Juli Nagel
@juli-nagel.bsky.social
PhD student (psychology, neurobiology) researching reward, memory and sleep. Way too passionate about R. Otherwise interested in gaming, western riding and climbing. Mum.
Probably a nightmare for non-natives! I also don't like it and would really prefer "du"/first name basis, and I also believe there is a bit of a generational shift, with younger people being less formal overall.
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November 19, 2025 at 12:34 PM
Probably a nightmare for non-natives! I also don't like it and would really prefer "du"/first name basis, and I also believe there is a bit of a generational shift, with younger people being less formal overall.
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is extremely important. The default is to address a new (adult) person with "Sie" instead of "du" (verbs also change then). We already learn that as toddlers (my parents were very anxious about it). Many countries don't have that, or if they do, they don't really use it ("usted" in Spanish).
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November 19, 2025 at 12:34 PM
is extremely important. The default is to address a new (adult) person with "Sie" instead of "du" (verbs also change then). We already learn that as toddlers (my parents were very anxious about it). Many countries don't have that, or if they do, they don't really use it ("usted" in Spanish).
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to any student). It was impossible to generalize consistent rules from these experiences :-D
Generally speaking, though, Germans are extremely formal by default, and most profs will expect to be addressed this way. We're also one of the few countries where the "Höflichkeitsform" ("polite form")
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Generally speaking, though, Germans are extremely formal by default, and most profs will expect to be addressed this way. We're also one of the few countries where the "Höflichkeitsform" ("polite form")
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November 19, 2025 at 12:34 PM
to any student). It was impossible to generalize consistent rules from these experiences :-D
Generally speaking, though, Germans are extremely formal by default, and most profs will expect to be addressed this way. We're also one of the few countries where the "Höflichkeitsform" ("polite form")
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Generally speaking, though, Germans are extremely formal by default, and most profs will expect to be addressed this way. We're also one of the few countries where the "Höflichkeitsform" ("polite form")
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At my uni (Germany, psychology), many profs had a slide in their introductory lecture informing students how to they wanted to be addressed. It ranged from "make sure to include all my titles" to "PLEASE DON'T call me Professor - Mr ... is fine!" (he was also very quick to offer first name basis
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November 19, 2025 at 12:34 PM
At my uni (Germany, psychology), many profs had a slide in their introductory lecture informing students how to they wanted to be addressed. It ranged from "make sure to include all my titles" to "PLEASE DON'T call me Professor - Mr ... is fine!" (he was also very quick to offer first name basis
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to describing a general phenomenon. I.e.: "This is how I researched the effect of reward on memory in my study" rather than "reward improves memory". You definitely see more of the latter type on stage, though. Really a matter of taste!
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November 5, 2025 at 7:03 PM
to describing a general phenomenon. I.e.: "This is how I researched the effect of reward on memory in my study" rather than "reward improves memory". You definitely see more of the latter type on stage, though. Really a matter of taste!
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Depends on the audience a lot - I once participated in two back-to-back science slams. Same location, same slammers, different audience. The "ranking" was totally different! (N = 2 runs, but ... :-D)
I PERSONALLY prefer the science slams that talk about your acutual scientific work, as opposed
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I PERSONALLY prefer the science slams that talk about your acutual scientific work, as opposed
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November 5, 2025 at 7:03 PM
Depends on the audience a lot - I once participated in two back-to-back science slams. Same location, same slammers, different audience. The "ranking" was totally different! (N = 2 runs, but ... :-D)
I PERSONALLY prefer the science slams that talk about your acutual scientific work, as opposed
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I PERSONALLY prefer the science slams that talk about your acutual scientific work, as opposed
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Okay, sooo ... if I have two good sides, the best strategy would be to only offer one of them (the "everyday veins"), and save the other for emergencies (the "pristine veins")? Or should I try to randomize across sides so they are equally "used"?
Hypothetically.
Hypothetically.
October 16, 2025 at 6:44 PM
Okay, sooo ... if I have two good sides, the best strategy would be to only offer one of them (the "everyday veins"), and save the other for emergencies (the "pristine veins")? Or should I try to randomize across sides so they are equally "used"?
Hypothetically.
Hypothetically.
LinkedIn is a close competitor, I'd say.
October 13, 2025 at 7:45 AM
LinkedIn is a close competitor, I'd say.
