The study indicates that research has shown how personalities are formed, and how they can be changed, but she does not show specific examples of her research when it comes to changing beliefs and people who have drastically changed their personalities. It would have been more interesting and enlightening if she could have given a concrete example of a person who changed their personality by changing their beliefs, although she does use some student studies that indicate the group has a whole had personality changes when their instructors behaved in certain manners. A specific, detailed example would have helped make the concept clearer and easier to understand, however.

The implications of the research are that personalities are not rooted in the genes and are unable to change. That means that people who have negative personality traits can work on their core beliefs and change their personalities, and that is interesting and insightful research. Practically, this...

It is clear this author is an expert at researching personality, and has conducted many studies in the area, so the research seems relevant and correct, and the author's assumptions about belief systems and personality seem correct. It would be nice to see more concrete examples, however, to fully make the author's point and to help the student fully understand where her assertions came from and how they worked.
References

Dweck, Carole S. "Can Personality be Changed?" Psychological Science.org. 2007. 23 March 2009. http://www.psychologicalscience.org/journals/cd/17_6_inpress/Dweck.pdf.