%0 Journal Article
%T Modality, difficulty, and "coupling" in vigilance behavior
%J American journal of psychology
%D 1971
%A Loeb, M.
%A Binford, J. R.
%V 84
%N 4
%P 529-541
%X <p>[Abstract unavailable]</p><p>Language: en</p>
%G en
%I University of Illinois Press
%@ 0002-9556
%U http://dx.doi.org/