Dynamics (1) Contraction (1) Methods (1) Identification (1) Young adults (1) Stress (Physiology) (1) Signals and signaling (1) Pathology (1) Optics (1) Nature (1) Military service, Voluntary (1) Men (1) Light (1) Licenses (1) Informers (1) Goal (Psychology) (1) Fatigue (1) Errors (1) Error (1) Character (1) Blood--Sedimentation (1) Addition (1) Ability (1) Methods (1) Use studies (1) Use studies (1) Identification (1) Valuation (1) Women (1) Social life and customs (1)