This zip archive contains files relating to the the fitting of weight loss models, including R scripts, Stan scripts, and output from the Stan MCMC analyses. Here is a brief summary of the files: Postdia_data.txt Input data file for the MCMC analyses SE_UK_PupDev_hyp.stan Stan code for the two-phase (hyperbola) model SE_UK_PupDev_lin.stan Stan code for the linear model SE_UK_PupDev_quad.stan Stan code for the quadratic model SE_UK_PupDev11_females_hyp.R R script for running the Stan MCMC analysis for females from the 11 deg C treatment using the two-phase model There are similar R scripts for other categories of individuals and models of weight loss. stan_ind_pars11_females_hyp.txt Summary output from the Stan MCMC analysis for females from the 11 deg C treatment using the two-phase model There are similar output files for other categories of individuals and models of weight loss stan_samples11_females_hyp.txt Detailed output from the Stan MCMC analysis for females from the 11 deg C treatment using the two-phase model, for some of the parameters There are similar output files for other categories of individuals and models of weight loss, and there are also pdf files plotting the distribution of the corresponding MCMC samples.