TY  - GEN
A1  - Gellert, Paul
A1  - Häusler, Andreas
A1  - Suhr, Ralf
A1  - Gholami, Maryam
A1  - Rapp, Michael A.
A1  - Kuhlmey, Adelheid
A1  - Nordheim, Johanna
T1  - Testing the stress-buffering hypothesis of social support in couples coping with early-stage dementia
T2  - Postprints der Universität Potsdam : Humanwissenschaftliche Reihe
N2  - Purpose

To test whether the negative relationship between perceived stress and quality of life (Hypothesis 1) can be buffered by perceived social support in patients with dementia as well as in caregivers individually (Hypothesis 2: actor effects) and across partners (Hypothesis 3: partner effects and actor-partner effects).

Method

A total of 108 couples (N = 216 individuals) comprised of one individual with early-stage dementia and one caregiving partner were assessed at baseline and one month apart. Moderation effects were investigated by applying linear mixed models and actor-partner interdependence models.

Results

Although the stress-quality of life association was more pronounced in caregivers (beta = -.63, p<.001) compared to patients (beta= -.31, p<.001), this association was equally moderated by social support in patients (beta = .14, p<.05) and in the caregivers (beta =.13, p<.05). From one partner to his or her counterpart, the partner buffering and actor-partner-buffering effect were not present.

Conclusion

The stress-buffering effect has been replicated in individuals with dementia and caregivers but not across partners. Interventions to improve quality of life through perceived social support should not only focus on caregivers, but should incorporate both partners.
T3  - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe - 657 
KW  - partner interdependence model
KW  - Quality-of-life
KW  - Alzheimers disease
KW  - depressive symptomatology
KW  - longitudinal cohort
KW  - caregivers
KW  - health
KW  - communication
KW  - metaanalysis
KW  - association
Y1  - 2020
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-446270
SN  - 1866-8364
IS  - 657
ER  - 
TY  - GEN
A1  - Nagel, Rebecca
A1  - Kirschbaum, Frank
A1  - Engelmann, Jacob
A1  - Hofmann, Volker
A1  - Pawelzik, Felix
A1  - Tiedemann, Ralph
T1  - Male-mediated species recognition among African weakly electric fishes
T2  - Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe
N2  - Effective communication among sympatric species is often instrumental for behavioural isolation, where the failure to successfully discriminate between potential mates could lead to less fit hybrid offspring. Discrimination between con- and heterospecifics tends to occur more often in the sex that invests more in offspring production, i.e. females, but males may also mediate reproductive isolation. In this study, we show that among two Campylomormyrus Africanweakly electric fish species, males preferentially associate with conspecific females during choice tests using live fish as stimuli, i.e. when all sensory modalities potentially used for communication were present. We then conducted playback experiments to determine whether the species-specific electric organ discharge (EOD) used for electrocommunication serves as the cue for this conspecific association preference. Interestingly, only C. compressirostris males associated significantly more with the conspecific EOD waveform when playback stimuli were provided, while no such association preference was observed in C. tamandua males. Given our results, the EOD appears to serve, in part, as a male-mediated pre-zygotic isolation mechanism among sympatric species. However, the failure of C. tamandua males to discriminate between con- and heterospecific playback discharges suggests that multiple modalities may be necessary for species recognition in some African weakly electric fish species.
T3  - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 645 
KW  - Campylomormyrus
KW  - communication
KW  - electric fishes
KW  - pre-zygotic isolation
KW  - species recognition
Y1  - 2019
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-425016
SN  - 1866-8372
IS  - 645
ER  - 
TY  - GEN
T1  - Internet, Macht, Politik
T1  - Internet, power, policy
N2  - Vor Jahren haben wir, die Politikwissenschaftler, politischen Wandel, der durch das Internet vermittelt wurde, meist nicht ernst genommen: Entweder schoben wir ihn in den Bereich der Kommunikationsforschung ab oder betrachteten ihn als virtuellen Annex des öffentlichen Lebens. Inzwischen gehört die Internet-und-Politik-Forschung zum „Pflicht“-Bereich der Regierungslehre und der Vergleichenden Politikwissenschaft. Politik findet heutzutage auch in der digitalen Arena statt. Das beschränkt sich keineswegs nur auf die Herstellung von Öffentlichkeit und das Abwägen von Standpunkten. Mitunter schlägt sich cyberweltlicher Schlagabtausch bereits direkt auf die politische Wirklichkeit nieder. In diesem Sinne bietet das Thema dieses WeltTrends-Heftes eine tour d’horizon digitaler Demokratie.
KW  - Wandel
KW  - Kommunikation
KW  - digitale Demokratie
KW  - Change
KW  - communication
KW  - digital democracy
Y1  - 2005
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-47969
SN  - 3-937786-42-2
SN  - 978-3-937786-42-1
ER  -