Julie and her friends were making the long drive home after a fun day at the amusement park. they were about half way home when julie noticed that she was so tired, she could barely stay awake. however, she knew it was her responsibility to get her friends home safely. she was then motivated to do anything that would keep her awake. julie's tiredness can be referred to as ; the theory of motivation the to which this scenario is referring is called the

Julie and her friends were making the long drive home after a fun day at the amusement park. They were about half way home when Julie noticed that she was so tired, she could barely stay awake. However, she knew it was her responsibility to get her friends home safely. She was then motivated to do anything that would help keep her awake. Julie's tiredness can be referred to as a drive ; the theory of motivation the to which this scenario is referring is called the drive reduction theory.

i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.