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BEH_ShopTask_01_06.m
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BEH_ShopTask_01_06.m
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function [trialpicker, manualclose] = BEH_ShopTask_01_06(window, c, block, trial, ppnr, mainstart, reminder, condition_SA, fid, fid_slider, ft_id, SCANNER)
%% Scarcity Project: Shop Task
% Inge Huijsmans
%
% Start writing 2014-10-20
% Last update 2014-10-28
%
% Experiment Design:
% In this Shop task, participants will place bids on two categories of
% products, either hedonic of utalitarian products. After the bid has been
% placed, the computer randomly generates a price per product between 50%
% and 100% of the retail price. When participants' bid is higher than the
% price generated, the trial information is saved. At the end of the
% experiment, one of these trials is selected as bonus for the participants
% (the food + remaining money)
%
% Participants will complete this task in a 2 (condition:
% scarcity/abundance) x 2 (product category: utalitarian/hedonic) within
% subjects design.
%
% Last update: changed timeout window. Too slow screen is back
%% Set seed to date+time %%
rng shuffle
% setup bitsi stuff for button responses & HR triggers
setup_bits;
ShopTaskHRlogs;
%-------------------------------------------------------------------------%
%------------------ Experiment Settings, screen parameters --------------%
%-------------------------------------------------------------------------%
% Get screen number. Default = 0
screens = Screen('Screens');
% Set colors
black = BlackIndex(screens);
white = WhiteIndex(screens);
red = [255 0 0];
green = [0 255 0];
%Hide cursor
HideCursor;
% Screen size
[screenXpixels, screenYpixels] = Screen('WindowSize', window);
midXpix = screenXpixels/2;
midYpix = screenYpixels/2.3;
%Parameters for bidding task
line_x = screenXpixels/2;
line_y = screenYpixels*0.7;
line_length = screenXpixels/3;
image_rect = [0, 0, (screenYpixels*0.6/2), (screenYpixels*0.6/2)];
image_loc = CenterRectOnPointd(image_rect, midXpix, midYpix-100);
checkbox_rect = [0, 0, 70, 70];
checkbox_loc = CenterRectOnPointd(checkbox_rect, midXpix, line_y-80);
productselection_rect = [0,0,(screenYpixels*0.7/2), (screenYpixels*0.7/2)];
productselection_loc = CenterRectOnPointd(productselection_rect, midXpix, midYpix-100);
size_reminder = size(reminder);
confirm_rect = [0 0 60 80];
confirm_rect_bl = [0 0 50 70];
line_start_x = screenXpixels/2-((screenXpixels/3)/2);
line_end_x = screenXpixels/2+((screenXpixels/3)/2);
%Bidding option
roundfactor = 0.05;
maxbid = 3;
%Presentation times
showselection = 3;
timeout = 6;
tooslow = 2;
%Save movement data per screenflip
hz = Screen('NominalFrameRate', window);
%Textstuff
Screen('TextFont', window, 'Calibri');
Screen('TextSize', window, 24);
Screen('TextStyle', window, 0);
KbName('UnifyKeyNames');
%Break text
breaktext = 'The exeperiment is pauzed by the experimenter\n\nPlease wait for the experiment to restart';
%Parameters different under pc/linux
if ispc
euro = '€';
reminder_loc = [screenXpixels-(((size_reminder(2)/4)*3)+100),100,screenXpixels-100,((size_reminder(1)/4)*3)+100];
speed = 3;
else
euro = '€';
