It turns out that making them look more human elevates our concern:
See web-only content:
http://www.theatlantic.com/daily-dish/archive/2008/05/why-androids-are-creepy/217106/
A discussion of the issue can be found here.
This article available online at:
http://www.theatlantic.com/daily-dish/archive/2008/05/why-androids-are-creepy/217106/
