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Material	Authors	Abstract
Uninsured Idiosyncratic Risk and Aggregate Saving REMARK Notebook	Huang Sun	Aiyagari (1994) Replication
Alternative Combos Of Parameter Values DemARK Demonstration Assignment Notebook	Carroll	Alternative Combinations of Parameter Values of the cstwMPC model
Solving heterogeneous agent models in discrete time with many idiosyncratic states by perturbation methods REMARK Reproduction	Lee Park	Code that solves models from the paper of Bayer and Luetikke, "Solving heterogeneous agent models in discrete time with many idiosyncratic states by perturbation methods".
Public Debt and Low Interest Rates REMARK Replication	Acalin	This notebook fully replicates the analysis of the stochastic overlapping generations (OLG) model developed by Blanchard in his presidential address during the AEA meetings 2019.
Buffer-Stock Saving and the Life Cycle/Permanent Income Hypothesis REMARK Notebook	Carroll Yusuf Son	This is a replication of Carroll (1997), Buffer-Stock Saving and the Life Cycle/Permanent Income Hypothesis.
Theoretical Foundations of Buffer Stock Saving: Problems REMARK	Carroll	This adds some PhD student problems to the BufferStockTheory repo
BufferStockTheory REMARK Reproduction	Carroll	This paper builds foundations for rigorous and intuitive understanding of 'buffer stock' saving models (Bewley (1977)-like models with a wealth target), pairing each theoretical result with quantitative illustrations. After describing...
REMARK: Consumption and Portfolio Choice Over the Life Cycle REMARK	Velásquez-Giraldo Zahn	This REMARK is an attempt to reproduce the main results of Cocco, Gomes, & Maenhout (2005), 'Consumption and Portfolio Choice Over the Life Cycle' (https://academic.oup.com/rfs/article-abstract/18/2/491/1599892)
Change Liq Constr DemARK Demonstration Notebook	Carroll	What Happens To the Consumption Function When A Liquidity Constraint is Tightened?
Chinese Growth DemARK Demonstration Notebook	Carroll	Do Precautionary Motives Explain China's High Saving Rate?
ConsAggShockModel Example Demonstration Documentation Notebook Teaching	Carroll	ConsAggShockModel Documentation
ConsGenIncProcessModel Example Demonstration Documentation Notebook Teaching	Carroll	ConsGenIncProcessModel Documentation
ConsIndShock Example Demonstration Documentation Notebook Teaching	Carroll	ConsIndShock Documentation
ConsLaborModel Example Demonstration Documentation Notebook Teaching	Carroll	ConsLaborModel Documentation
ConsMarkovModel Example Demonstration Documentation Notebook Teaching	Carroll	ConsMarkovModel Documentation
ConsMedModel Example Demonstration Documentation Notebook Teaching	Carroll	ConsMedModel Documentation
ConsPortfolioModel Example Demonstration Documentation Notebook Teaching	Carroll	ConsPortfolioModel Documentation
ConsPrefShockModel Example Demonstration Documentation Notebook Teaching	Carroll	ConsPrefShockModel Documentation
ConsRepAgentModel Example Demonstration Documentation Notebook Teaching	Carroll	ConsRepAgentModel Documentation
ConsRiskyContribModel Example Demonstration Documentation Notebook Teaching	Carroll	ConsRiskyContribModel Documentation
ConsSequentialPortfolioModel Example Demonstration Documentation Notebook Teaching	Carroll	ConsSequentialPortfolioModel Documentation
DCEGM-Upper-Envelope DemARK Demonstration Notebook	Carroll Velásquez-Giraldo	DCEGM Upper Envelope
DiamondOLG DemARK Demonstration Notebook	Carroll	The Diamond OLG Model
The distribution of wealth and the marginal propensity to consume REMARK Replication	Carroll Slacalek Kiichi White
A Guide on Solving Non-convex Consumption-Saving Models REMARK Notebook	Monninger	This REMARK replicates Druedahl, J. (2021). A guide on solving non-convex consumption-saving models.
Endogenous Retirement: A Canonical Discrete-Continuous Problem REMARK Reproduction	Carroll	Endogenous Retirement - A Canonical Discrete-Continuous Problem. This REMARK demonstrates a solution to the difficult problem of solving for the optimal retirement date given that consumption and asset choices are...
Epidemiological Expectations in Economics REMARK	Carroll Wang	‘Epidemiological’ models of belief formation put social interactions at their core; such models are the main (almost, the only) tool used by non-economists to study the dynamics of beliefs in...
FisherTwoPeriod DemARK Demonstration Teaching Notebook	Carroll	The Fisher Two-Period Optimal Consumption Problem
Consumer Spending during Unemployment: Positive and Normative Implications REMARK Replication	Ganong Noel	Analysis of Models for "Consumer Spending During Unemployment- Positive and Normative Implications"
Gentle-Intro-To-HARK-Buffer-Stock-Model DemARK Demonstration Tutorial Teaching Notebook	Carroll	A Gentle Introduction to Buffer Stock Saving
Gentle-Intro-To-HARK-PerfForesightCRRA DemARK Demonstration Tutorial Notebook	Carroll	A Gentle Introduction to HARK In Perfect Foresight
Gentle-Intro-To-HARK DemARK Demonstration Tutorial Teaching Notebook Example	Carroll	A Gentle Introduction to HARK for Economists
Harmenberg-Aggregation DemARK Demonstration Tutorial Teaching Notebook	Carroll Velásquez-Giraldo	Demonstrates that the Harmenberg method speeds up calculations by as much as a factor of 100.
