Question 43 When investigators try to determine what percentage of various human traits is due to nature (inheritance) and what percentage is due to nurture (the environment)scientists often examine unrelated children who have been adopted by the same family and grew up together. adopted siblings that have been separated due to divorce. non-identical siblings that were separated at birth. siblings that share only one parent and were separáted at birth. Identical human twins that were scparated at birth.

## Step 1<br />The problem is about understanding the nature vs nurture debate in psychology. This debate is about the relative importance of an individual's innate qualities (nature) and personal experiences (nurture) in determining or causing individual differences in physical and behavioral traits.<br /><br />## Step 2<br />The question asks us to identify the best scenario to study the nature vs nurture debate. The options provided are:<br />- Unrelated children who have been adopted by the same family and grew up together.<br />- Adopted siblings that have been separated due to divorce.<br />- Non-identical siblings that were separated at birth.<br />- Siblings that share only one parent and were separated at birth.<br />- Identical human twins that were separated at birth.<br /><br />## Step 3<br />The best scenario to study the nature vs nurture debate would be one where the genetic makeup is the same, but the environment is different. This would allow us to see the effects of nature and nurture separately.<br /><br />## Step 4<br />Among the options, the scenario of identical human twins that were separated at birth fits this criteria. This is because identical twins share the same genetic makeup, but their environments are different. This allows us to see the effects of nature (the genetic makeup) and nurture (the environment) separately.