Discuss the advantage that large family has over smaller family

The advantage that a large family has over a smaller family is that when the large family's children grow up, they'll have more people to work and earn money. Also, when large families are feeling low, there's always someone there to talk to you. People in large families also get more attention since they have uncles, grandparents, aunts, cousins, neices, parents, and children.

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.        

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