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Clare Porac @ckhand.bsky.social · 23/06/2025

One week left to purchase either the paperback or the ebook version of books 1 and 2 of The Victoria Trilogy, In Strange Places and Is This My Place. Go to store.bookbaby.com/book/in-stra... or store.bookbaby.com/book/is-this... Use coupon code VICTORIA to get the 50% discount. Offer expires July 1.

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Reposted by Clare Porac

Clare Porac @ckhand.bsky.social · 30/05/2025

A person's handedness influences where they walk when with another person. Right-handers like the right side, left-handers the left side. Ther preferred hand is on the outside of the couple. Read about it in my latest blog post at sites.psu.edu/clarep

sites.psu.edu

Whose side are you on, again?

A previous blog post described a study exploring the side preferences of heterosexual couples when they walked together. ¹ The authors found the handedness of males predicted their preferred side when...

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Clare Porac @ckhand.bsky.social · 30/05/2025

sites.psu.edu

Whose side are you on, again?

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