Here is an example of a card that the participants have to evaluate (the material building is still in progress, some minor modifications -like scaling, light and contrast adjustments- could appear in the final outcome).
The format is 210mm x 99mm (1/3 of A4 sheet). The material is in greyscale and printed on hard paper.
Photographs come from the university database of one of the authors (in another region that the university where the data collection is planned). The individuals on the cards are three hundred different males from 18 to 25 yo.
As we do not have the copyright to diffuse them, the current sample was blurred.
![http://openscienceframework.org/project/jQKF6/node/M5G26/files/download/sample.jpg][1]
[1]: http://openscienceframework.org/project/jQKF6/node/M5G26/files/download/sample.jpg