如何一个人也能做”双盲“实验？下面是一段MATLAB代码，可以把视频随机命名，进行统计后再到EXCEL里找出正确的顺序。虽然不是严格意义上的双盲实验，但这样做大大的减少了BIAS的可能。

%randomly change video name for double-blind experiments

clear

clc

pathname = uigetdir; %pick a folder

cd (pathname) % enter the folder

dirData = dir('*.avi'); %list all videos

fileNames = {dirData.name};     %# Create a cell array of file names

videoNum = 1:numel(fileNames); % video number

nameBlind=randsample(numel(fileNames),numel(fileNames)); % randomize video

mkdir(pathname,'blind') % creat a folder to save randomized videos

newNames={};

for iFile = 1:numel(fileNames)  %# Loop over the file names

  newName = sprintf('video%02d.avi',nameBlind(iFile));  %# Make the new name

  newNames (iFile) = {newName}; % save all new names

  copyfile(fileNames{iFile},[pathname, '/blind/',newName]);        %# Rename the file

end

% save new name and old name to excel file

xlswrite('blindcount.xls', {'#Num#' 'Random No.' 'New Video Name' 'Old Video Name'}, 'FindRand','A1')

xlswrite('blindcount.xls', videoNum', 'FindRand','A2')

xlswrite('blindcount.xls', nameBlind, 'FindRand','B2')

xlswrite('blindcount.xls', newNames', 'FindRand','C2')

xlswrite('blindcount.xls', fileNames', 'FindRand','D2')