Medical Psychology Unit,Department of Psychiatry&Forensic Medicine,Institute of Neurosciences,School of Medicine,Autonomous University of Barcelona,Barcelona,Spain;
Welcome Trust Centre for Human Genetics,Oxford,UK;
Grupo de Pesquisa em Psicobiologia,Departamento de Psicologia Geral e Análise do Comportamento,Universidade Estadual de Londrina,Londrina,Brazil;
Anxiety; Fearfulness; Stress Hormones; HPA Axis Responses; Forced Swimming Test; Genetically Heterogeneous NIH-HS Stock; RHA-I/RLA-I Rats;