Subjective Experiences of Japanese Inpatients With Chronic Schizophrenia

Nakaya, Makoto; Kusumoto, Katsunori; Ohmori, Ken

doi:10.1097/00005053-200202000-00003

Cited by 11 publications

(10 citation statements)

References 20 publications

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“…PRISMA study retrieval flow diagram. Forest plot of studies in the meta-analysis between motivation and clinician-rated negative symptom measures (k = 46) (Arbour-Nicitopoulos et al, 2014;Breitborde et al, 2014;Choi et al, 2012;Choi et al, 2016;DeRosse et al, 2014;Dowd et al, 2016;Duncan et al, 2016;Engel and Lincoln, 2016;Evensen et al, 2012;Fervaha et al, 2013b;Fervaha et al, 2014a;Fisher et al, 2017;Fiszdon et al, 2016;Fiszdon et al, 2017;Gard et al, 2014;Huang et al, 2016;Jang et al, 2016a;Jang et al, 2016b;Kako et al, 2014;Keefe et al, 2012;Kiang et al, 2003;Kim et al, 2016;Lincoln et al, 2016;Liraud et al, 2004;Llerena et al, 2013;Minyaycheva et al, 2017;Nakaya et al, 2002;Papsuev et al, 2015;Reddy et al, 2015a;Schlier et al, 2015;Takeda et al, 2017;Tas et al, 2012;Vinogradov et al, 2013;Wang et al, 2015;Yon and Loas, 2000). b Includes studies that were published as both a conference abstract and article.…”

Section: Supplementary Materialsmentioning

confidence: 99%

Clarifying the overlap between motivation and negative symptom measures in schizophrenia research: A meta-analysis

Luther

Fischer

Firmin

et al. 2019

Schizophrenia Research

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Motivation and negative symptom research has recently been hampered by a series of inconsistent findings, leading to calls for a greater consensus on the type of measures used across studies. To inform this issue, we conducted a meta-analysis that quantified the association between motivation measures (self-report, performance-based) and clinician-rated negative symptom measures as well as a series of moderator analyses to develop a greater understanding of the measurement factors impacting this relationship. Forty-seven eligible studies with people with schizophrenia-spectrum disorders were included. Using a random-effects meta-analytic model, a small but significant overall effect size emerged between motivation and clinician-rated negative symptoms (r = −.18). Several significant moderators were identified, including the generation of negative symptom measures such that there was a significantly stronger relationship between motivation and secondgeneration (r = −.38) than first-generation negative symptom measures (r = −.17). Further, the type of performance-based measure used moderated the relationship, with effort discounting tasks most strongly related to negative symptoms (r = −.44). The domain of motivation assessed (intrinsic, extrinsic, amotivation) also moderated the relationship. These findings help to identify sources of inconsistencies observed in prior studies and point to both second-generation and effort discounting tasks as the most promising types of measures, particularly for those interested in validating motivation measures or assessing the effectiveness of motivation treatments. Although additional research is needed, our results suggest that using these measures may help to reduce inconsistencies across studies and move the field forward.

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Section: Supplementary Materialsmentioning

confidence: 99%

Clarifying the overlap between motivation and negative symptom measures in schizophrenia research: A meta-analysis

Luther

Fischer

Firmin

et al. 2019

Schizophrenia Research

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“…Therefore, Kim et al stated that the important factors influencing insight were subjective suffering previously experienced by patients and how much such suffering was diminished by treatment. Nakaya et al8 also examined 129 inpatients with chronic-phase schizophrenia to establish the relationship between Subjective Experience of Deficits in Schizophrenia (SEDS), which was used in our study, and the question items related to insight (G12) in the Positive and Negative Syndrome Scale (PANSS);10 however, no significant correlation was observed. Such inconsistent findings may be attributed to differences in attributes of the patients studied (such as duration or stage of illness) and differences in the measures evaluated.…”

Section: Introductionmentioning

confidence: 99%

“…However, subjective experience has been excessively overlooked in the symptomatic assessment of schizophrenia, because of the long-term emphasis on objective psychopathological evaluation and because of tenuous scientific evidence. Few studies have evaluated the relationship between the subjective experience of schizophrenia and insight 6–8…”

Section: Introductionmentioning

confidence: 99%

The relationship between insight and subjective experience in schizophrenia

Kako¹,

Ito²,

Hashimoto³

et al. 2014

NDT

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ObjectivesTo examine the relationship between level of insight and various subjective experiences for patients with schizophrenia.Materials and methodsSeventy-four patients with schizophrenia who were discharged from our hospital were evaluated. The level of insight into their illness and various subjective experiences were evaluated at discharge. We used the Scale to Assess Unawareness of Mental Disorder (SUMD) for evaluation of insight. In addition, five different rating scales were used to evaluate subjective experiences: Subjective Experience of Deficits in Schizophrenia (SEDS), Subjective Well-being under Neuroleptic drug treatment Short form (SWNS), Schizophrenia Quality of Life Scale (SQLS), Beck Depression Inventory (BDI), and the Drug Attitude Inventory (DAI)-30.ResultsThe SWNS and the scores for awareness of mental disorder and awareness of the social consequences of mental disorder on SUMD showed a weak positive correlation. The DAI-30 showed a significant negative correlation with most general items on SUMD and a negative correlation between the subscale scores for the awareness and attribution of past symptoms. SEDS, SWNS, SQLS, and the BDI significantly correlated with the subscale scores for awareness of current symptoms on SUMD, and weakly correlated with the subscale scores for attribution of current negative symptoms.ConclusionAwareness of subjective distress was related to awareness of having a mental disorder. Feeling subjective distress was related to awareness of current symptoms, as well as to the ability to attribute current negative symptoms to a mental disorder. Positive attitudes toward medication correlated with better general insight into the illness.

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“…These experiences, if present, can be assessed in most affected subjects with the help of guided questioning [1,10]. Recent studies have shown that subjective experiences have important implications for early recognition of schizophrenia and related disorders [1,11–14].…”

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confidence: 99%

Relationship Between Subjective Experiences and Psychopathological Dimensions in Schizophrenia

Kim

Byun

Ann

et al. 2010

Aust N Z J Psychiatry

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The results of our study suggest that subjective experiences are significantly associated with positive symptomatology in schizophrenia, suggesting that they may share a common underlying neural basis. Future prospective studies are necessary to confirm the stability of these relationships and to explore the diagnostic and therapeutic implications of subjective experiences in a diverse group of patients at different stages of illness.

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Subjective Experiences of Japanese Inpatients With Chronic Schizophrenia

Cited by 11 publications

References 20 publications

Clarifying the overlap between motivation and negative symptom measures in schizophrenia research: A meta-analysis

Clarifying the overlap between motivation and negative symptom measures in schizophrenia research: A meta-analysis

The relationship between insight and subjective experience in schizophrenia

Relationship Between Subjective Experiences and Psychopathological Dimensions in Schizophrenia

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