There are many different responses to psychological abuse. Jacobson et al. found that women report markedly higher rates of fear during marital conflicts. However, a rejoinder argued that Jacobson's results were invalid due to men and women's drastically differing interpretations of questionnaires. Coker et al. found that the effects of mental abuse were similar whether the victim was male or female. A 1998 study of male college students by Simonelli & Ingram found that men who were emotionally abused by their female partners exhibited higher rates of chronic depression than the general population. Pimlott-Kubiak and Cortina found that severity and duration of abuse were the only accurate predictors of after effects of abuse; sex of perpetrator or victim were not reliable predictors.