A study of worrying.
D000223:Adaptation, Psychological; D000786:Anger; D001007:Anxiety; D001288:Attention; D001290:Attitude; D003071:Cognition; D004644:Emotions; D005239:Fear; D006801:Humans; D009497:Neurotic Disorders; D011340:Problem Solving; D011594:Psychometrics