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questionnaire.m
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questionnaire.m
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%% questionnaire for trust rating and reliability
% created from a previous script on visibility (get_visiiblity.m)
% this function offer the subject the possibility to rate several questions
% on semicontinous sliding bars
%%
%---- subjective ratings
maxS=50;
minS=1;
ns=50;
cw=Sc.size(1)/100;
ch=5;
brct=CenterRectOnPoint([0 0 (ns *cw) (ch)],Sc.center(1),Sc.center(2)+Sc.size(2)/5);
bl = brct(3)- brct(1);
add_fixation;
Screen('Flip', Sc.window);
id=0;
question=[];
for obs= 1 : 3
for q = 1: 4
id = id+1;
question(id).id = id;
question(id).obs = obs;
question(id).quest = q;
end
end
question = question(randperm(length(question))); % randomize questions presentation
clear id
for ii = 1: length(question)
obs = question(ii).obs;
q = question(ii).quest;
question(ii).ans = randi(ns);
question(ii).haschanged = 0; % to avoid automatic responses
question(ii).response_t = NaN; % initialize response time variable
key = 1;
while sum(key) ~= 0
[T key question(ii).response_t keycode] = evalc('KbCheck'); % present only when release button
end
key = 'firstMove';
if trials(t).block == 3