トロント大学スカボロー校の研究チームは、ある一日に精神的な明晰さを感じることが生産性を最大40分向上させ得ることを発見した。「Science Advances」誌に掲載されたこの研究では、12週間にわたって大学生を追跡調査し、思考の明瞭さがより大きな目標の設定と達成に関連していることを明らかにした。睡眠や業務量といった要因が、こうした日々の変動に影響を与えている。
トロント大学スカボロー校心理学部の准教授であるセンドリ・ハッチャーソン氏率いる研究チームは、精神的な明晰さの日々の変化が目標達成にどのような影響を与えるかを調査した。参加者は、思考の速度と正確さを測定する認知テストを毎日受けたほか、自身の目標、生産性、気分、睡眠、業務量について報告した。学生たちは、普段より精神的に鋭敏だと感じた日には、より多くのタスクを完了し、特学業面でより高い目標を掲げる傾向が見られた。これは、やり抜く力（グリット）や自制心といった個人の特性とは無関係であった。ハッチャーソン氏は「誰にでも調子の良い日と悪い日がある。私たちが捉えているのは、その良い日と悪い日を隔てる要因です」と指摘した。
AIによるレポート AIによって生成された画像 事実確認済み
University of Notre Dame researchers report evidence that general intelligence is associated with how efficiently and flexibly brain networks coordinate across the whole connectome, rather than being localized to a single “smart” region. The findings, published in Nature Communications, are based on neuroimaging and cognitive data from 831 Human Connectome Project participants and an additional 145 adults from the INSIGHT Study.
People who reported more mentally stimulating experiences from childhood through older age were less likely to develop Alzheimer’s disease and tended to develop symptoms years later than peers with the lowest enrichment, according to an observational study published in Neurology.
AIによるレポート
A 20-year randomized controlled trial has shown that cognitive speed training, combined with booster sessions, reduces the risk of dementia diagnosis by 25 percent among older adults. The study, involving over 2,800 participants aged 65 and older, focused on a computer-based task requiring quick recall of visual details. While results are promising, experts urge caution due to the study's multiple outcome measures.
Researchers studying young adults with major depressive disorder have reported an unusual energy “signature” in both the brain and immune blood cells: higher ATP-related measures at rest, paired with a reduced ability to increase energy production when demand rises. The findings, published in Translational Psychiatry, may help explain common symptoms such as fatigue and low motivation, though the work is early and based on a small sample.
AIによるレポート
Brendan Clarey, deputy editor of Michigan Enjoyer, describes how replacing his iPhone with a Light Phone helped restore his attention span and creativity. He also eliminated his TV and limited computer use after work hours. The changes allowed him to read more, write creatively, and connect with others without digital distractions.
A new study finds that people over 80 who maintain sharp mental abilities, known as super agers, carry fewer copies of the main Alzheimer's risk gene and more of a protective variant. This genetic profile sets them apart even from other healthy seniors in the same age group. The research, led by Vanderbilt University Medical Center, highlights potential resilience factors against dementia.
AIによるレポート
Researchers have found that playing sounds associated with unsolved puzzles during REM sleep can help lucid dreamers solve those puzzles more effectively the next day. The study involved 20 participants who signaled awareness in their dreams through eye movements and sniffs. This technique, known as targeted memory reactivation, leverages the brain's memory processes to enhance learning during sleep.