Social IsolationSocial BehaviorLonelinessSocial SupportArvicolinaeSocial EnvironmentStress, PsychologicalBehavior, AnimalPolydipsiaHousing, AnimalSocial PerceptionSocial ClassAnxietyHandling (Psychology)Social AdjustmentInterpersonal RelationsSocial DominanceSensory GatingStartle ReactionSocial MediaSocial WorkCorticosteroneHierarchy, SocialPregnanoloneSocial SciencesAnalysis of VarianceReceptors, Corticotropin-Releasing HormonePituitary-Adrenal SystemQuestionnairesAdaptation, PsychologicalDepressionAggressionArrhythmia, SinusRestraint, PhysicalSocioeconomic FactorsMotor ActivityDepressive DisorderHealth StatusSocial DistanceSocial ChangeHypothalamo-Hypophyseal SystemQuality of LifeEmotionsSex FactorsOxytocinResidence CharacteristicsHealth Status IndicatorsUnemploymentMaze LearningSocial ConditionsFearLimbic System