Social IsolationSocial BehaviorLonelinessSocial SupportArvicolinaeSocial EnvironmentStress, PsychologicalBehavior, AnimalPolydipsiaHousing, AnimalSocial PerceptionSocial ClassAnxietySocial AdjustmentInterpersonal RelationsHandling (Psychology)Social DominanceQuestionnairesSensory GatingSocial ProblemsSocial WorkSocial MediaStartle ReactionCorticosteroneHierarchy, SocialAdaptation, PsychologicalDepressionAggressionSocial SciencesPregnanoloneAnalysis of VarianceSocioeconomic FactorsReceptors, Corticotropin-Releasing HormoneHealth StatusPituitary-Adrenal SystemDepressive DisorderArrhythmia, SinusQuality of LifeRestraint, PhysicalMotor ActivitySocial ChangeSex FactorsEmotionsSocial DistanceProblem SolvingHypothalamo-Hypophyseal SystemRisk FactorsResidence CharacteristicsHealth Status IndicatorsAge FactorsOxytocinUnemploymentSocial Behavior DisordersSocial ConditionsSocial ValuesLongitudinal StudiesMaze LearningLimbic System