Table 2.

Psychology and Aging: Social Science Citation Index Impact Factors and Rankings, 1989-2004

		Rank
Year	Impact factor	Psychology,developmental	Gerontology
1986	No impact factor
1987	No impact factor
1988	No impact factor
1989	1.519	5 of 27	2 of 10
1990	1.444	5 of 28	2 of 12
1991	1.551	5 of 27	3 of 12
1992	1.622	5 of 26	3 of 12
1993	1.507	6 of 29	2 of 11
1994	1.824	7 of 32	2 of 11
1995	1.857	6 of 36	3 of 16
1996	1.883	7 of 39	3 of 18
1997	1.946	6 of 49	3 of 26
1998	1.808	8 of 48	2 of 26
1999	2.664	5 of 48	2 of 25
2000	2.308	8 of 49	2 of 23
2001	2.019	9 of 47	3 of 23
2002	1.991	9 of 49	5 of 24
2003	3.074	6 of 51	3 of 23
2004	2.837	6 of 49	4 of 24