80) When the ratio of negative to positive comments on social media about the new Diet Pepsi
was worse than is usually found with new products, PepsiCo conducted causal research to
understand their consumers’ behavior.
81) If you want to change your GPA (independent variable), you must change certain dependent
variables such as amount of time devoted to study, class attendance, reading your text, and
listening while in class.
82) A field experiment involves manipulating the independent variable and measuring the
dependent variable in a natural setting.
83) An extraneous experiment involves manipulating the independent variable and measuring the
dependent variable in an artificial setting contrived to control extraneous variables.
84) Laboratory experiments are desirable when the intent of the experiment is to achieve high
levels of internal validity.