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Posts by Brendan Barrett

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I want this 3 sided die.

5 days ago 2 0 0 0

To whom it may concern: I will be presenting at @bioanth.org in Denver and @culturalevolsoc.bsky.social annual meeting in Rabat so if you would like to meet up reach out

1 month ago 2 0 0 0
3 Year Postdoctoral Fellowships in Animal Behavior

3-year Independent Post-doc in Animal Behavior based at the Smithsonian Tropical Research Institute in Panama!

Three positions, each including salary & a research budget.

Applications due April, 15th.

DM if you are interesting in developing a project with us!

stri.si.edu/academic-pro...

1 month ago 38 83 1 4
Professorship in population genetics in the field of evolutionary anthropology and medicine (W2) Faculties & Facilities

Leipzig U and the MPI for Evolutionary Anthropology (MPI-EVA) have an open faculty position (W2) in evolutionary population genetics! This position is tenured and comes with generous core funding. We are eager to welcome a new colleague! Deadline March 11.
www.uni-leipzig.de/en/newsdetai...

1 month ago 60 98 0 0
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prior choice is the only thing that soothes my weary soul.

1 month ago 3 0 0 0

on that note, see: bsky.app/profile/oliv...

3 months ago 11 3 0 0

stay tuned in 2026 for some comparative multi-species work and unnecessary matrix algebra where we quantify and fit cognitive models of material selectivity. also more primate archaeology.

3 months ago 2 0 0 0
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and Coiba

3 months ago 0 0 1 0
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In terms of mean dimensions and comparing the posterior popuation distributions from which raw materials and tool were drawn we see differences across most linear dimensions on Jicaron

3 months ago 0 0 1 0
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We looked at four commonly processed resources-- two nuts, hermit crabs, and a freshwater snail

3 months ago 0 0 1 0
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White-faced capuchins (Cebus capucinus imitator) exhibit selectivity for stone tools Over the last few decades, the developing field of primate archaeology has used archaeological methods to reconstruct primate behaviors, especially tool use. We expand the possibilities of primate arc...

Last preprint of the year from our group led by Meredith Carlson of UC Davis, showing white-faced capuchins exhibit material selectivity of hammerstone mass according to material properties www.biorxiv.org/content/10.6...

3 months ago 6 2 1 0

in collaboration with @ctennie.bsky.social and others @mpi-animalbehav.bsky.social [i think the 3 of us are the only ones on bluesky...]

4 months ago 1 0 0 0

now out, post peer review, led by @ehowaspi.bsky.social: empirically informed ABM suggesting that in orangutans dietary"know-what" requires social learning to develop

4 months ago 15 2 1 0
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🥳64 more days until the start of #Animove at #LaSelva Organization of Tropical Studies in #CostaRica. 22 participants, 6 tutors,2077 plant species,125 mammal species,470 bird species,48 amphibian species,87 reptile species,45 fresh water fish species and 10000 insects, arachnids and other.🐒🦇🦜🐊🦂

6 months ago 12 5 1 0
Each dyad (a, b) moves through four discrete states over time, represented by coloured circles. The dyad remains in a given state for a certain duration, or "holding time", before transitioning to a new state according to state-specific transition probabilities, indicated by arrows showing all possible (non-zero) transitions. Paintings by Sofia M. Pereira & Judith von Nordheim.

Each dyad (a, b) moves through four discrete states over time, represented by coloured circles. The dyad remains in a given state for a certain duration, or "holding time", before transitioning to a new state according to state-specific transition probabilities, indicated by arrows showing all possible (non-zero) transitions. Paintings by Sofia M. Pereira & Judith von Nordheim.

New paper!

We propose a framework to empirically study animal social relationships by modelling social network (SN) data as time-series—that is, without the need to aggregate them over time.

www.biorxiv.org/content/10.1...

