Table 7.

Literature Comprising Meta-Analysis for Fitts’ Law Slope Constant Estimation

Study	n	Mean age	Ages sampled	Fitts’ law slope constant (ms/bit)	SE (ms/bit)
Chaparro, Bohan, Fernandez, Choi & Kattel (1999)	10	70	65–75	177	24
Ketcham, Seidler, Van Gemmert & Stelmach (2002)	15	68	62–74	190	22
Liao, Jagacinski, & Greenberg (1997)	40	65	60–69	163	38
McCrea & Eng (2005)	20	61	55–67	198	33
Rogers, Fisk, McLaughlin, & Pak (2005)	40	59	51–65	159	32
Romero, Van Gemmert, Adler, Bekkering, & Stelmach (2003)	15	68	53–80	179	34
Walker, Philbin, & Fisk (1997)	16	70	65–75	178	32
Welford (1958)	30	70	65–75	179	24
Worden, Walker, Bharat & Hudson (1997)	16	70	65–75	181	30
Weighted mean parameter estimate	202	67	51–80	175	163–199*

Note. n = number of participants in age range of interest per study.

^*Values represent plus or minus two standard deviations of means.