reminder_loc = [screenXpixels-round((size_reminder(2)/8)*5),round((size_reminder(1)/8)),screenXpixels-round(size_reminder(2)/8),round((size_reminder(1)/8)*5)];
speed = 1;
end
%% Make images textures %%
for image = 1:length(c.trial(:,:,block))
c.trial{1,image,block} = Screen('MakeTexture', window, c.trial{1,image,block});
end
%Reminder
reminder = Screen('MakeTexture', window, reminder);
%Got product check
gotit = Screen('MakeTexture', window, c.gotit);
%Not Got product cross
gotnot = Screen('MakeTexture', window, c.gotnot);
%% Prepare random trial picker %%
trialpicker = cell(length(c.trial(1,:,1)), 5);
%% Experiment loop %%
%Counters & trackers
quit = 0;
total_trial = 0;
enter = 1;
%Change when closed manually
manualclose = 0;
try
while enter
if quit == 1
break
end
%% Set Trial constants %%
%Start experiment loop for each image
run = 1;
%Start with first screen
screenId = 1;
%Image texture
image = c.trial{1,trial,block};
%Image & trial info
%Set price numeric
n_price = str2double(c.trial{2,trial,block}{5});
%Set computer generated price
computerprice = rand * maxbid;
%Reset random handle position on each trial
handle_x = datasample(line_x-line_length/2:1:line_x+line_length/2,1);
%Set default bid rounded to 0.05 cents
startbid = maxbid*((handle_x-line_length)/line_length);
bid_round = select_round(startbid, roundfactor);
%Condition
condition = char(c.trial{2,trial,block}{1});
%Saving info
brand = char(c.trial{2,trial,block}{2});
product = char(c.trial{2,trial,block}{3});
filename = char(c.trial{2,trial,block}{6});
%Reset responses for each trial
tmp_bid = 0;
bid = 0;
RT = 0;
gotproduct = 0;
%Preallocate slider data
cursordata = zeros(11, (hz*timeout)+1);
while run
if quit == 1
break
end
%% Flip through Screens %%
switch screenId
case 0
%% Resynchronize Scanner %%
if strcmp(SCANNER,'Debugging')
onset_dummy_pulses = wait_for_scanner_start(3,bitsiboxScanner,scannertrigger,true);
onset_first_pulse = wait_for_scanner_start(1 ,bitsiboxScanner,scannertrigger,false);
elseif strcmp(SCANNER,'Keyboard')
% do nothing
% still, do get some timestamps so we don't need to worry about that case further down...
onset_dummy_pulses = GetSecs;
onset_first_pulse = GetSecs;
else % some kind of scanner -- wait for it
onset_dummy_pulses = wait_for_scanner(30,bitsiboxScanner,scannertrigger,true);% this might be change to 31
onset_first_pulse = wait_for_scanner(1 ,bitsiboxScanner,scannertrigger,false);
end
%Save timing
fprintf(ft_id, '%.6f\t%.6f\t%.6f\t%i\n', mainstart, onset_dummy_pulses, onset_first_pulse, 4);
%Send trigger
HR = 0;
%Restart at fixation cross
screenId = 1;
case 1
%% Screen 1 %%
% Fixation Cross %
%Fixation Cross
Screen('DrawText', window, '+', screenXpixels/2, screenYpixels/2, white);
%Presentation time
presenttime = (rand*2)+2;
%Set HR trigger
HR = c.HR_fixcross{condition_SA};
%Next Screen
screenId = 2;
case 2
%% Screen 2 %%
% Present Image %
%Image
Screen('DrawTexture', window, image, [], image_loc, 0);
%Presentation time
presenttime = (rand*2)+2;
%Set HR trigger
HR = c.HR_image{condition_SA};
%Next Screen
screenId = 3;
case 3
%% Screen 3 %%
%------------------------- Bidding -----------------------%
%------Default screen------%
%Image
Screen('DrawTexture', window, image, [], image_loc, 0);
%Likert scale
