Functional connectivity studies have demonstrated that creative thinking builds upon an interplay of multiple neural networks involving the cognitive control system. Theoretically, cognitive control has generally been discussed as the common basis underlying the positive relationship between creative thinking and intelligence. However, the literature still lacks a detailed investigation of the association patterns between cognitive control, the factors of creative thinking as measured by divergent thinking (DT) tasks, i.e., fluency and originality, and intelligence, both fluid and crystallized. In the present study, we explored these relationships at the behavioral and the neural level, based on N = 77 young adults. We focused on brain-signal complexity (BSC), parameterized by multi-scale entropy (MSE), as measured during a verbal DT and a cognitive control task. We demonstrated that MSE is a sensitive neural indicator of originality as well as inhibition. Then, we explore the relationships between MSE and factor scores indicating DT and intelligence. In a series of across-scalp analyses, we show that the overall MSE measured during a DT task, as well as MSE measured in cognitive control states, are associated with fluency and originality at specific scalp locations, but not with fluid and crystallized intelligence. The present explorative study broadens our understanding of the relationship between creative thinking, intelligence, and cognitive control from the perspective of BSC and has the potential to inspire future BSC-related theories of creative thinking.

Recent empirical evidence reveals that creative idea generation builds upon an interplay of multiple neural networks. Measures of temporal complexity yield important information about the underlying mechanisms of these co-activated neural networks. A few neurophysiological studies investigated brain signal complexity (BSC) during the production of creative verbal associations and resting states, aiming to relate it with creative task performance. However, it is unknown whether the complexity of brain signals can distinguish between productions of typical and original verbal associations. In the present study, we investigated verbal creativity with multiscale entropy (MSE) of electroencephalography (EEG) signals, which quantifies complexity over multiple timescales, capturing unique dynamic features of neural networks. MSE was measured in verbal divergent thinking (DT) states while emphasizing on producing either typical verbal associations or original verbal associations. We hypothesized that MSE differentiates between brain states characterizing the production of typical and original associations and is a sensitive neural marker of individual differences in producing original associations. Results from a sample of N = 92 young adults revealed slightly higher average MSE for original as compared with typical association production in small and medium timescales at frontal electrodes and slightly higher average MSE for typical association production in higher timescales at parietal electrodes. However, measurement models failed to uncover specificity of individual differences as MSE in typical vs. original associations was perfectly correlated. Hence, individuals with higher MSE in original association condition also exhibit higher MSE during the production of typical associations. The difference between typical and original association MSE was not significantly associated with human-rated originality of the verbal associations. In sum, we conclude that MSE is a potential marker of creative verbal association states, but replications and extensions are needed, especially with respect to the brain-behavior relationships.

In 2022, over 1,000,000 people from Ukraine fled to Germany, mostly women and children. The aim of this study was to determine health status and socio-demographic background of Ukrainian refugee minors in Germany and to compare that to German minors. In this study, Ukrainian refugees of all ages, who voluntarily made contact with the study centres via flyers or refugee shelters, were interviewed with the help of trained interpreters from 09–12/2022. We assessed data from minors and their families on socio-economic status, general health perception, current and pre-existing infectious and non-contagious diseases, and vaccination status. The data for the minors were collected by interviewing the accompanying adults. In addition, a physical examination and serological screening for infectious and vaccine-preventable diseases were performed. Overall, 392 minors and accompanying adults (358) were included. Minors’ general and mental health were reported as “at least good" in 83% (316) and 80% (304), respectively. In 16% (63), infectious or other underlying diseases were recorded. Tuberculosis infections (7, 1.8%) and hepatitis C (2, 0.5%) were found through the serological tests. HIV could only be detected in one previously known case. Self-reported vaccinations against measles and varicella, for example, did not match serological findings (protection against measles 304; 84%; varicella 230; 64%). Conclusion: Accompanying adults often rate the general health and well-being of Ukrainian refugee minors as rather poor. Frequently, self-reported vaccinations and preexisting diseases did not match serology results; therefore, Ukrainian refugee minors without formal vaccination certificate should be offered all recommended vaccinations and be generously screened for hepatitis B, C and HIV in addition to tuberculosis. What is Known:• Infectious diseases (TB, hepatitis B/C, HIV) are more common among Ukrainian minors and vaccine hesitancy is more widespread than in many host countries and require appropriate medical care.• Displacement and war worsen medical care and have negative impact on mental health.. What is New:• Although intrafamilial spread of infectious diseases was rare (in this cohort), perceived general health of Ukrainian minors is rather poor.• Semi-structured interviews—even with interpreters—are often insufficient to collect valid medical information.