Chances are you'll have seen the instantly McDonald's logo countless times over the course of your life, whether you're a fan of the fast food giant or not.
You may not have put much thought into how the iconic design was dreamt up, however, or the clever psychological tactics that went into choosing the bright red and yellow colours.
The specific choice of red and yellow isn't just to make the sign stand out, according to psychologist and leading colour expert Karen Haller, and these eye-catching shades could well be tempting you into the golden arches without you even realising it.
