Learning
Scientists reveal estrogen’s role in dopamine-driven learning
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Researchers at New York University have identified how estrogen shapes learning by strengthening dopamine-based reward signals in the brain. In experiments with rats, learning performance improved when estrogen levels were high and declined when the hormone’s activity was suppressed. The findings, published in Nature Neuroscience, may help explain cognitive fluctuations across hormonal cycles and offer clues to psychiatric disorders linked to dopamine.
Researchers have demonstrated that the single-celled protist Stentor coeruleus can engage in associative learning, similar to Pavlov's experiments with dogs. This finding suggests such cognitive abilities may predate the evolution of brains by hundreds of millions of years. The study highlights unexpected complexity in simple organisms.
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A comprehensive evaluation of the Department of Education's Matatag curriculum delivered mixed results: significant learning gains for second graders in 70 pilot schools, but teachers bore the brunt of insufficient support. Released in December by the Philippine Institute for Development Studies, the study highlights implementation challenges in the country's major education reform.