Walter and joanna have been trying to have a baby for over a year. walter's aunt rae tells them not to worry because a friend of her neighbor's daughter had the same problem and then had two children in rapid succession. walter and joanna are more inclined to see a specialist rather than rely on aunt rae's advice because it reflects:

Walter and Joanna are more inclined to see a specialist rather than rely on Aunt Rae's advice because it reflects perceiving order in random events.

Explanation:

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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