title: Internal switching and backward inhibition in depression and rumination.
abstract: Prior research has suggested that impairments of switching abilities are associated with depression as well as rumination. Backward inhibition (BI) refers to the ability to inhibit the processing of previously relevant information and is demonstrated to be one of the key mechanisms underlying switching abilities. However, the association between BI in internal switching and depression/rumination remains uninvestigated. To examine this association, a modified Internal Shifting Task (IST) was administered to a sample of dysphoric and healthy control undergraduates. Results showed that depressive symptoms were not associated with difficulties in switching among subjects held in working memory, while trait ruminators performed poorly in switching internally. Surprisingly, no association between BI in internal switching and rumination/depressive symptoms was found. These findings indicate that rumination is characterized by poor performance in internal switching, but this deficit is not associated with BI.
authors.affiliation: Department of Psychology, Third Military Medical University, Chongqing, China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Chen
authors.affiliation: Department of Psychology, Third Military Medical University, Chongqing, China. Electronic address: fengzhengzhi@gmail.com.
authors.forename: Zhengzhi
authors.initials: Z
authors.lastname: Feng
authors.affiliation: Department of Education and Science, Chongqing Normal University, Chongqing, China.
authors.forename: Tao
authors.initials: T
authors.lastname: Wang
authors.affiliation: Department of Health and Agedness Service, Chongqing City Management College, Chongqing, China.
authors.forename: Hong
authors.initials: H
authors.lastname: Su
authors.affiliation: Department of Psychology, Southwest University, Chongqing, China.
authors.forename: Lihong
authors.initials: L
authors.lastname: Zhang
mesh_terms: D000293:Adolescent; D000328:Adult; D003863:Depression / Q000175:diagnosis* / Q000523:psychology*; D019959:Feeding and Eating Disorders of Childhood / Q000175:diagnosis* / Q000523:psychology*; D005260:Female; D006801:Humans; D007266:Inhibition, Psychological; D008297:Male; D008570:Memory, Short-Term / Q000502:physiology; D010775:Photic Stimulation / Q000379:methods; D011897:Random Allocation; D013334:Students / Q000523:psychology; D055815:Young Adult
keywords: Cognition; Executive function; Mental health; Vulnerability factor