Identify 2 flaws in the research methodology using the six issues (Reactivity , Social desirability bias/positive impression management, unrepresentative or biased sample, Confounding variable, Lack of control group, Validity of the measures) 

 

Please explain in detail the flaw and give an example from the text. 

  

E RESEARCH DESCRIPTION So, you want to be Bradley Cooper in Limitless? Well, now you can! Introducing the Wonderdrug NZT-48 By NZT Pharmaceutical It has been said that we only use 10% of our brains. Have you wondered what you could accomplish if you unlocked your brain's full potential and use 102% of your brain? Well, now you can! NZT Pharmaceuticals is delighted to introduce our new drug NZT-48. NZT-48 has been in development for 48 years and our secret blend of ingredients has been associated with using more of your brain to help reach your potential! Just today, NZT released the results of a stunning 2 year-long study by independent scientists with no ties to NZT Pharmaceuticals. The company claims that the study, which was conducted with 100,000 people shows the powerful and life-altering effects of NZT-48. In this study, the research team selected 100,000 people from Canada who despite their high levels of IQ and aptitude, were stuck in their dead-end jobs with low pay, and with no hope for upward movement. When NZT came calling, these 100,000 participants from an initial pool of 200,000 individuals volunteered to take part in the study to test the effects of a new experimental drug NZT-48. Each week, participants were given 2 doses of NZT-48, and to maximize the effects of NZT-48, they were asked to engage in various real-world problem-solving skills