Experiential learning of electronics subject matter in middle school robotics courses

The purpose of this paper is to investigate whether the experiential learning of electronics subject matter is effective in the middle school open learning of robotics. Electronics is often ignored in robotics courses. Since robotics courses are typically comprised of computer-related subjects, and mechanical and electrical engineering, these three areas should be emphasized equally. Many studies reveal impressive learning of computer science and mechanical engineering, but clear evidence of the effectiveness of electronics learning in the higher order thinking skills of middle school students is still lacking. We designed three different robotics courses with electronics subject matter introduced through experiential learning. A parallel group design was used, where three different open learning courses were implemented for middle school students. Based on results of the first and second implementations, we improved students’ learning of relevant content for each successive step of the experiment. In total, 381 middle school students participated in all experiments and were surveyed using pre- and post-tests. The collected data were analyzed using a quantitative research methodology. The findings revealed that the teaching approach was effective. During the learning process, student interest in robotics increased, and overall achievement improved with a medium effect size (η² = 0.13). The best results for the learning of electronics subject matter were found in the learning process (η² = 0.44), where experimental sharing of electronics parts was the most evident approach used by the students. Examination of learning material structure in light of the shared electronics subject matter is analyzed and discussed and possible directions for future research are presented.     

Emojis to conversion on social media

Emojis have become popular in online marketing communications. Marketers use emojis to humanize brand voice and elicit an emotional response from target audiences. However, little is known about how emojis are perceived and what kind of reactions they evoke. Therefore, this study aims to verify whether exposure to emojis leads to an increased intention to purchase and whether the use of emojis impacts campaign effectiveness in a real-life environment. In a theory build-up process, we draw upon the Dual Coding Theory and emotional contagion concept and develop seven hypotheses. We performed two data collection studies to test the hypothesized relations. The first study is based on a questionnaire (N = 318), while the second is based on experimental design in a real-life business environment. Surprisingly, we found that using emojis had a negative effect on purchase intention, while the effect was positive when mediated by positive affect. Emojis increased the effectiveness of marketing campaigns for hedonic products and strongly impacted the return on advertising spent. The findings of this study have both theoretical and practical implications in the observed domains, particularly about the type of products emojis are most effective in promoting, gender differences, and real-life consumer behaviour. This is the first study to use an experimental design in a real-life scenario to capture the role of emojis on campaign effectiveness and decipher the differences between genders and their perceptions of emojis. Theoretical and practical implications together with future prospects are discussed.     

The persistence of economic sentiment: a trip down memory lane

Journal of Economic Interaction and Coordination - Although various indicators of economic sentiment are often assessed in macroeconomic studies, the generating process of economic sentiment itself...     

Serbia on the path to modern economic growth

Given the scanty and inadequate studies on Serbia's growth performance before the First World War, this paper presents production-side GDP estimates for Serbia for six years between 1867 and 1910. It probes into the growth dynamics, assessing convergence with the more developed countries of north-western Europe, as well as progress towards achieving modern economic growth. Although the economy showed some dynamism in terms of overall GDP, per capita GDP in pre-First World War Serbia grew by only 0.28 per cent per annum, as much of the overall GDP growth was eroded by rapid population growth. Far from converging with north-western Europe, Serbia continued to fall behind. Sluggish structural transformation and slow income per capita growth suggest that Serbia's transition to modern economic growth was in its infancy. Growth in the dominant agricultural sector was extensive, driven by expanding arable land and population growth. Land was affordable and easy to obtain; hence, peasants invested little in new technologies. Meanwhile, the modern industrial and service sectors were below a threshold that could sustain rapid growth. Nevertheless, this study also highlights the rapid expansion of a small modern sector and export diversification that reflected emergent ‘green shoots’ in 1905–10.     

Media negativity bias and tax compliance: experimental evidence

We study the impact of the media negativity bias on tax compliance. Through a framed laboratory experiment, we assess how the exposure to biased news about government action affects compliance in a repeated taxation game. Subjects treated with positive news are significantly more compliant than the control group. Instead, the exposure to negative news does not prompt any significant reaction compared to the neutral condition, suggesting that participants may perceive the media negativity bias in the selection and tonality of news as the norm rather than the exception. Overall, our results suggest that biased news provision is a constant source of psychological priming and plays a vital role in taxpayers’ compliance decisions.