Sean Duffy
@profduff.bsky.social
Psychology professor at Rutgers, cyclist, urbanist, photographer from Philadelphia.
The sunset off the septa line in Philly always hits hard
January 13, 2026 at 11:41 AM
The sunset off the septa line in Philly always hits hard
Like no one has ever in the history of the world had a picture of themselves at the Palais Garnier! In fact their pictures are meta because there are other influensters getting their own pictures taken in the background. It’s influensters all the way down! 😹
January 11, 2026 at 7:27 PM
Like no one has ever in the history of the world had a picture of themselves at the Palais Garnier! In fact their pictures are meta because there are other influensters getting their own pictures taken in the background. It’s influensters all the way down! 😹
Up there and in Barcelona at Sagrada Família. When I was there last some influenster was getting pictures taken and had staff (the woman on the left) as enforcers to keep people out of frame!
January 11, 2026 at 7:19 PM
Up there and in Barcelona at Sagrada Família. When I was there last some influenster was getting pictures taken and had staff (the woman on the left) as enforcers to keep people out of frame!
Also there’s this to miss (someone sent this to me asking if I know where this is in Paris!) 🙄😹
January 11, 2026 at 6:11 PM
Also there’s this to miss (someone sent this to me asking if I know where this is in Paris!) 🙄😹
Walked through Philadelphia’s Italian Market today after a long absence. Great to see old faces and new places! But sad that some mainstays gone too. Still think it’s the best street in Philly 😻
January 9, 2026 at 5:23 PM
Walked through Philadelphia’s Italian Market today after a long absence. Great to see old faces and new places! But sad that some mainstays gone too. Still think it’s the best street in Philly 😻
Every station needs a cat station master! Why are the Japanese always ahead of us?
January 9, 2026 at 1:02 PM
Every station needs a cat station master! Why are the Japanese always ahead of us?
Was in Philadelphia city hall today…such a gorgeous building in the best country in America! (we often talk about Philadelphia being its own separate country in light of recent events…)
January 5, 2026 at 4:54 PM
Was in Philadelphia city hall today…such a gorgeous building in the best country in America! (we often talk about Philadelphia being its own separate country in light of recent events…)
Every NYE there is a Twilight Zone marathon on TV and I think I’m going to propose a course at Rutgers where we just watch episodes of the Twilight Zone and do readings based on them. I mean it covers almost all of human psychology! Maybe this year I just should go for it…
January 1, 2026 at 5:36 PM
Every NYE there is a Twilight Zone marathon on TV and I think I’m going to propose a course at Rutgers where we just watch episodes of the Twilight Zone and do readings based on them. I mean it covers almost all of human psychology! Maybe this year I just should go for it…
Me playing a Christmas carol (an arrangement of In Dulci Jubilo) on the Rockefeller carillon at the University of Chicago. At 105 tons, it is the largest musical instrument ever built. Have a happy holiday!
December 25, 2025 at 2:11 PM
Me playing a Christmas carol (an arrangement of In Dulci Jubilo) on the Rockefeller carillon at the University of Chicago. At 105 tons, it is the largest musical instrument ever built. Have a happy holiday!
Christmas Eve Feast of seven fishes here in Philly. It’s an Italian American thing with origins in southern Italy. We substitutes sushi for bacala because no one in my family likes salted cod! But we had salmon, flounder, crab, clam, scallop, and shrimp.
December 25, 2025 at 2:07 PM
Christmas Eve Feast of seven fishes here in Philly. It’s an Italian American thing with origins in southern Italy. We substitutes sushi for bacala because no one in my family likes salted cod! But we had salmon, flounder, crab, clam, scallop, and shrimp.
I often have to post this: I’m the professor Sean Duffy not the MTV guy!
November 30, 2025 at 2:17 AM
I often have to post this: I’m the professor Sean Duffy not the MTV guy!
City Hall in Philly has a carousel you can see in the center of the courtyard
November 30, 2025 at 1:33 AM
City Hall in Philly has a carousel you can see in the center of the courtyard
Philadelphia today - still beautiful late in autumn in Rittenhouse square. The last image is of the Comcast center - its architect Robert AM Stern died earlier this week
November 30, 2025 at 1:31 AM
Philadelphia today - still beautiful late in autumn in Rittenhouse square. The last image is of the Comcast center - its architect Robert AM Stern died earlier this week
There is beauty everywhere but especially in autumn in Philadelphia! 😻
November 24, 2025 at 5:32 PM
There is beauty everywhere but especially in autumn in Philadelphia! 😻
Philly from Camden including then Franklin Bridge, PATCO, and Rutgers Camden! 😻
November 6, 2025 at 9:45 PM
Philly from Camden including then Franklin Bridge, PATCO, and Rutgers Camden! 😻
You can tell who got their PhD in Developmental Psychology.
October 29, 2025 at 3:12 PM
You can tell who got their PhD in Developmental Psychology.
Analyzing data at my lab’s annex research field station.
October 26, 2025 at 6:22 PM
Analyzing data at my lab’s annex research field station.
Today we celebrated my grandmother’s 98th trip around the sun! My sister of course can’t resist photobombing in every photograph! 😹
October 26, 2025 at 12:38 AM
Today we celebrated my grandmother’s 98th trip around the sun! My sister of course can’t resist photobombing in every photograph! 😹
Rittenhouse Square, Philadelphia.
October 24, 2025 at 10:31 PM
Rittenhouse Square, Philadelphia.
I took a few pictures of the newest train station in Philadelphia!
October 24, 2025 at 10:29 PM
I took a few pictures of the newest train station in Philadelphia!
Philly today from the Camden waterfront!
October 24, 2025 at 10:28 PM
Philly today from the Camden waterfront!
Well when you hire these guys as your staff - they were likely asleep at the switch!
October 20, 2025 at 8:52 AM
Well when you hire these guys as your staff - they were likely asleep at the switch!