2 ms·
http://psychology.stanford.edu/~lera/papers/sci-am-2011.pdf http://psychology.stanford.edu/~lera/papers/sci-am-2011.pdf
by kgc 15y ago
http://psychology.stanford.edu/~lera/papers/sci-am-2011.pdf http://psychology.stanford.edu/~lera/papers/sci-am-2011.pdf