Profiting from technological innovation by others: The effect of competitor patenting on firm value     

Anita M. McGahan  Brian S. Silverman 《Research Policy》2006,35(8):1222-1242

In 1986, Teece proposed a seminal framework for analyzing why innovators may fail to benefit from their innovations. He argued, in part, that firms with the requisite complementary assets can often expropriate an innovator's returns especially when appropriability regimes are weak. In this paper, we explore the implications of this framework from the perspective of an incumbent firm—more precisely, of investors in that firm—facing innovation by established corporate rivals and by inventors from outside its industry. We demonstrate that the financial-market value of publicly traded firms depends on patented innovation by competitors (both established rivals and industry outsiders). Our empirical study generates three main results. First, the financial-market value of an incumbent is negatively associated with “important” patenting by outside inventors. Second, in industries characterized by weak appropriability regimes or by a strong reliance on complementary assets, this relationship is reversed: important patenting by outsiders is positively associated with the incumbent's financial-market value. Third, the effect of outsiders’ patented innovation on the focal incumbent is qualitatively different than that of established rivals’ patented innovation on the incumbent. These results are consistent with implications of Teece [Teece, D., 1986. Profiting from Innovation, Research Policy] and with recently developed models that formalize elements of his framework. More generally, these results support theories about both the market-stealing and spillover effects of innovation.  相似文献   

When Empathy is Not Enough     

Anita Varma 《Journalism Practice》2019,13(1):105-121

Journalism that humanizes marginalized communities can advance social justice by appealing to collective solidarity. News reporting, however, often encourages audience empathy instead of solidarity by representing social injustice as individual problems. This paper examines mechanisms of empathy and solidarity in two news outlets that participated in The San Francisco Homeless Project. The San Francisco Homeless Project was a collaborative journalistic effort in June 2016 that called for attention and action to address homelessness. The San Francisco Chronicle’s coverage represents homeless people as beset with individual problems, which encourages empathy, and its accompanying solutions journalism suggests expanded individual services to address these problems. On the other hand, AlterNet emphasizes shared conditions that homeless people endure, which situates homelessness as a social injustice and invites solidarity against systemic factors that produce and maintain homelessness. This distinction is important because strictly evoking empathy for individuals places journalism on a trajectory to suggest individualistic remedies to an issue like homelessness, whereas inviting solidarity charts a course for large-scale social change.  相似文献   

The anatomy of agency: Improving academic performance in first-year university students     

Izaak Rutenberg  Louise Ainscough  Kay Colthorpe  Tracey Langfield 《Anatomical sciences education》2022,15(6):1018-1031

The transition from secondary to tertiary education can be challenging, as students must adapt to independent learning. For students in the allied health and nursing disciplines, this transition may coincide with compulsory first-year courses in anatomy, which are traditionally difficult to master. Students' agency—their capacity to make intentional choices to alter the path of their learning—may play a role in their successful completion of first-year anatomy courses. This study aimed to develop a measure for agency and to determine whether agency is associated with academic achievement. First-year students (n = 131) completed open-ended questions measuring each aspect of agency. Student responses were quantified using rubrics and then combined to create an overall agency score. Three factors of agency were determined: action, metacognition, and self-efficacy. Students with higher agency scores were significantly more likely to have higher academic achievement in anatomy compared to students with lower agency scores. The relationship between agency and academic achievement was strongest for action. These results suggest that encouraging students to be active participants in their learning may help them to achieve at university.  相似文献   

Connecting science to everyday experiences in preschool settings     

Anita Roychoudhury 《Cultural Studies of Science Education》2014,9(2):305-315

In this paper I discuss the challenges of teaching science concepts and discourse in preschool in light of the study conducted by Kristina Andersson and Annica Gullberg. I then suggest a complementary approach to teaching science at this level from the perspective of social construction of knowledge based on Vygotsky’s theory (1934/1987). In addition, I highlight the importance of the relational aspect of knowing using feminist standpoint theory (Harding 2004). I also draw from feminist research on preservice elementary teachers’ learning of science to further underscore the connection between learning content and everyday experiences. Combining these research strands I propose that science needs to be grounded in everyday experiences. In this regard, the idea is similar to the choices made by the teachers in the study conducted by Andersson and Gullberg but I also suggest that the everyday experiences chosen for teaching purposes be framed appropriately. In and of itself, the complexity of everyday experiences can be impediment for learning as these researchers have demonstrated. Such complexities point to the need for framing of everyday experiences (Goffman 1974) so that children can do science and construct meaning from their actions. In the conclusion of my discussion of science and its discourse in preschool settings, I provide examples of everyday experiences and their framings that have the potential for engaging children and their teachers in science.  相似文献   

Hostile-Helpless state of mind as further evidence of adult disorganized states of mind in neglecting families     

Tristan Milot  Andra Lorent  Diane St-Laurent  Annie Bernier  George Tarabulsy  Jean-Pascal Lemelin  Louise S. Éthier 《Child abuse & neglect》2014

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Spheres of influence: what shapes young people’s aspirations at age 12/13 and what are the implications for education policy?     

