---ok, I asked a relative of mine who is studying cog psych at grad school about this, and her response seemed to make sense, so I'll post it here.
>_prefer_ familiar stimuli, this is typically measured in increased >sucking, etc. However, children will orient to an unfamiliar stimuli >quicker than a familiar one. Almost like they are more attracted to >an unfamiliar stimulus. I haven't read the article about attending to >familiar faces, however, i do know in general children prefer (what >books call "more engaged") faces in general. they will look at them >longer and follow the movement of the face with their eyes. babies >also prefer their mother's (familiar) voice over a stranger's. (they >suck more.) >I'm still trying to sort it out totally in my head, but I think, from >what I have learned in development that ther is a difference between >_preference_ and _attention_.
to me this means that an unfamiliar stimulus will more quickly attract a childs attention, but that a familiar stimulus will hold their attention longer. Does this make sense?
-paul prestopnik