Chronic psychosocial stress makes rats more ‘pessimistic’ in the ambiguous-cue interpretation paradigm

• Published in: Behavioural brain research Vol. 256; pp. 305 - 310
• Main Authors: Papciak, Justyna, Popik, Piotr, Fuchs, Eberhard, Rygula, Rafal
• Format: Journal Article
• Language: English
• Published: Shannon Elsevier B.V 01.11.2013; Elsevier
• Subjects: Acoustic Stimulation; Adult and adolescent clinical studies; Ambiguous cue; Animals; Attitude; Biological and medical sciences; Chronic Disease; Conditioning, Operant; Cues; Depression; Discrimination (Psychology); Electroshock; Fundamental and applied biological sciences. Psychology; Judgment; Male; Medical sciences; Mood disorders; Pessimism; Psychological Tests; Psychology. Psychoanalysis. Psychiatry; Psychopathology. Psychiatry; Punishment; Rat; Rats, Sprague-Dawley; Rats, Wistar; Reward; Social Defeat; Social Dominance; Stress; Stress, Psychological - psychology; Vertebrates: nervous system and sense organs; Depression; Social Defeat; Ambiguous cue; Pessimism; Rat; Stress; Mood disorder; Rodentia; Psychosocial factor; Vertebrata; Chronic; Mammalia; Animal; Optimism pessimism; Ambiguity

•We investigated whether negative judgement bias in rats can be induced psychosocially.•Rats were subjected to chronic social defeat in the resident–intruder paradigm.•Cognitive judgement bias was measured in the ambiguous-cue interpretation tests.•Rats subjected to chronic psychosocial stress are ‘...