Louise Archer  Jennifer DeWitt  Billy Wong 《教育政策杂志》2014,29(1):58-85

Young people’s aspirations remain an enduring focus of education policy interest and concern. Drawing on data from an ongoing five-year study of young people’s science and career aspirations (age 10–14), this paper asks what do young people aspire to at age 12/13, and what influences these aspirations? It outlines the main aspirations and sources of these aspirations as expressed by young people in England in the last year of primary school (survey of 9000+ Y6 pupils, aged 10/11, interviews with 92 children and 76 parents) and the second year of secondary school (survey of 5600+ Y8 pupils, aged 12/13, interviews with 85 pupils). We demonstrate how aspirations are shaped by structural forces (e.g. social class, gender and ethnicity) and how different spheres of influence (home/family, school, hobbies/leisure activities and TV) appear to shape different types of aspirations. The paper concludes by considering the implications for educational policy and careers education.  相似文献   

The Role of Relational and Instructional Classroom Supports in the Language Development of At-Risk Preschoolers     

Carolyn S. Gosse  Anita S. McGinty  Andrew J. Mashburn  LaVae M. Hoffman  Robert C. Pianta 《Early education and development》2014,25(1):110-133

The present study examined the extent to which preschool classroom supports—relational support (RS) and instructional support (IS)—are associated with children's language development and whether these associations vary as a function of children's language ability. The language skills of 360 children within 95 classrooms were assessed using an expressive narrative task in the fall and spring of the preschool year, teachers rated RS in the fall, and observations of IS were collected across the year. Research Findings: Hierarchical linear models revealed main effects of IS, but not RS, on preschoolers’ development of expressive language skills. In addition, the associations between RS and IS on children's expressive language development were moderated by children's fall language ability. Specifically, the association between IS and language development was stronger for children with stronger expressive language skills, and the association between RS and language development was stronger for children with weaker expressive language skills. Practice or Policy: These findings suggest that professional development for preschool teachers might focus on aligning classroom supports with the needs of children with weaker language skills who are at risk for difficulty acquiring literacy.  相似文献   

Methodological Concerns Comparing Buzzy to Transilluminator Device     

Amy L. Baxter  M. Louise Lawson 《Indian journal of clinical biochemistry : IJCB》2014,29(1):114-115

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Validating the multimedia activity recall for children and adolescents in a large New Zealand sample     

Ralph Maddison  Louise S. Foley  Tim S. Olds  Kate Ridley  Yannan Jiang 《Journal of sports sciences》2013,31(5):470-478

Abstract

The aim of the study was to validate the self-report Multimedia Activity Recall for Children and Adolescents (MARCA) against accelerometry for the assessment of physical activity in New Zealand children. Participants (n = 716, 10–18 years) recalled 3–4 days of activity using the MARCA and underwent a partially overlapping 7-day accelerometry protocol during a national survey. Spearman correlation coefficients (ρ) assessed the association between accelerometer-derived counts per minute and MARCA-derived physical activity level and time in locomotion. Both data sources estimated time spent in light and moderate–vigorous physical activity. Association and agreement between methods for light physical activity and moderate–vigorous physical activity was assessed using correlations and Bland–Altman plots respectively, and paired t-tests conducted. Accelerometer-derived activity counts were moderately correlated with both MARCA-derived physical activity level and locomotion (ρ = 0.38, P < 0.0001). The correlation between methods was –0.14 for light physical activity and 0.28 for moderate–vigorous physical activity (P < 0.0001). The MARCA overestimated moderate–vigorous physical activity compared with accelerometry (120 min, P < 0.0001), which increased as moderate–vigorous physical activity time increased. Some sex and ethnicity (Māori [indigenous] versus non-Māori) differences were observed. Overall, the MARCA indicated moderate validity for assessment of physical activity level, locomotion and moderate–vigorous physical activity and poor validity for assessment of light physical activity. This was comparable to other self-report tools. The MARCA has utility for future large-scale research.  相似文献   

The Association of Objectively Determined Physical Activity Behavior Among Adolescent Female Friends     

Louise Schofield  Kerry W. Mummery  Grant Schofield  Will Hopkins 《Research quarterly for exercise and sport》2013,84(2):9-15

The purpose of this study was to examine the extent to which physical activity among adolescent female friends is interdependent. The participants were 318 adolescent girls with a mean age of 16.0 years (range: 15–18 years). Pedometry was used to assess physical activity over 4 days. The relationship between an individual girl and her first-nominated reciprocal friend's physical activity level was moderate (r = 0.45, 90% confidence interval = 0.31, 0.56), when the friendship was nonreciprocal it was trivial (r = -.06, 90% confidence interval = -.36. .25). Friends' physical activity levels explained between 27% and 32% of an individual's pedometer-determined physical activity level. Reciprocity of friendship is an important variable to consider when understanding the relationship between adolescent female friends' physical activity. When friendships are reciprocal, there is a stronger relationship between friends' physical activity.  相似文献