text: **Figure 6.**Chain traces. Each color signifies an individual chain. 
  
  **Figure 7.**Posterior estimates of the*α*parameter plotted against the prior for two synthetic subjects, 
  one from each group. 
  (cid:7)  (cid:4) 
  
  # Sample from the model prior 
  prior_chains = sample ( model , Prior (), 1000 ) 
  # Rename parameters from the prior chains to match the posterior chains 
  renamed_prior_chains = rename_chains ( prior_chains , model ) 
  
  # Plot the posterior and prior for the first subject 
  plot_parameters ( renamed_prior_chains [: ,1 :1 ,: ], renamed_posterior_chains [:,1:1,:]) 
  # Visualize the true alpha value 
  vline !([ data [1,: Alpha ]] , line =: dash , color = : darkorange2 , label = " Generative Alpha " ) 
  
  # Plot the posterior and prior for the last subject 
  plot_parameters ( renamed_prior_chains [: , 10 : 10 ,: ], renamed_posterior_chains [:, 10 : 10 ,: ]) 
  # Visualize the true alpha value 
  vline !([ data [ 3000 ,: Alpha ]], line = : dash , color = : darkorange2 , label = " Generative Alpha ") 
  (cid:6)  (cid:5) 