How Two Brain Circuits Create Lasting Habits

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Summary: A new study finds that habit formation is governed by two separate neural circuits: one that determines whether a behavior becomes a habit and another that controls how strongly or how often that habit is performed. Researchers used an accelerated training protocol in mice to follow the neural shift as behavior moved from goal-directed … Read more

Why High Performers Are Often Overconfident

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Summary: New research finds that the widely cited Dunning-Kruger effect is largely a statistical artifact. After correcting for measurement noise and regression to the mean in large replication datasets, the apparent pattern reverses: overconfidence is common across ability levels and tends to be strongest among the highest performers. Applying improved statistical modeling to extensive replication … Read more

SRGAP2 Delays Microglial Maturation in the Human Brain

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Summary: New research shows that human microglial cells develop far more slowly than those of other species, a delay linked to human-specific duplications of the SRGAP2 gene. Scientists report that human microglia require roughly four to eight years to reach full maturity, compared with about three weeks in mice. This extended developmental timing—neoteny—aligns microglial maturation … Read more

Time-Restricted Eating Boosts Memory and Focus

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Summary: A pilot clinical trial found that combining time-restricted eating with a modest calorie reduction produced measurable cognitive benefits for older women with overweight or obesity that went beyond the effects of weight loss alone. Over six months, 47 women aged 50 to 79 followed a structured weight-loss program that cut daily intake by 500 … Read more

Alzheimer’s Genetic Risk Scores Don’t Explain SuperAgers

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Summary: New multicenter research shows that exceptional memory in advanced age—seen in “SuperAgers”—is not explained merely by having a lower inherited genetic risk for Alzheimer’s disease. Researchers assessed 142 SuperAgers (people in their 80s and 90s whose memory scores match or exceed those typical of individuals decades younger) and 89 cognitively average peers across five … Read more

Memory Erasure: How the Brain Physically Forgets

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Summary: A new study shows that non-Brownian suspensions can form, retain, and overwrite multiple microscopic memories at once. These physical memories follow dynamics that parallel how cognitive memories interact in neuroscience. Researchers examined mixtures of relatively large particles suspended in a viscous fluid. They found that two distinct types of memory—directional memory imprinted by steady … Read more

Genotype-Based Recall in Precision Psychiatry

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Summary: A new study presents a practical framework for recall-by-genotype (RbG) research in large, diverse healthcare-system biobanks to advance precision psychiatry. Using Mount Sinai’s BioMe biobank, researchers recontacted individuals carrying rare copy number variants (CNVs) associated with elevated risk for neurodevelopmental disorders and performed direct clinical and cognitive assessments that revealed critical details not captured … Read more

Too Much Robot Feedback Overwhelms Human Learners

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Summary: Researchers observed 90 adult learners attempting to interpret object-placement instructions given in Swahili by a humanoid robot. The study revealed a clear temporal trade-off: highly detailed, personalized feedback increased cognitive load and reduced the effectiveness of immediate, task-focused hints on the very next attempt, yet produced stronger overall task performance across the session. These … Read more

How Bats in Colonies Synchronize Their Echolocation

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Summary: Researchers found that greater Japanese horseshoe bats (Rhinolophus nippon) adjust and align the frequency of their echolocation calls when living together in colonies. Instead of spreading out frequencies to avoid overlap, these bats—especially lower-frequency individuals—shift upward to share a common, clutter-free frequency band that improves detection of Doppler-shifted echoes from fluttering insect prey. Key … Read more

High Social Media Use Raises Anxiety and Suicide Risk in Teens

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Summary: New longitudinal research followed 1,066 participants from about age 12 onward, collecting annual self-reported data from 2018 through 2025. The study captures the era of short-form, algorithm-driven platforms such as TikTok and identifies gender differences: girls reported higher daily social media use and a stronger connection between heavy use and anxiety symptoms. Key Facts … Read more