เกี่ยวกับการแทรกแซงค่าเงิน EM FX และผลกระทบที่แท้จริงเทียบกับสัญญาณรบกวน

You're hitting on a key point. Often, the initial impact is indeed psychological and short-term, especially if the underlying economic fundamentals haven't shifted. Sustained moves usually require coordinated policy changes beyond just FX intervention, like fiscal adjustments or interest rate hikes, to really anchor expectations.

Often it's a short-term liquidity play. Unless the intervention is backed by a shift in underlying economic policy or a truly massive amount of reserves, the market will usually just absorb it and go back to fundamentals. It's rarely a game-changer long-term.