Ana
  • Member for 10 years
  • Last seen more than 3 years ago
  • Utrecht, Netherlands
Is there a correlation between intelligence and wearing spectacles?
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23 votes

There is a correlation between IQ and myopia (near-sightedness). I believe Arthur Jensen was the first to explore the link. Here is a newer open-source article on the topic, though there are many more....

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Are women more sensitive to high-pitched noises than men?
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17 votes

Yes, women are more sensitive to high-pitched sounds than men. Several studies (summarized here) have found that women are better than men when it comes to hearing acuity above 1 or 2 kHz: Corso (...

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Are there any benefits to drinking 1.5 liters of water first thing in the morning (water therapy)?
16 votes

It is unlikely that there are benefits for healthy individuals. On the one hand, the amount of water one should supposedly drink each morning in this therapy, would lead a person to nearly exceed ...

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Is IQ hereditary? If so, to what degree?
16 votes

While I find the above answer accurate, I think it needs further clarification because it answers a question that is different from the one that was asked. The question was: "Is IQ (mainly) a ...

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Is brain piercing real?
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14 votes

The claims about euphoria are certainly nonsense. First off, for a neuron to do anything, it needs to be stimulated appropriately. None of the neurons that are sensitive to touch and pressure are in ...

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Death of brain cells
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12 votes

The claim is not true; neurons continue to form, and the connections between them to change, throughout our lives. This paper on neurogenesis (i.e. forming of new brain cells) opens with this ...

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Is global IQ dropping over time?
12 votes

Changes in relative numbers of high-intelligent and low-intelligent people in the world should never lead to a change in global IQ. IQ is not a measure of amount of intelligence, it is a measure of ...

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Does staring at a flame slow brain activity?
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11 votes

No, staring at a flame will not slow brain activity. First of all, let's define brain activity, and see what 'slow' would mean in this context. I had a lot of trouble finding a source that's ...

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Are children raised in single parent households more prone to sexual abuse?
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10 votes

After looking at a number of statistics that don't tackle your question directly, my impression is that being in a single-parent household might be correlated with an important factor of childhood ...

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Does the range of sound we can hear decrease as we age?
7 votes

Although age-related hearing loss is not the norm, it's a quite common condition: Results showed that the prevalence of central presbyacusis increased with age and that the highest prevalence was ...

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Would born-blind people be able to make sense of shapes if they were healed?
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5 votes

The statement is correct: they would have difficulty making out shapes. David Hubel and Torsten Wiesel did a series of experiments in the sixties in which they showed that there is a critical period ...

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