Dr. garonski is testing his hypothesis that people use hand gestures more in communication when emotionally aroused than when calm. when his results were reviewed, it was noted that dr. garonski sometimes missed seeing small gestures in the calm condition. this is an example of the

The answer is confirmation bias.

Explanation:

Confirmation bias is considered a tendency to search for, interpret, as well as recall information to confirm one's most important personal beliefs. People usually show this bias when they remember some information selectively.

This can also happen when people interpret the information through a biased way. People usually interpret ambiguous evidence through their existing position. Aspects like biased search, interpretation, and memory are used to describe attitude polarization, belief perseverance, as well as illusory correlation.    

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.        

the aksumite empire was an ancient kingdom located in what is now northern ethiopia from the period of 100 ad to 940 ad. its capital was the city of aksum. the kingdom established itself as one of the 4 great powers at its time, along with persia, rome, and china.

the kingdom was rich in goods like gold, iron, and salt. it established strong commercial ties with the regions governed by rome, egypt, and persia (arabia). aksum was a key location in this commercial network. trade was also facilitated with the introduction of the aksumite currency.