02/05/2015. This file describes how to replicate the results of the paper "Kinked Demand Curves, the Natural Rate Hypothesis, and Macroeconomic Stability." 

Figures 1, 2, and 6 and the information in Table 2 can be replicated in Mathematica by running the file 'Figures 1,2,6 and Table 2.nb'.

Figures 3, 4, 5, and 7 can be replicated in Matlab. To replicate figure 3, the user opens the file 'findboundary.m' located in the folder Figures 3,4,5,7 > Figure 3. The calibration is set to replicate the top left panel of the figure; to replicate each of the other panels the calibration must be adjusted (lines 10-25). Running the program generates the output named D1, D2, D3 and D4, which contain boundaries on the coefficients in the policy feedback rule between regions of determinacy, indeterminacy, and nonexistence. The results for each panel have been saved in the data files 'results_.mat'. Running the file 'createfigure.m' uses the data files to create Figure 3.
 Figures 4, 5, and 7 can be reproduced by opening the subfolder Figure 4, Figure 5, or Figure 7, respectively, and running the files 'findboundary.m' and 'createfigure.m' in this subfolder.

To replicate Panel A of Table 3 the user runs the matlab file 'Table_3.m' in the folder Table 3. To replicate Panel B of Table 3 the user changes the calibration in the file as follows: thetasp=0.55; eps=-9; FSL=0. To replicate Panel C the user changes the calibration in the file as follows: thetasp=0.55; eps=0; FSL=1. The file 'Table 3.m' is adapted from the Matlab code for Coibion and Gorodnichenko (American Economic Review, 2011, Table 1).