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AskScience Panel of Scientists XXVII

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Mind Blown
Biology

Are Daddy Long Leg Spiders Venomous?

When I was very young, a good friend of mine told me that daddy long leg spiders have some of the most potent venom in the world, but because their mouth is so small, they pose no threat to humans. I’ve always wondered, is this true or an old wives tale?

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Posted by12 hours ago
Psychology

Are scientists allowed to lie to their subjects?

I know historically it's happened but there's now more strict codes of ethics when it comes to scientific testing. If for example the subject knowing the truth would impact or impede the "honesty" of the results, would that be allowed? I obviously don't mean keeping subjects in the dark or avoiding revealing certain things. As an example, if a study was aiming to see reactions to sounds/images of people in pain, would they be allowed to say to a subject that what they were seeing is real and only reveal later that the images/sounds/videos were faked? Or is this an ethical violation?

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Posted by1 day ago
Psychology

How do we know the first two months have more impact on a child than the first twelve years?

I am currently reading "What happened to you", and in it Dr. Perry repeatedly states the fact that negative experiences within the first two months of childhood have a more significant impact on a child than ones in the next twelve years.

He goes on to state that children who have had a bad experience in the first two months and then only positive experiences for the next 12 years have worse outcomes than children in the opposite situation.

This struck me as something that would be really hard to test. How many children are really out there that bad experiences only for the first two months of their lives? How were we able to know they had bad experiences then when the children were unable to recall what happened to them?

For most two month olds isn't virtually every experience a negative one? Everything is new and scary when experienced for the first time, how would you be able to tell which/how many experiences were and were not traumatic for the child?

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Posted by1 day ago
Astronomy

If objects in space are far away, does light get scattered enough that it would look “low resolution” by the time it reaches us?

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