Say you're staring at the image of a small circle in the center of a larger circle: The larger one looks green, but the smaller one appears gray. Except your friend looks at the same image and sees another green circle. So is it green or gray? It can...
El CIS ha realizado por primera vez un estudio sobre 'Actitudes y opiniones sobre la infancia y la adolescencia' donde pregunta por los problemas que...