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Do Social Interactions Explain Ethnic Differences In Psychological Distress And The Protective Effect Of Local Ethnic Density? A Cross-Sectional Study Of 226 487 Adults In Australia, Xiaoqi Feng, Thomas Astell-Burt, Gregory Kolt Jan 2013

Do Social Interactions Explain Ethnic Differences In Psychological Distress And The Protective Effect Of Local Ethnic Density? A Cross-Sectional Study Of 226 487 Adults In Australia, Xiaoqi Feng, Thomas Astell-Burt, Gregory Kolt

Faculty of Social Sciences - Papers (Archive)

Background A frequently proposed, but under-researched hypothesis is that ethnic density benefits mental health through increasing social interactions. We examined this hypothesis in 226 487 adults from 19 ethnic groups aged 45 years and older in Australia. Methods Multilevel logit regression was used to measure the association between ethnicity, social interactions, own-group ethnic density and scores of 22+ on the Kessler scale of psychological distress. Self-reported ancestry was used as a proxy for ethnicity. Measures of social interactions included a number of times in the past week were (i) spent with friends or family participants did not live with; (ii) …


Where Do Clonal Coral Larvae Go? Adult Genotypic Diversity Conflicts With Reproductive Effort In The Brooding Coral Pocillopora Damicornis, David J. Ayre, Karen Miller Jan 2004

Where Do Clonal Coral Larvae Go? Adult Genotypic Diversity Conflicts With Reproductive Effort In The Brooding Coral Pocillopora Damicornis, David J. Ayre, Karen Miller

Faculty of Science, Medicine and Health - Papers: part A

Earlier studies of the coral Pocillopora damicornis provide a conflicting picture of its use of sexual and asexual reproduction for population maintenance. In Western Australia, colonies are asexually viviparous, and populations appear to be maintained by localised asexual recruitment but founded by genotypically diverse colonists. However, on Australia¹s Great Barrier Reef (GBR), as in many other regions, populations display little or no evidence of any asexual recruitment. We used allozyme electrophoresis to test for asexual input into local populations of P. damicornis at One Tree Island on the southern GBR. Contrary to expectation we found that all of 136 planulae …