Disentangling Stereotypes towards Older Age Groups: Evidence from Factorial Survey Experiments in China and the USA.

INTRODUCTION: Older adults are usually perceived as warmer but less competent than younger adults. This study examined how these stereotypes are related to domain-specific attributes and how individuals' values may moderate the association. METHODS: We recruited 560 Chinese participants (mean age [SD]: 23.14 ± 7.08 years old, ranging from 18 to 60 years old) and 479 American participants (mean age [SD]: 31.37 ± 7.19 years old, ranging from 18 to 57 years old). Participants rated perceived warmth and competence of older adults based on vignettes with varying descriptions of specific domains (i.e., three relational domains: number of friends, family relationship quality, and engagement in neighbourhood activities; and three individualistic domains: income, depression, and memory) and personal attributes (i.e., gender, age, and independence). RESULTS: Firstly, the results showed that relational domains predict warmth, whereas individualistic domains predict competence in both samples from China and the USA. Secondly, in both samples, people with higher communal values attributed more relevance to relational domains on judgement of warmth. Lastly, only in the US sample did people with higher agentic values attribute more relevance to individualistic domains on judgement of competence. DISCUSSION/CONCLUSION: The study revealed that personal values, when determined relatively, contribute to stereotypes of older adults in the two independent samples.

Association of the Recessive Allele vrn-D1 With Winter Frost Tolerance in Bread Wheat.

Winter frost has been considered the primary limiting factor in wheat production. Shimai 12 is an elite wheat cultivar grown in central and southern Hebei province of China, but sensitive to winter frost. In this study, the winter frost tolerant cultivar Lunxuan 103 was bred by introducing the recessive allele vrn-D1 from winter wheat Shijiazhuang 8 (frost tolerance) into Shimai 12 using marker-assisted selection (MAS). Different from Shimai 12, Lunxuan 103 exhibited a winter growth habit with strong winter frost tolerance. In the Shimai 12 × Shijiazhuang 8 population, the winter progenies (vrn-D1vrn-D1) had significantly lower winter-killed seedling/tiller rates than spring progenies (Vrn-D1aVrn-D1a), and the consistent result was observed in an association population. Winter frost damage caused a significant decrease in grain yield and spike number/m2 in Shimai 12, but not in Lunxuan 103 and Shijiazhuang 8. The time-course expression analysis showed that the transcript accumulation levels of the cold-responsive genes were higher in Lunxuan 103 and Shijiazhuang 8 than in Shimai 12. Lunxuan 103 possessed the same alleles as its parents in the loci for plant height, vernalization, and photoperiod, except for the vernalization gene Vrn-D1. An analysis of genomic composition showed that the two parents contributed similar proportions of genetic compositions to Lunxuan 103. This study provides an example of the improvement of winter frost tolerance by introducing the recessive vernalization gene in bread wheat.

Obtaining Information From Different Sources Matters During the COVID-19 Pandemic.

BACKGROUND AND OBJECTIVES: Older adults might be less information-seeking in comparison to younger adults. Yet, when a crisis hits, rather than relying on only a few information sources, it is important for people to gather information from a variety of different sources. With more information sources, people are more likely to obtain a more realistic perception of the situation and engagement of health behaviors. This study examined the association between age and information-seeking patterns, and how information-seeking patterns influenced worry about coronavirus disease 2019 (COVID-19) and protective measures taken during the pandemic. RESEARCH DESIGN AND METHODS: This study was conducted from March to May 2020. Ninety younger adults and 105 older adults were recruited in a 21-day daily diary study. Participants reported the types of sources where they received COVID-19-related information, worry from these information sources and protective health behaviors performed each day. Multilevel serial mediation analysis was performed. RESULTS: Concurrent and time-lagged analyses both revealed that older adults received information from more sources, and more frequently from traditional (e.g., newspaper and TV) and interpersonal sources (e.g., information shared by friends and families), than did younger adults. When receiving information from more sources, older adults were more worried about COVID-19 and performed more protective health behaviors. DISCUSSION AND IMPLICATIONS: These results demonstrated the utility of having more information sources in the context of a public health crisis and offered suggestions for future public communication and community engagement.