Network of positive affect and depression in older adults: Twin study.

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Title: Network of positive affect and depression in older adults: Twin study.
Authors: Hopkins EG; University of Waikato, School of Psychological and Social Sciences, Hamilton, New Zealand. Electronic address: egracehopkins@gmail.com., Leman PJ; University of Waikato, School of Psychological and Social Sciences, Hamilton, New Zealand. Electronic address: pleman@waikato.ac.nz., Cervin M; Lund University, Lund, Sweden. Electronic address: matti.cervin@gmail.com., Numbers K; Centre for Healthy Brain Ageing (CHeBA), Discipline of Psychiatry & Mental Health, University of New South Wales, Sydney, Australia. Electronic address: k.numbers@unsw.edu.au., Brodaty H; Centre for Healthy Brain Ageing (CHeBA), Discipline of Psychiatry & Mental Health, University of New South Wales, Sydney, Australia. Electronic address: h.brodaty@unsw.edu.au., Sachdev PS; Centre for Healthy Brain Ageing (CHeBA), Discipline of Psychiatry & Mental Health, University of New South Wales, Sydney, Australia. Electronic address: p.sachdev@unsw.edu.au., Medvedev ON; University of Waikato, School of Psychological and Social Sciences, Hamilton, New Zealand. Electronic address: oleg.medvedev@waikato.ac.nz.
Source: Journal of psychiatric research [J Psychiatr Res] 2026 Jun; Vol. 197, pp. 321-329. Date of Electronic Publication: 2026 Feb 27.
Publication Type: Journal Article; Twin Study
Journal Info: Publisher: Pergamon Press Country of Publication: England NLM ID: 0376331 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-1379 (Electronic) Linking ISSN: 00223956 NLM ISO Abbreviation: J Psychiatr Res Subsets: MEDLINE
Database: MEDLINE Ultimate
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  Data: <searchLink fieldCode="AU" term="%22Hopkins+EG%22">Hopkins EG</searchLink>; University of Waikato, School of Psychological and Social Sciences, Hamilton, New Zealand. Electronic address: egracehopkins@gmail.com.<br /><searchLink fieldCode="AU" term="%22Leman+PJ%22">Leman PJ</searchLink>; University of Waikato, School of Psychological and Social Sciences, Hamilton, New Zealand. Electronic address: pleman@waikato.ac.nz.<br /><searchLink fieldCode="AU" term="%22Cervin+M%22">Cervin M</searchLink>; Lund University, Lund, Sweden. Electronic address: matti.cervin@gmail.com.<br /><searchLink fieldCode="AU" term="%22Numbers+K%22">Numbers K</searchLink>; Centre for Healthy Brain Ageing (CHeBA), Discipline of Psychiatry & Mental Health, University of New South Wales, Sydney, Australia. Electronic address: k.numbers@unsw.edu.au.<br /><searchLink fieldCode="AU" term="%22Brodaty+H%22">Brodaty H</searchLink>; Centre for Healthy Brain Ageing (CHeBA), Discipline of Psychiatry & Mental Health, University of New South Wales, Sydney, Australia. Electronic address: h.brodaty@unsw.edu.au.<br /><searchLink fieldCode="AU" term="%22Sachdev+PS%22">Sachdev PS</searchLink>; Centre for Healthy Brain Ageing (CHeBA), Discipline of Psychiatry & Mental Health, University of New South Wales, Sydney, Australia. Electronic address: p.sachdev@unsw.edu.au.<br /><searchLink fieldCode="AU" term="%22Medvedev+ON%22">Medvedev ON</searchLink>; University of Waikato, School of Psychological and Social Sciences, Hamilton, New Zealand. Electronic address: oleg.medvedev@waikato.ac.nz.
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  Data: <searchLink fieldCode="JN" term="%220376331%22">Journal of psychiatric research</searchLink> [J Psychiatr Res] 2026 Jun; Vol. 197, pp. 321-329. <i>Date of Electronic Publication: </i>2026 Feb 27.
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  Data: <i>Publisher: </i><searchLink fieldCode="PB" term="%22Pergamon+Press%22">Pergamon Press </searchLink><i>Country of Publication: </i>England <i>NLM ID: </i>0376331 <i>Publication Model: </i>Print-Electronic <i>Cited Medium: </i>Internet <i>ISSN: </i>1879-1379 (Electronic) <i>Linking ISSN: </i><searchLink fieldCode="IS" term="%2200223956%22">00223956 </searchLink><i>NLM ISO Abbreviation: </i>J Psychiatr Res <i>Subsets: </i>MEDLINE
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      – Type: doi
        Value: 10.1016/j.jpsychires.2026.02.050
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        Text: English
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        StartPage: 321
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      – TitleFull: Network of positive affect and depression in older adults: Twin study.
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              Text: 2026 Jun
              Type: published
              Y: 2026
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              Value: 197
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