likert_draw_NL(window, line_y, sprintf('%s%i', euro, 3)', sprintf('%s%i', euro, 0), white, handle_x, sprintf('%0.2f', bid_round))
%Next screen
screenId = 4;
%%Set HR trigger
HR = c.HR_startbid{condition_SA};
%Presentation time
presenttime = 0;
case 4
%% Screen 4 %%
%------ Updating bid according to buttonpress ------%
%Participants are too slow unless they press a button
screenId = 5;
%Wait for release of all buttons
[response, ~] = bitsiboxButtons.getResponse(0.001, true);
while any(response)
[response, ~] = bitsiboxButtons.getResponse(0.001, true);
end
%While not clicked on confirmation button
confirm = 0;
flip = 1;
firstpress = 0;
movehandle = 0;
RT = 0;
while confirm == 0 && ((GetSecs - lastFlipTimestamp )<= timeout)
%Get new slider location
[response, keyDownTimestamp] = bitsiboxButtons.getResponse(0.001, true);
if response
RT=(keyDownTimestamp-lastFlipTimestamp);
end
switch response
case ButtonA
firstpress = 1;
movehandle = - 1 * speed;
case ButtonB
firstpress = 1;
movehandle = 1 * speed;
%Confirm
case ButtonC
if firstpress
confirm_pos = CenterRectOnPointd(confirm_rect, handle_x, line_y);
confirm_pos_bl = CenterRectOnPointd(confirm_rect_bl, handle_x, line_y);
Screen('FillRect', window, red, confirm_pos);
Screen('FillRect', window, black, confirm_pos_bl);
presenttime = timeout - RT;
bid = tmp_bid;
screenId = 6;
confirm = 1;
HR = c.HR_response{condition_SA};
%Send HR trigger
bitsiHR.sendTrigger(HR);
else
continue
end
%Pauze
case ButtonD
screenId = 999;
break
%Next
case ButtonE
run = 0;
enter = 0;
break
%Close
case ButtonF
run = 0;
enter = 0;
manualclose = 1;
quit = 1;
HR = c.HR_quit{condition_SA};
display(sprintf('Shoptask: trial:%i',trial));
break
otherwise
movehandle = 0;
end
if handle_x <= line_start_x-movehandle
handle_x = line_start_x;
elseif handle_x >= line_end_x-movehandle
handle_x = line_end_x;
else
handle_x = handle_x + movehandle;
end
%Update bid
tmp_bid = maxbid*((handle_x-line_length)/line_length);
bid_round = select_round(tmp_bid, roundfactor);
%Update screen
%Image
Screen('DrawTexture', window, image, [], image_loc, 0);
%Reminder
Screen('DrawTexture', window, reminder, [], reminder_loc, 0);
%Likert
likert_draw_NL(window, line_y, sprintf('%s%i', euro, 3), sprintf('%s%i', euro, 0), white, handle_x, sprintf('%0.2f',bid_round));
%Flip & wait
[VBLTimestamp, BidFlipTimestamp, FlipTimestamp, MissedFlip] = Screen('Flip', window);
WaitSecs(presenttime);
%Save cursor data
cursordata(:, flip) = [trial, flip, handle_x, response, keyDownTimestamp, tmp_bid, RT, VBLTimestamp, BidFlipTimestamp, FlipTimestamp, MissedFlip];
flip = flip+1;
end
presenttime = 0;
case 5
% ------------------- Screen 5 --------------------- %%
% Too slow %
DrawFormattedText(window, 'Too slow!', 'center', 'center', red);
%Present screen
presenttime=tooslow;
%Set HR trigger
HR = c.HR_slow{condition_SA};
%Make them redo the trial: Fixation cross
screenId = 6;
case 6
%% Screen 6 %%
%------------------- Product Selection -------------------%
%Determine if pp's got the product
gotproduct = bid >= computerprice;
if confirm ~= 0
if gotproduct
gotcolor = green;
spent = sprintf('\n%s%0.2f', euro, select_round(bid,0.05));
gotcheck = gotit;
else
gotcolor = red;
spent = sprintf('\n%s%0.2f', euro, 0);
gotcheck = gotnot;
end
else
gotcolor = red;
spent = sprintf('\n%s%0.2f', euro, 3);
