Ethan McCormick
Asst Prof. in Methods & Stats. Study longitudinal quantitative methods, learning, development, neural networks. 🏳️🌈
- Reposted by Ethan McCormick[This post could not be retrieved]
- New paper+package combination for linear estimation with nonlinear inference (LENI) - methods to obtain the results of a nonlinear model without the hassle of nonlinear estimation. Presented this at Flux this fall and really excited to see it out! osf.io/preprints/ps... github.com/E-M-McCormic...
- General approach is to define a set of transformations for a linear function to a corresponding set of nonlinear parameters that more closely match developmental features of interest. For instance, the timing of developmental transitions or the height of a quadratic peak. See a cubic example below.
- Which let's you do all sorts of cool things, like test whether boys really are developmentally delayed compared with girls. Or using a multiphase version, to model puberty or cortical thinning.
- I also lay out an approach for estimating any nonlinear function as a linearized SEM through the use of Taylor series expansions. And so you don't have to do the math, I did it for you! With automatic {lavaan} syntax generation using the {leni} package function leni_sem().
- Reposted by Ethan McCormickPhD vacancy to work with my better half at Leiden University (note - Dutch required because of testing) www.universiteitleiden.nl/vacatures/20...
- What a wonderful thing to come back from vacation to read! First publication at Psych Methods - feeling really proud of this one.
- Reviewers can’t critique my paper if they can’t stand to look at it. Thanks to @rogierk.bsky.social for the “inspiration”?
- Reposted by Ethan McCormickI’m accepting a grad student to work in my lab on LGBTQ health and development research! Very excited to see the Queer Development Lab grow 🌈 Interested applicants can attend our virtual Open House on November 7 @ 6:30pmET.
