Sophia, a human factors engineer, is designing a field exper…

Sophia, a human factors engineer, is designing a field experiment.  Based on her past experience working in manufacturing industries, she hypothesizes that mandatory stretch breaks improve employee morale.  What should Sophia use as her independent variable? Should her independent variable be within subjects or between subjects?  Why?

Mike works 2nd shift at Bulldog Brewing Co. He works on the…

Mike works 2nd shift at Bulldog Brewing Co. He works on the loading dock, placing cases of finished goods onto pallets, which are then placed onto delivery trucks. Half way into his shift, Mike damaged a case of finished goods. The case was sitting on an electric conveyer. Mike bumped into the activation switch, which started the conveyer and sent the case off the conveyor onto the floor at the end of the line. How would you classify Mike’s error?