Caveat: tabulate() only works for single vectors, so you can't replace sth like table(1:4, c("a", "a", "b", "b")).
Bonus points: You easily get 0 counts if you expect numbers from 1:nbins, i.e.:
> tabulate(c(3, 1, 3, 3, 3), nbins = 4)
[1] 1 0 4 0
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Bonus points: You easily get 0 counts if you expect numbers from 1:nbins, i.e.:
> tabulate(c(3, 1, 3, 3, 3), nbins = 4)
[1] 1 0 4 0
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October 1, 2025 at 1:23 PM
Caveat: tabulate() only works for single vectors, so you can't replace sth like table(1:4, c("a", "a", "b", "b")).
Bonus points: You easily get 0 counts if you expect numbers from 1:nbins, i.e.:
> tabulate(c(3, 1, 3, 3, 3), nbins = 4)
[1] 1 0 4 0
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Bonus points: You easily get 0 counts if you expect numbers from 1:nbins, i.e.:
> tabulate(c(3, 1, 3, 3, 3), nbins = 4)
[1] 1 0 4 0
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This is extremely exciting!
(But also with the release party being on October 3rd, a missed opportunity to use a "The Life of a Showgirl" reference.)
(But also with the release party being on October 3rd, a missed opportunity to use a "The Life of a Showgirl" reference.)
September 30, 2025 at 6:47 PM
This is extremely exciting!
(But also with the release party being on October 3rd, a missed opportunity to use a "The Life of a Showgirl" reference.)
(But also with the release party being on October 3rd, a missed opportunity to use a "The Life of a Showgirl" reference.)
Is this ... a very early preregistration?
September 29, 2025 at 4:56 PM
Is this ... a very early preregistration?
I also learned a fair deal of Spanish in school (read Don Quijote and all), but couldn't even do small talk nowadays. That happens, and it's normal (albeit sad). I fell into the "What?! But EVERYBODY should know THIS!" trap in the past, but learned that it's a very unhelpful trap to fall into.
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September 29, 2025 at 4:35 PM
I also learned a fair deal of Spanish in school (read Don Quijote and all), but couldn't even do small talk nowadays. That happens, and it's normal (albeit sad). I fell into the "What?! But EVERYBODY should know THIS!" trap in the past, but learned that it's a very unhelpful trap to fall into.
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Sure, I've learned this in school. I'm a nerdy nerd with degrees in psychology, working as a scientist, well-trained in statistics (not so much physics). When I see these videos, all I remember is that it's not surprising that this happens, but I wouldn't be able to explain it properly.
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September 29, 2025 at 4:35 PM
Sure, I've learned this in school. I'm a nerdy nerd with degrees in psychology, working as a scientist, well-trained in statistics (not so much physics). When I see these videos, all I remember is that it's not surprising that this happens, but I wouldn't be able to explain it properly.
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To be fair, I've had occasional situations like these with students BEFORE the rise of LLMs ...
September 29, 2025 at 4:25 PM
To be fair, I've had occasional situations like these with students BEFORE the rise of LLMs ...
Line 1: warning("Hey, thought about restarting R before running this script? Btw, you might wanna set up a clean project for this, cause, you know, if you still use setwd(), Jenny Bryan will personally set your computer on fire. And do you know about dependency management? Sorry if you already do!")
September 26, 2025 at 8:36 AM
Line 1: warning("Hey, thought about restarting R before running this script? Btw, you might wanna set up a clean project for this, cause, you know, if you still use setwd(), Jenny Bryan will personally set your computer on fire. And do you know about dependency management? Sorry if you already do!")
Don't know why the zebra paper won, though? It's been tested in horses before (Caro et al.); the horse community has been using blankets with zebra stripes for years. Sure, we desparetly need more replications, but why the Ig Nobel prize for a conceptual replication?
www.science.org/content/arti...
www.science.org/content/arti...
Zebra stripes confuse biting flies, causing them to abort their landings
Coat pattern helps zebras and horses evade dangerous insects
www.science.org
September 19, 2025 at 12:43 PM
Don't know why the zebra paper won, though? It's been tested in horses before (Caro et al.); the horse community has been using blankets with zebra stripes for years. Sure, we desparetly need more replications, but why the Ig Nobel prize for a conceptual replication?
www.science.org/content/arti...
www.science.org/content/arti...
Had the opposite experience lately. Daycare warned me: "In case tells any stories about today ... don't be confused ... he was very excited about the document shredder."
