To evaluate the psychologist's argument, we need to determine which statement best supports the conclusion that children are more inclined to share with family members when they feel they are being observed by an authority figure.
Answer Choices Analysis:
A. The toys in the room were new to the children, rather than toys they had previously played with at home.
This statement does not directly address the influence of being observed by an authority figure on sharing behavior with siblings vs. non-siblings. The novelty of the toys could influence the children's interest in sharing, but it doesn't specifically strengthen the argument about the presence of an authority figure.
B. The observing adult was a parent of the siblings, rather than a stranger or non-relative adult.
If the observing adult was a parent, this could suggest that the children's increased sharing with siblings is influenced by the presence of a familiar authority figure. This directly strengthens the argument that children share more with family members when observed by someone they recognize as an authority. This is a strong point that supports the psychologist's argument.C. The siblings were younger and appeared to need help understanding how to use the toys, compared to non-siblings who were adept at using the toys.
This statement suggests that the increased sharing with siblings might be due to the siblings' need for assistance rather than the presence of an authority figure. This weakens the psychologist's argument by providing an alternative explanation for the behavior.
D. The room had more toys available than usual, making it easier for children to find and share multiple toys.
This statement suggests that increased sharing could be due to the abundance of toys rather than the presence of an authority figure. It doesn't directly support the idea that being observed by an authority figure increases sharing with siblings specifically.
E. The adult explicitly encouraged the children to share, regardless of whether the other child was a sibling or a non-sibling.
If the adult explicitly encouraged sharing, it would imply that the observed behavior might be influenced by direct instructions rather than the presence of an authority figure per se. This weakens the argument because it provides another reason for the sharing behavior that is not related to the authority figure's mere presence.
Conclusion:
The answer choice that most strengthens the psychologist's argument is:
Option BB. The observing adult was a parent of the siblings, rather than a stranger or non-relative adult.
This is because it directly supports the notion that the children are more likely to share with family members when they feel they are being observed by a familiar authority figure, specifically their parent.