What changes have taken place in selfenhancement scores

Reference no: EM131009442

In the chapter we saw a study by Trzesniewski et al. (2008) on trends in narcissism scores over time. They also reported data on self-enhancement, which is the tendency to hold unrealistically positive views of oneself. The measure of self-enhancement (SelfEn) was obtained by asking students to respond on a 1-10 scale rating their intelligence relative to others. The researchers then calculated the difference between the rating predicted from SAT scores and the rating the student gave. The data are presented below. Positive scores represent self-enhancement.

Year	1976	1977	1978	1979	1980	1981	1982	1983	1984	1985	1986	1987	1988	1989	1990
SelfEn	2.06	2.03	.00	2.01	.07	.06	.04	.03	.03	.03	.03	.07	.06	.03	.03
Year	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005 2006
SelfEn	.04	.01	2.01	2.02	.02	.05	.00	.01	2.01	2.02	2.06	2.08	2.10	2.11	2.08 2.08

(a) From these data can we say something about what changes have taken place in selfenhancement scores of college students over the years?

(b) With several hundred thousand students in the combined sample, the authors of the original study actually based their analyses on individual scores rather than yearly means to make the same computation. They found a correlation of 2.03, which differs considerably from your result. Why is this not surprising?

Reference no: EM131009442

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