Correlation is not causation! This article says, very high IQ is anti-correlated with perception of effectiveness.
That might be because having a high IQ causes people to perceive you as less effective.
It also might be because having really high IQ makes you more likely to be promoted, and is independent of other traits (like charisma or conscientiousness) which impact perception of effectiveness and therefore the population of people promoted without really high IQ tends to score higher on those other traits on average. Selection bias, in other words.
Based on the evidence presented, we just don’t know. Everyone arguing over why very high IQ “causes” the effect we are seeing might just be making stuff up, because we don’t know if there is a causal relationship at all.
That might be because having a high IQ causes people to perceive you as less effective.
It also might be because having really high IQ makes you more likely to be promoted, and is independent of other traits (like charisma or conscientiousness) which impact perception of effectiveness and therefore the population of people promoted without really high IQ tends to score higher on those other traits on average. Selection bias, in other words.
Based on the evidence presented, we just don’t know. Everyone arguing over why very high IQ “causes” the effect we are seeing might just be making stuff up, because we don’t know if there is a causal relationship at all.