Achievement tests are to aptitude tests as KNOWLEDGE is to POTENTIAL.
Hawaii is very similar to Southeast Asia. I lived in Okinawa, Japan, actually, and the Ryukyu islands are very similar to the Hawaiian islands in the Pacific.
It is called experimenter bias
experimenter bias refers to the cognitive bias that held by researchers that might cause them to subconsciously influence the outcome of the experiment.
The most likelt cause of this bias is a situation where experimenters held a certain belief or expectation for the outcome of the experiment.