IncExpectationExample DemARK Demonstration Notebook Example	Carroll	The Persistent Shock Model and Income Expectations
IndShockConsumerType Example Demonstration Documentation Notebook Teaching	Carroll	IndShockConsumerType Documentation
KeynesFriedmanModigliani DemARK Demonstration Teaching Notebook	Carroll	Introduction: Keynes, Friedman, Modigliani
KinkedRconsumerType Example Demonstration Documentation Notebook Teaching	Carroll	KinkedRconsumerType Documentation
Income and Wealth Heterogeneity in the Macroeconomy REMARK Notebook	Carroll	Income and wealth heterogeneity in the macroeconomy
LC-Model-Expected-Vs-Realized-Income-Growth DemARK Demonstration Notebook	Carroll	This notebook examines the relationship between expected and actual income growth in a model with transitory and permanent shocks
LifeCycleModelTheoryVsData DemARK Demonstration Notebook	Carroll	The Life Cycle Model: Theory vs Data
Liquidity Constraints and Precautionary Saving REMARK Reproduction	Carroll Kimball Holm	We provide the analytical explanation of strong interactions between precautionary sav- ing and liquidity constraints that are regularly observed in numerical solutions to consump- tion/saving models. The effects of constraints...
Lucas-Asset-Pricing-Model DemARK Demonstration Teaching Notebook	Carroll Velásquez-Giraldo	A demonstration of the Lucas Asset-Pricing model
Lucas-Asset-Pricing-Model DemARK Demonstration Teaching Notebook	Carroll Velásquez-Giraldo	A demonstration of the Lucas Asset-Pricing model
MPC-Out-of-Credit-vs-MPC-Out-of-Income DemARK Demonstration Notebook	Carroll	The MPC out of Credit vs the MPC Out of Income
Micro-and-Macro-Implications-of-Very-Impatient-HHs QuARK Demonstration Notebook Teaching	Carroll	Micro- and Macroeconomic Implications of Very Impatient Households
Micro-and-Macro-Implications-of-Very-Impatient-HHs DemARK Demonstration Notebook Teaching	Carroll	Micro- and Macroeconomic Implications of Very Impatient Households
Nondurables-During-Great-Recession DemARK Demonstration Notebook	Carroll	Spending on Nondurables During the Great Recession
Modeling the Consumption Response to the CARES Act REMARK Notebook	Carroll Crawley Slacalek White	To predict the eﬀects of the 2020 U.S. CARES Act on consumption, we extend a model that matches responses of households to past consumption stimulus packages. The extension allows us...
PerfForesightCRRA-Approximation DemARK Demonstration Teaching Notebook	Carroll	Perfect Foresight CRRA Model - Approximation
PerfForesightCRRA-SavingRate DemARK Demonstration Teaching Notebook	Carroll	Perfect Foresight CRRA Model - Savings Rate
PerfForesightConsumerType Example Demonstration Documentation Notebook Teaching	Carroll	PerfForesightConsumerType Documentation
Optimal Financial Investment over the Life Cycle - Blog Post REMARK Replication Notebook Blog	Carroll	A blog post (https://econ-ark.github.io/PortfolioChoiceBlogPost/PortfolioChoiceBlogPost.html) showcasing use of HARK to the portfolio choice allocation problem.
A Two-Asset Savings Model with an Income-Contribution Scheme REMARK	Velásquez-Giraldo	This paper develops a two-asset consumption-savings model and serves as the documentation of an open-source implementation of methods to solve and simulate it in the HARK toolkit. The model represents...
Solution Methods for Microeconomic Dynamic Stochastic Optimization Problems REMARK Replication Teaching Tutorial	Carroll Wang	These notes describe tools for solving microeconomic dynamic stochastic optimization problems, and show how to use those tools for efficiently estimating a standard life cycle consumption/saving model using microeconomic data....
Structural-Estimates-From-Empirical-MPCs-Fagereng-et-al DemARK Demonstration Notebook	Carroll White	Making Structural Estimates From Empirical Results
TractableBufferStock-Interactive DemARK Demonstration Teaching Notebook	Carroll	The Tractable Buffer Stock Model
TractableBufferStockModel Example Demonstration Documentation Notebook Teaching	Carroll	TractableBufferStockModel Documentation
Sticky Expectations and Consumption Dynamics REMARK Reproduction	Carroll Crawley Slacalek Kiichi White	Sticky Expectations and Consumption Dynamics.
Chinese Growth DemARK Demonstration Notebook	Carroll	Do Precautionary Motives Explain China's High Saving Rate?
cstwMPC-RHetero REMARK Replication
DistributionOfWealthMPC REMARK Replication	Carroll Slacalek Kiichi White	Replication codes for Carroll, C., Slacalek, J., Tokuoka, K., & White, M. N. (2017). The distribution of wealth and the marginal propensity to consume. Quantitative Economics, 8(3), 977-1020.
A Tractable Model of Buffer Stock Saving REMARK Replication	Carroll	Analytically tractable model of the effects of nonfinancial risk on intertemporal choice
My Research Tool REMARK Notebook	Holmes	Replication of Paper X