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IQ-fluid (adj.): Describing a person whose effective [intelligence] and cognitive performance fluctuate [significantly] over extended periods of time — typically weeks, months, or longer — rather than just day-to-day. During high phases, they display very high-IQ traits like sharp reasoning, creativity, quick learning, and strong problem-solving. In low phases, performance drops noticeably with brain fog, slower thinking, and poorer decision-making. These longer-term shifts can be influenced by nootropics, supplements, lifestyle changes, hormones, stress, mental health, or [environmental] factors. The term highlights real cognitive variability that traditional IQ tests (designed to measure stable traits) often don't capture.
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