A new theory has radically revised Stephen Hawking's 1974 theory of black holes to predict that all objects with mass may eventually disappear. Stephen Hawking's most famous theory about black holes has just been given a sinister update — one that proclaims that everything in the universe is doomed to evaporate.

Do intelligent people think faster? Researchers at the BIH and Charité – Universitätsmedizin Berlin, together with a colleague from Barcelona, made the surprising finding that participants with higher intelligence scores were only quicker when tackling simple tasks, while they took longer to solve difficult problems than subjects with lower IQ scores. In personalized brain simulations of the 650 participants, the researchers could determine that brains with reduced synchrony between brain areas literally “jump to conclusions” when making decisions, rather than waiting until upstream brain regions could complete the processing steps needed to solve the problem.

Earth probably shouldn't exist. 

That's because the orbits of the inner solar system planets — Mercury, Venus, Earth and Mars — are chaotic, and models have suggested that these inner planets should have crashed into each other by now. And yet, that hasn't happened.

New research published May 3 in the journal Physical Review X(opens in new tab) may finally explain why. 

Through a deep plunge into the models for planetary motion, the researchers discovered that the motions of the inner planets are constrained by certain parameters that act as a tether that inhibits the system's chaos. Besides providing a mathematical explanation for the apparent harmony in our solar system, the new study's insights may help scientists understand the trajectories of exoplanets surrounding other stars. 

Psychology Test and Assessment Modeling showcased in Nr. 4/2022 + 1/2023 the potentials and promises that machine learning and deep learning algorithms can bring about to improve the current assessment theory and practices in different assessment settings: low stakes and high-stakes. Hong Jiao, Qiwei He, and Lihua Yao edited the two special issues.