Especially if one don't even define what is the exact quantity measured. IQ is a normal distribution by definition, (IQ-100)^(1/3) is "bi-modal", it's just a simple transformation and both quantity correlates (supposedly) with the vague term "intelligence".
The question is not in bi-modality though, it's whether you can go from the left side to the right or the middle over time or you should have been born as a rock star.
The question is not in bi-modality though, it's whether you can go from the left side to the right or the middle over time or you should have been born as a rock star.