Publications by Gabriel Reyes
Replication of Study Poverty Impedes Cognitive Function by Mani et al. (2013, Science)
Introduction Justification for choice of study For this project, I will be replicating Mani et al.’s 2013 Science paper that looked at how economic scarcity affected cognitive function in adults. I chose to replicate this paper because I am interested in researching how poverty-related stressors affect brain development and learning. The resul...
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EDUC 252L - Problem Set #1
Question #1: Exploration of collections of Bernoulli random variables ################################################# ##Exploration of collections of bernoulli variables ################################################# set.seed(12311) x1<-matrix(rbinom(1000,1,.5),100,10) Let’s pretend that x1 is item response data from a test. So 1s and 0s ...
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SES Measurement Project
INTRODUCTION The purpose of this project was to examine how differences in measuring socioeconomic status (SES) affect outcomes. While a variety of ways exist to measure poverty, there are two common approaches. The first is by using reported income as a continuous variable to see if higher levels of income result in differences in behavioral out...
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EDUC 252L - Problem Set #2
CTT Failures Question 1 Use the ctt_failures source on github to explore what I think is a crucial failure of CTT. Note: This problem is challenging. But, if you stick with it I think you can really get some great insight about why the CTT model is, in some sense, incomplete about what we expect from item responses. ##a helper function we'll use...
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SES Measurement Project
INTRODUCTION [here i will add an intro to what I am doing] METHODS ### load any necessary libraries library(haven) library(tidyverse) ## ── Attaching packages ─────────────────────────────────────── tidyverse 1.3.1 ── ## ✓ ggplot2 3.3.3 ✓ purrr 0.3.4 ...
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Problem Set #3
Shortish Answer Question 1 Suppose that we have a test scaled with the Rasch model whose first 3 items have known difficulties -1, 0, and 1.5. An examinee with ability theta got the first item right, the second item right, and the third item wrong. Can you write the likelihood of observing this sequence of item responses as a function of theta? ...
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EDUC 252L - Problem Set #4
This problem set was worked in collaboration with Hansol Lee and Iris Zhong Question #1 Using code provided by Ben D. read.table(file="https://raw.githubusercontent.com/ben-domingue/252L/master/data/emp-3pl-math-reading.txt",header=TRUE)->x dim(x) x[rowSums(is.na(x))==0,]->x dim(x) grep("r.mc",names(x))->r_index # tweaked this to know which is ...
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Replication of Study Poverty Impedes Cognitive Function by Mani et al. (2013, Science)
Introduction Justification for choice of study For this project, I will be replicating Mani et al.’s 2013 Science paper that looked at how economic scarcity affected cognitive function in adults. I chose to replicate this paper because I am interested in researching how poverty-related stressors affect brain development and learning. The resul...
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