The article continues to illustrate various components of leadership and how they are presented in the literature with Obama's and Clinton's leadership styles and campaign messages as the focal point. For example, the article mentions that Barack Obama's winning Democratic Party Nominee Elections campaign, his change message in particular, was far superior in 2008 from an ethical standpoint. This seems to be a fairly loaded assumption that is difficult to test empirically.
He contrasts Clinton's campaign as a more top down approach based on her political life that allowed her to mingle constantly with the political elite. By contrast, Obama's career formed from a more bottom up approach in he worked as a community organizer in Chicago. It is noted that transformational leadership can be facilitated by the level of trust in the leader. Therefore, based on these criteria, it is assumed that Obama's level of trust based on his bottom up career development would be higher and more legitimate among the populace. Although this seems like a reasonable statement, it is still highly speculative without any empirical analysis being conducted on the two candidates.
The actual experiment works to test some of the hypotheses that were generated in the literature review. The independent and dependent variables were measured with a survey that used the Likert Scale to measure responses. The study concludes that the leadership styles of Obama and Clinton are striking different. Barack Obama was perceived as a transformational leader while Clinton was perceived more as a transactional leader. Although I intuitively agree with the study's findings, the evidence that is presented is subject to some skepticism. There are a plethora of limitations that the study had to overcome to be able to test the hypothesis. One obvious one was the sample size. Another limitation that the author alludes to is the cultural variables of the sample which oversimplifies culture into either East or West categories as opposed to more specific geographies. Although I found the article interesting, I'm not sure that it adds significant value to the study of leadership.