%A NAKAYACHI, Kazuya %T An Examination of Zero-risk Effect in Willingness to Pay for Protective Actions %J The Japanese journal of psychology %0 Journal Article %@ 00215236 %I The Japanese Psychological Association %D 1998 %8 1998-00-00 %V 69 %N 3 %P 171-177 %U http://ci.nii.ac.jp/naid/110000240127/en/ %R 10.4992/jjpsy.69.171