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cognitive load

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    Attention & Memory Entry #0184

    Why background music helps one task and ruins another

    Music with lyrics impairs reading and leaves arithmetic untouched. The damage is channel-specific, not a general drain on attention.

    Adept
    The hidden part #0184

    Music competes only with tasks that use the same channel. Lyrics fight language; a beat does not.

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    Attention & Memory Entry #0187

    The reason a countdown clock destroys comprehension

    The clock does not only add pressure. It occupies the same working memory the text needs, so the reader keeps the urgency and loses the terms.

    Adept
    The hidden part #0187

    A countdown does not make people read faster. It makes them read the clock instead of the clause.

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    Sound Design Entry #1013

    Why wordless music in a room sells more than silence

    Instrumental music sets an emotional tone without competing for the verbal processing the shopper needs to read labels and weigh options.

    Novice
    The hidden part #1013

    Lyrics steal the same mental bandwidth the shopper needs to compare prices — wordless music warms the room without touching the calculator.

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