Unfortunately, he DIDN'T mention it, so I will never know why they were so worried what weird things he might say.
Unfortunately, he DIDN'T mention it, so I will never know why they were so worried what weird things he might say.
August 29, 2025 at 12:50 PM
Had the opposite experience lately. Daycare warned me: "In case tells any stories about today ... don't be confused ... he was very excited about the document shredder."
Unfortunately, he DIDN'T mention it, so I will never know why they were so worried what weird things he might say.
Unfortunately, he DIDN'T mention it, so I will never know why they were so worried what weird things he might say.
Wooooooow, where is this?! 😱
August 25, 2025 at 7:40 AM
Wooooooow, where is this?! 😱
"So I leap from the gallows and I levitate down your street
Crash the party like a record scratch as I scream
'Who's afraid of little old me?'
You should be"
Crash the party like a record scratch as I scream
'Who's afraid of little old me?'
You should be"
August 20, 2025 at 6:08 PM
"So I leap from the gallows and I levitate down your street
Crash the party like a record scratch as I scream
'Who's afraid of little old me?'
You should be"
Crash the party like a record scratch as I scream
'Who's afraid of little old me?'
You should be"
(Disclaimer: Of course, results will vary if the data are not balanced, or are funky in any other way, but in this simple case, mixed model/t-test estimates and p-values will be identical.)
August 20, 2025 at 10:16 AM
(Disclaimer: Of course, results will vary if the data are not balanced, or are funky in any other way, but in this simple case, mixed model/t-test estimates and p-values will be identical.)
t_test <- t.test(t1, t2, paired = TRUE)
mm <- lmer(value ~ time + (1 | id), data = data)
mm_summary <- summary(mm)
# estimates
abs(mm_summary$coefficients["timet2", "Estimate"])
abs(t_test$estimate)
# pval
mm_summary$coefficients["timet2", "Pr(>|t|)"]
t_test$p.value
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mm <- lmer(value ~ time + (1 | id), data = data)
mm_summary <- summary(mm)
# estimates
abs(mm_summary$coefficients["timet2", "Estimate"])
abs(t_test$estimate)
# pval
mm_summary$coefficients["timet2", "Pr(>|t|)"]
t_test$p.value
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August 20, 2025 at 10:16 AM
t_test <- t.test(t1, t2, paired = TRUE)
mm <- lmer(value ~ time + (1 | id), data = data)
mm_summary <- summary(mm)
# estimates
abs(mm_summary$coefficients["timet2", "Estimate"])
abs(t_test$estimate)
# pval
mm_summary$coefficients["timet2", "Pr(>|t|)"]
t_test$p.value
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mm <- lmer(value ~ time + (1 | id), data = data)
mm_summary <- summary(mm)
# estimates
abs(mm_summary$coefficients["timet2", "Estimate"])
abs(t_test$estimate)
# pval
mm_summary$coefficients["timet2", "Pr(>|t|)"]
t_test$p.value
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And here's a paired t-test versus a mixed model with a random intercept in R:
library(lmerTest)
n <- 1000
t1 <- rnorm(n)
t2 <- t1 + rnorm(n)
data <-
data.frame(
id = paste0("ID-", 1:n),
t1 = t1,
t2 = t2
)
data <-
data %>%
pivot_longer(c(t1, t2), names_to = "time")
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library(lmerTest)
n <- 1000
t1 <- rnorm(n)
t2 <- t1 + rnorm(n)
data <-
data.frame(
id = paste0("ID-", 1:n),
t1 = t1,
t2 = t2
)
data <-
data %>%
pivot_longer(c(t1, t2), names_to = "time")
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August 20, 2025 at 10:16 AM
And here's a paired t-test versus a mixed model with a random intercept in R:
library(lmerTest)
n <- 1000
t1 <- rnorm(n)
t2 <- t1 + rnorm(n)
data <-
data.frame(
id = paste0("ID-", 1:n),
t1 = t1,
t2 = t2
)
data <-
data %>%
pivot_longer(c(t1, t2), names_to = "time")
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library(lmerTest)
n <- 1000
t1 <- rnorm(n)
t2 <- t1 + rnorm(n)
data <-
data.frame(
id = paste0("ID-", 1:n),
t1 = t1,
t2 = t2
)
data <-
data %>%
pivot_longer(c(t1, t2), names_to = "time")
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