Retrieval of negative emotional memories is often accompanied by the experience of stress. Upon retrieval, a memory trace can temporarily return into a labile state, where it is vulnerable to change. An unresolved question is whether post-retrieval stress may affect the strength of declarative memory in humans by modulating the reconsolidation process. Here, we tested in two experiments whether post-reactivation stress may affect the strength of declarative memory in humans. In both experiments, participants were instructed to learn neutral, positive and negative words. Approximately 24h later, participants received a reminder of the word list followed by exposure to the social evaluative cold pressor task (reactivation/stress group, nexp1=20; nexp2=18) or control task (reactivation/no-stress group, nexp1=23; nexp2=18). An additional control group was solely exposed to the stress task, without memory reactivation (no-reactivation/stress group, nexp1=23; nexp2=21). The next day, memory performance was tested using a free recall and a recognition task. In the first experiment we showed that participants in the reactivation/stress group recalled more words than participants in the reactivation/no-stress and no-reactivation/stress group, irrespective of valence of the word stimuli. Furthermore, participants in the reactivation/stress group made more false recognition errors. In the second experiment we replicated our observations on the free recall task for a new set of word stimuli, but we did not find any differences in false recognition. The current findings indicate that post-reactivation stress can improve declarative memory performance by modulating the process of reconsolidation. This finding contributes to our understanding why some memories are more persistent than others.
An increasing number of healthy adolescents are consuming products that can enhance their cognitive performance in educational settings. Currently, the use of pharmaceuticals is the most widely discussed enhancement method in the literature, but new evidence suggests that other methods based on Transcranial Electrical Stimulation (tES) also have potential as cognitive enhancer. Just like pharmaceutical enhancers, the availability and education-related use of tES-devices raise a broad range of ethical, legal, and societal issues that need to be addressed by policy-makers. Few studies, however, have specifically explored these issues in relation to child wellbeing. In this narrative review with systematic search, we describe the issues for child wellbeing that could arise from the availability and education-related use of tES-based enhancers by healthy minors. We demonstrate that the issues form a complex web of uncertainties and concerns, which are mainly incited by two factors. First is the high level of factual uncertainty due to gaps in empirical evidence about the exact working mechanisms and efficacy of tES. Moreover, a lack of insight into the technique’s (long-term) effects on healthy developing brains, and uncertainties about potential cognitive trade-offs have fueled concerns about the technique’s safety and impact. The second factor that contributes to the complexity of issues is the presence of moral diversity in our society. Different opinions exist on whether a certain enhancement effect would be desirable and whether potential risks would be acceptable. These opinions depend on one’s moral perspective, and the way one interprets and weights values such as the child’s autonomy and authenticity. The challenge for proper governance resides in the design of an appropriate framework that is capable of balancing the different moral perspectives in society, while recognizing the uncertainties that still exist. We therefore argue for a responsible innovation approach, which encourages an adaptive attitude toward emerging knowledge and dynamic societal values, to deal with the identified issues regarding tES-based enhancement appropriately.
The European Commission Joint Research Centre’s (JRC) Scenario Exploration System (SES) is a foresight gaming system developed to facilitate the application of futures thinking to policy-making. It was originally geared at engaging EU policy-makers with scenarios in a facilitated process with a low learning curve. Specifically, the SES was designed to help participants, in less than three hours, to engage in systemic thinking with a long-term perspective and to explore alternative futures on specific issues and themes. When applied in various contexts, the SES proved to have a broader range of applications, which led to communities of practice emerging around the tool. Successful responses to various requests to apply the tool beyond its original focus demonstrated the versatility of the SES. Specifically, we discovered its ability to accommodate a large array of scenarios to discuss a very diverse range of issues. The experience accumulated through several adaptations of the SES allows the analysis of the various strengths and weaknesses of the tool as a platform for futures thinking and sharing more broadly the know-how for the creation and application of new versions. Ultimately, this article seeks to contribute a series of design suggestions for futures practitioners seeking to develop a playful mode of interaction with scenarios, or those seeking to repurpose the original SES system for use in their own project.
Although research has been performed on participatory mechanisms in science and technology such as brokering, little seems written on intermediary organizations, e.g. science museums, taking up and embedding a participation brokerage role and systemic factors influencing these. This paper presents a qualitative case study in which six different intermediary organizations developed their participation brokerage role in a European RRI project. We demonstrate how structuring factors in the project context, the intermediary organization and the broader systemic context influenced the participation brokerage role take-up and embedding. Our findings yield implications for future capacity building endeavors among participation brokers in the making.
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