5 months ago 92 37 1 2

i think one of the biggest values of the course is that this is the only philosophy of science that students get, and the impact of that is less measurable and for which no shortcut exists

5 months ago 2 0 0 0

but the hope is that there is always a motivated few students who get into it and run with it, and their colleagues ask them for help when they hit a barrier

5 months ago 0 0 1 0
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my concern is that a european phd model isnt well suited towards devoting the effort/time for analysis that is required to do good science--- especially for folks who travel for field research--- and whose advisors either don't care or don't know about the requisite work and just want an answer

5 months ago 2 0 1 0

i have been thinking about (and asked to) do a PhD level workshop on Bayesian stats and have thought about doing 2 weeks of 4 hour sessions per day, so 40 hours in total.

5 months ago 0 0 1 0

it seems that every variation is suboptimal for some party, but there are always a few who get really engaged

5 months ago 0 0 1 0

I taught it at 1/2 speed up til hierarchical models for MS students, and that seemed to work fine. When I did normal speed for PhD students they couldn't all keep up and had too many fieldwork/life obligations to do it over a long period. I have been getting requests for an intensive Bayesian kurs

5 months ago 3 0 1 0

this was a collaborative effort arising out of multiple conversations and experiences so authorship is in alphabetical order--- don't give me too much credit

5 months ago 2 1 0 0

with coauthors @kamransafi.bsky.social @safilab.bsky.social @francescafrisoni.bsky.social @zoegoldsborough.bsky.social @animaltracking.bsky.social @livingingroups.bsky.social

5 months ago 0 0 1 0
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Burden of a failed error culture in biologging Driven by technological advancement and low cost, biologging has rapidly transformed the study of animal behaviour and ecology, providing unprecedente…

For your consideration, our paper about how we can build a better error culture around biologging is now out in Animal Behavio(u)r. A collaborative effort between researchers the veterinarians at @mpi-animalbehav.bsky.social

www.sciencedirect.com/science/arti...

5 months ago 17 12 1 1

@culturalevolsoc.bsky.social

5 months ago 0 1 0 0

Postdoc position in individual-level incentives, social
learning, and payoff-biased imitation shape group-level accuracy in complex prediction and decision-making tasks in Konstanz

files.newsletter2go.com/l3slzozn/s_i...

5 months ago 35 37 1 1
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Global body adopts policy to protect Earth’s old, wise and large animals | Charles Darwin University The International Union for Conservation of Nature (IUCN) has recognised Charles Darwin University-led research into the Earth’s oldest animals with the adoption of the ‘Longevity Conservation’ global...

the IUCN have passed the Longevity Conservation motion put forward to them by @kellerfish.bsky.social and @pili-scotland.bsky.social and based on the paper we wrote on the value of older individuals in animal societies.
www.cdu.edu.au/news/global-...

5 months ago 56 27 1 2
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thanks! in case you are curious rock density covaries across space.

5 months ago 1 0 0 0

tl;dr

    Collinearity is a form of lack of information that is appropriately reflected in the output of your statistical model.
    When collinearity is associated with interpretational difficulties, these difficulties aren’t caused by the collinearity itself. Rather, they reveal that the model was poorly specified (in that it answers a question different to the one of interest), that the analyst overly focuses on significance rather than estimates and the uncertainty about them or that the analyst took a mental shortcut in interpreting the model that could’ve also led them astray in the absence of collinearity.
    If you do decide to “deal with” collinearity, make sure you can still answer the question of interest.

tl;dr Collinearity is a form of lack of information that is appropriately reflected in the output of your statistical model. When collinearity is associated with interpretational difficulties, these difficulties aren’t caused by the collinearity itself. Rather, they reveal that the model was poorly specified (in that it answers a question different to the one of interest), that the analyst overly focuses on significance rather than estimates and the uncertainty about them or that the analyst took a mental shortcut in interpreting the model that could’ve also led them astray in the absence of collinearity. If you do decide to “deal with” collinearity, make sure you can still answer the question of interest.

Was asked about collinearity again, so here's Vahove's 2019 post on why it isn't a problem that needs a solution. Design the model(s) to answer a formal question and free your mind janhove.github.io/posts/2019-0...

6 months ago 114 36 3 4

Do any stats nerds have a good reference/examples for how to write about Gaussian Processes models and communicate them to readers? I am estimating spatial autocorrelation of things measured in grids and need some inspiration to guide my writing.

6 months ago 2 2 1 0