Konrad Lorenz, Austrian great ethnologist, have enjoyed the reputation of " the father of sexology", his achievement on sexology is outstanding, he is the Nobel Prize winner of medical science of the physiology in 1973, he is the vanguard of animal s behavior field, the main concept of ethnology: such as impressing effect, instinctive reaction, instinctive mechanism, etc.

Adopted signal detection method and indirect method, this study discussed the implicit effect of stereotype in the process of social information categorization.