Technical efficiency and firm heterogeneity in stochastic frontier models: application to smallholder maize farms in Ethiopia

This study estimates the technical efficiency measures of maize producing farm households in Ethiopia using stochastic frontier (SF) panel models that take different approaches to model firm heterogeneity. The efficiency measures are found to vary depending on how the estimation model treats both unobserved and observed firm heterogeneity. Estimates from the ‘true’ random effects (TRE) models that treat firm effects as heterogeneity are found to be identical to those from pooled SF models. Those results differ from the ones generated from the basic random effects (RE) models that treat firm effects as part of overall technical inefficiency. The more flexible generalised ‘true’ random effects (GTRE) model that splits the error term into firm effects, persistent inefficiency, transient inefficiency, and a random noise component indicates the presence of higher levels of persistent inefficiency than transient inefficiency. The basic truncated-normal RE model and heteroscedastic RE model yields similar efficiency estimates. The GTRE model predict persistent efficiency measures similar to those from the basic RE and flexible RE model with environmental variables incorporated in the variance function as well as in the deterministic production frontier. These results imply that the RE and GTRE panel models provide reliable efficiency estimates for our data compared to the TRE models. All the estimated SF models generate comparable production function parameters in terms of magnitude and sign. Overall, the results underscore the importance of scrutinising stochastic frontier models for their reliability of analytical results before drawing policy inferences.

     

Does the famine experience of board chair hamper innovation?

This study examines whether and how the famine experiences of board chairs influence the innovation of their firms. Results using a sample comprising 8882 firm-year observations from Chinese firms during the period 2003 to 2017 reveal that the board chair's famine experience has a negative effect on innovation. This negative effect is strengthened by famine intensity and high uncertainty. The obtained results are robust to alternative measures, endogeneity issues, omitted variables, and sample selection bias. Additional analyses showed that the relationship between board chair's famine experience and innovation is mediated by cash holdings and R&D investment. The overall results contribute to imprinting theory by explaining that early-life famine experiences of board chairs create survival threat imprints among them, eventually affecting their later-life behaviors. The findings also provide implications by highlighting how the early-life traumatic experiences of executives adversely influence their firms outcomes.     

The Relation of Justice and Organizational Citizenship Behaviour in Government Ministries: The Mediating of Affective Commitment

Employee Responsibilities and Rights Journal - The literature supports affective organizational commitment (AOC) as a mediator between organizational justice (OJ) and organizational citizenship...     

Effect of design thinking approach on students’ achievement in some selected physics concepts in the context of STEM learning

International Journal of Technology and Design Education - The study investigated the effect of using a design thinking teaching method on male and female students’ achievement in some...     

Agrarian change,populism, and a new farmers' movement in 21st century Pakistani Punjab

Activists and scholars have debated whether “agrarian populisms” premised on multiple classes and groups can pursue progressive objectives if exploiters and exploited are in the same movements. In Pakistan, the militant Pakistan Kissan Ittehad emerged in 2012 by uniting different classes of owner-cultivators who are largely not in direct relations of exploitation with each other. We argue that the PKI nevertheless advances the interests of a “second tier” of rural capitalists, who exploit rural labourers, while underplaying the interests of owner-peasant farmers. This divergence of interests has contributed to the fragmentation of PKI along class and political lines, including attempts by peasant farmers to independently organize around issues particular to them. We suggest that progressive agrarian populism must hinge on the interests of rural labourers and peasant farmers and that second-tier capitalist farmers may be tactical allies as they oppose neoliberal globalization. However, rural labourers and peasants are ideologically and organizationally weak, and thus, the possibility of left-wing agrarian populism requires much legwork.     

The community impact of school-shootings on stress-related emergency department visits

School-shootings can enormously impact U.S. gun policy, but very little is known about the community mental health impact of school-shootings. We used difference-in-differences and event study analyses to compare stress-related ED visits in zip-codes within 5 miles (exposed) and in zip-codes 10–15 miles from (control) school-shootings before and after school-shootings using data from California, 2005–2011. School-shootings and fatal school-shootings were associated with annual increases of 0.7 and 1.5 stress-related ED visits per 1000 people, increases of 7% and 14%, respectively, compared to pre-shooting utilization. These previously unmeasured costs of school-shootings reinforce calls to prevent gun violence, especially in schools.     

More power for international entrepreneurs: the effect of digital readiness of economies on channeling national R&D resources to entrepreneurship

Journal of International Entrepreneurship - In the economic paradigm of the twenty-first century, the increasing importance of innovation for SMEs and their global expansion motivates research on...     

Examining the relationship between strategic alliances and the performance of small entrepreneurial firms in telecommunications

International Entrepreneurship and Management Journal - An alliance is an effective strategy for knowledge-intensive businesses in competition. Yet, little is known about how strategic alliances...     

When goliaths win and davids lose: The moderating role of perceived risk in brand biography effects

Brand biographies trace a brand's evolution to position it as an underdog (i.e., passion and determination that lead to success despite limited resources) or a topdog (i.e., success based on abundance of resources) brand. This study examines how consumers’ risk perceptions associated with brand choice influence brand biography effects. It demonstrates that when perceived risk associated with brand choice is low, consumers process brand biographies narratively, experience greater narrative transportation into underdog (vs. topdog) brand biographies, and evaluate the underdog brand more favorably. When perceived risk associated with brand choice is high, consumers respond more positively to topdog (vs. underdog) brand biographies, due to topdog brands’ greater perceived ability to reduce risk. The topdog effect observed at higher levels of perceived risk reverses, however, when consumers have the opportunity to process the brand biography before receiving high risk information, as this allows for narrative transportation into the brand biography. This study contributes to research on moderators of brand biography effects and suggests that perceived risk should play a role in marketers’ decision to emphasize underdog or topdog characteristics in brand biographies.     

‘If there is nothing else there is teaching’: Professional identity of preservice teachers in Pakistan

Coupled with developing required knowledge, skills and attitude, preservice teacher education is said to influence professional identity of a student teacher. This research aimed to understand professional identity development of prospective teachers who recently completed their 4-year preservice teacher education programme in a public university in Pakistan. To achieve the stated purpose, the research used a case study approach and collected data through semistructured interviews from five preservice teachers who recently completed their preservice education. The data suggested that moral purpose in teaching was the most influential factor in teacher identity development in this region. In addition, the status of teachers in the region, teaching practice, workplace relationships and prospective teachers' own agency influence the way they shape and reshape their professional identity. Although unexplored through a systematic research, teacher identity has been a frequently discussed topic in the context of Pakistan. This paper reports the voices of unheard and less recognized individuals (teachers) from a remote region of Pakistan. It brings forth some significant insights such as the moral purpose of teaching that has received limited attention in teacher identity development.