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Based on a synthesis of findings from psychology, neuroscience, and machine learning, we propose a unified theory of curiosity as a form of motivated cognition. Curiosity, we propose, is comprised of a family of mechanisms that range in complexity from simple heuristics based on novelty, salience, or surprise, to drives based on reward and uncertainty reduction and finally, to self-directed metacognitive processes. These mechanisms, we propose, have evolved to allow agents to discover useful regularities in the world – steering them toward niches of maximal learning progress and away from both random and highly familiar tasks. We emphasize that curiosity arises organically in conjunction with cognition and motivation, being generated by cognitive processes and in turn, motivating them. We hope that this view will spur the systematic study of curiosity as an integral aspect of cognition and decision making during development and adulthood.

Digital communication supports are a relevant resource for the promotion of citizens’ health literacy. Aware of this reality, in the last quarter of 2019, health professionals of Inpatient Unit A of the Neurology Service of the Coimbra Hospital and University Centre designed the ‘Digital Neuroteca’, which consists of a digital repository with various educational materials in video format, e-books, pamphlets, manuals, infographics, and directories to websites that include credible information, and other content selected by the health team. The selection criteria consider the clarity and credibility of the information in various areas such as risk factors of neurological disease, strategies, and products to support self-care and available resources. Regarding more complex contents, there is a concern to transform them into information accessible to citizens in general. These contents are accessed by patients/caregivers through a tablet/computer, in the presence of the health professional, and can also be sent by email. We got positive results with an increase of satisfaction of those involved – patients, caregivers, and professionals. Health professionals and patients/caregivers reported high satisfaction with the use of this resource given the clarity of the contents, which facilitate understanding and meet their needs, recognizing this tool as an excellent complement to the process of health literacy promotion.

Diversified trading networks have recently drawn a great deal of attention. In the process, the importance of diversity has perhaps been overemphasized. Using the trade in port wine from Portugal to Britain as an example, this essay attempts to show how a market once dominated by general, diversified traders was taken over by dedicated specialists whose success might almost be measured by the degree to which they rejected diversification to form a dedicated “commodity chain.” The essay suggests that this strategy was better able to handle matters of quality and the specialized knowledge that port wine required. The essay also highlights the question of power in such a chain. Endemic commodity-chain struggles are clearest in the vertical brand war that broke out in the nineteenth century, which, by concentrating power, marked the final stage in the transformation of the trade from network to vertical integration.