Hyper-realistic manipulations of audio-visual content, i.e., deepfakes, present new challenges for establishing the veracity of online content. Research on the human impact of deepfakes remains ...sparse. In a pre-registered behavioral experiment (N = 210), we show that (1) people cannot reliably detect deepfakes and (2) neither raising awareness nor introducing financial incentives improves their detection accuracy. Zeroing in on the underlying cognitive processes, we find that (3) people are biased toward mistaking deepfakes as authentic videos (rather than vice versa) and (4) they overestimate their own detection abilities. Together, these results suggest that people adopt a “seeing-is-believing” heuristic for deepfake detection while being overconfident in their (low) detection abilities. The combination renders people particularly susceptible to be influenced by deepfake content.
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•People cannot reliably detect deepfakes•Raising awareness and financial incentives do not improve people's detection accuracy•People tend to mistake deepfakes as authentic videos (rather than vice versa)•People overestimate their own detection deepfake abilities
Neuroscience; Behavioral neuroscience; Cognitive neuroscience; Artificial intelligence; Artificial intelligence applications; Social sciences; Psychology
Radiocaesium is a pollutant with a high risk for the environment, agricultural production, and human health. It is mobile in ecosystems and can be taken up by plants via potassium transporters. In ...this study, we focused on the role of potassium transporter AtKUP7 of the KT/HAK/KUP family in Cs+ and K+ uptake by plants and in plant tolerance to caesium toxicity. We detected that Arabidopsiskup7 mutant accumulates significantly lower amounts of 134Cs in the root (86%) and in the shoot (69%) compared to the wild-type. On the other hand ability of the mutant to grow on media with toxic (100 and 200 µM) concentrations of Cs+ was not changed; moreover its growth was not impaired on low K+. We further investigated another mutant line in AtKUP7 and found that the growth phenotype of the kup7 mutants in K+ deficient conditions is much milder than previously published. Also, their accumulation of K+ in shoots is hindered only by severe potassium shortage.
Stable shell stars are ideal objects for studying basic physical principles of the formation of disks in Be stars. If these stars have a close unresolved visual companion, its contribution toward the ...modelling of the disk cannot be overlooked, as is sometimes done. The study aims to spectroscopically resolve close visual binary Be (shell) star 1 Del, which up to now was only resolved by speckle or micrometric measurements. The integral field spectroscopy obtained by the SINFONI spectrograph at the VLT telescope in the European Southern Observatory (ESO) in the infrared region was used; we supplemented these observations with visual spectroscopy with the Perek Telescope at the Ondřejov Observatory. Spectra of 1 Del were successfully resolved, and, for the first time, spectra of 1 Del B were obtained. We found that 1 Del A is a Be/shell star, while 1 Del B is not an emission-line object.
Radiocaesium is a pollutant with a high risk for the environment, agricultural production, and human health. It is mobile in ecosystems and can be taken up by plants via potassium transporters. In ...this study, we focused on the role of potassium transporter AtKUP7 of the KT/HAK/KUP family in Cs
and K
uptake by plants and in plant tolerance to caesium toxicity. We detected that
mutant accumulates significantly lower amounts of
Cs in the root (86%) and in the shoot (69%) compared to the wild-type. On the other hand ability of the mutant to grow on media with toxic (100 and 200 µM) concentrations of Cs
was not changed; moreover its growth was not impaired on low K
. We further investigated another mutant line in
and found that the growth phenotype of the
mutants in K
deficient conditions is much milder than previously published. Also, their accumulation of K
in shoots is hindered only by severe potassium shortage.
This is a conference report from the conference Encyclopedias of modernists and paradigms of modernity which has been held in Brno in the Moravská zemská knihovna with the cooperation of the ...Philosphical Faculty České Budějovice and Faculty of Arts, the Charles University.
This replication of the study of Genschow et al. (2012) examines the effect of the color red on beverage consumption. In total, 148 men were asked to consume drinks in either red- or blue-labeled ...cups. Cup labels were assigned at random. Unlike in the previous study, the findings in our replication study did not provide empirical support for the hypothesis that people will drink less from red-labeled cups than blue-labeled cups. The difference between groups in drink consumption was non-significant. Thus, the red color did not have an inhibitory effect on drink intake.
Stable shell stars are ideal objects for studying basic physical principles of the formation of disks in Be stars. If these stars have a close unresolved visual companion, its contribution toward the ...modelling of the disk cannot be overlooked, as is sometimes done. The study aims to spectroscopically resolve close visual binary Be (shell) star 1Del, which up to now was only resolved by speckle or micrometric measurements. The integral field spectroscopy obtained by the SINFONI spectrograph at the VLT telescope in the European Southern Observatory (ESO) in the infrared region was used; we supplemented these observations with visual spectroscopy with the Perek Telescope at the Ondrejov Observatory. Spectra of 1Del were successfully resolved, and, for the first time, spectra of 1DelB were obtained. We found that 1DelA is a Be/shell star, while 1DelB is not an emission-line object.
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