The materials component contains three files. **1. RB_MorrisStill_Replication.m** is a MATLAB function that runs the experimental program. The copy in the component is exactly as used to run the replication. It requires [PsychToolbox][1] and [ChicagoFLF font][2]. The directories on lines 19 and 24–26 would need to be changed to correspond to local directories to run the experiment on another machine. It has only been tested on the hardware described in the Replication Report. **2. RB_MorrisStill_Replication_Analysis.m** is a MATLAB script that analyzes the experimental data. It requires the function [barwitherr][3]. It compiles the data from each participant's data file. It then produces tables, figures and SPSS syntax to fully replicate the analyses reported in the original study. **3. WordLists.zip** contains the stimulus lists used in the study, obtained from the original authors. There are two lists, *1.txt* and *2.txt*. To run *RB_MorrisStill_Replication.m*, the word lists must be unzipped and placed in the folder referred to on line 26 of that function. [1]: http://psychtoolbox.org/ [2]: http://christtrekker.users.sourceforge.net/fnt/chicago.shtml [3]: http://www.mathworks.com/matlabcentral/fileexchange/30639-barwitherr-errors-varargin-/content/barwitherr.m