gotcheck = gotnot;
end
%Draw rectangle + image + checkbox
Screen('FillRect', window, gotcolor, productselection_loc);
Screen('DrawTexture', window, image , [], image_loc, 0);
Screen('DrawTexture', window, gotcheck , [], checkbox_loc, 0);
%Presentation time
presenttime = (rand*2)+2;
%Set HR trigger
HR = c.HR_slow{condition_SA};
%Next Screen
screenId = 7;
case 7
%% Screen 7 %%
%--------------------- Price Payed -----------------------%
spent_txt = 'You have spent';
%Draw rectangle + image + gotcheck
Screen('FillRect', window, gotcolor, productselection_loc);
Screen('DrawTexture', window, image , [], image_loc, 0);
Screen('DrawTexture', window, gotcheck , [], checkbox_loc, 0);
%You have spent
DrawFormattedText(window, spent_txt, 'center',line_y, white);
Screen('TextSize', window, 60);
%Price
DrawFormattedText(window, spent, 'center',line_y, white);
Screen('TextSize', window, 24);
%Presentation time
presenttime = showselection;
%To next image
trial = trial+1;
%nr trials per block
total_trial = total_trial+1;
%Set HR trigger
HR = c.HR_moneyspent{condition_SA};
%Reset all image info
run = 0;
%Back from the start
screenId = 1;
case 999
%% Break the experiment in order to continue later
%draw it all
DrawFormattedText(window,breaktext, 'center', 0.46*screenYpixels, white);
%Set HR trigger
HR = 12;
%Wait for buttonpress
presenttime = 25;
end
%% Flip it all %%
Screen('DrawTexture', window, reminder, [], reminder_loc, 0);
[VBLTimestamp, lastFlipTimestamp, FlipTimestamp, MissedFlip] = Screen('Flip', window);
flip_stamp = toc(mainstart);
%Send trigger to HR signal for each event
bitsiHR.sendTrigger(HR); % SEND HR TRIGGER
if presenttime > 20
while presenttime
%Continue experiment when hitting spacebar
[response, keydownTimeStamp] = bitsiboxButtons.getResponse(0.001, true);
%how long are we waiting?
RT = keydownTimeStamp - lastFlipTimestamp;
switch response
case ButtonD
screenId = 0;
break
case ButtonF
run = 0;
enter = 0;
manualclose = 1;
display(sprintf('Shoptask: trial:%i',trial));
break
otherwise
continue
end
end
presenttime = 0;
end
WaitSecs(presenttime);
%% Write data per Screen %%
%Save data of each screen
fprintf(fid, '%i\t%i\t%i\t%i\t%i\t%i\t %.6f\t%.6f\t%.6f\t%.6f\t%.6f\t%.6f\t%i\t%.6f\t%.6f\t%i\t%.6f\t%i\t%.6f\t%s\t%s\t%s\t%s\t%.2f\n', ppnr, block, condition_SA, total_trial, trial, screenId, presenttime, VBLTimestamp, lastFlipTimestamp, FlipTimestamp, MissedFlip, flip_stamp, HR, startbid, bid_round, bid, computerprice, gotproduct, RT, condition, brand, product, filename, n_price);
%Experiment finished
if length(c.trial(:,:,1)) < trial
run = 0;
enter = 0;
end
end
cursordata(12,:) = repmat(ppnr, [1, length(cursordata)]);
cursordata(13,:) = repmat(block, [1, length(cursordata)]);
cursordata(14,:) = repmat(condition_SA, [1, length(cursordata)]);
cursordata(15,:) = repmat(total_trial, [1, length(cursordata)]);
%Save cursor movement on each trial
fprintf(fid_slider, '%.8f\t%.8f\t%.8f\t%.8f\t%.8f\t%.8f\t%.8f\t%.8f\t%.8f\t%.8f\t%.8f\t%i\t%i\t%i\t%i\n', cursordata);
%Save info for random trial picker
trialpicker((trial-1),:) = {((block-1)*length(c.trial(:,:,1)))+(trial-1), gotproduct, bid_round, brand, product};
end
%Close bitsi's
close_bitsi;
catch me
me.message
me.stack
Screen('CloseAll')
end
end