SK Jewellery is looking to launch a new advertising campaign for their necklace line. They have decided to launch a new print advertisement featuring the famous Korean K-Pop actress Blackpink's Rosé, but they are unsure whether she should wear a blue or green diamond necklace to increase consumer attitudes toward the advertisement. You are required to devise an experiment to compare consumer attitudes toward an advertisement for the two (2) different necklace colours.  
 
(a) State the Decision Maker's Purpose. 
 (b) What is the independent and dependent variable in this study? 
 (c) W rite a hypothesis proposing the relationship between the independent and dependent variables.
 (d) If you were required to design the two (2) stimuli to be used in this experiment, explain the elements of the stimuli that would be kept constant (controlled), and explain the elements that you would change (manipulate). 

 (e) Should a field experiment or a lab experiment be conducted to test the relationships between the variables? Why? 
 (f) Identify at least one (1) extraneous variable that may influence the results. 
 (g) Comment on both the internal and external validity of the experiment. Which would be higher in the proposed experiment and why?