Table 1.

Mean Percent Correct for Unmedicated Patients, Medicated Patients and Healthy Controls in Tone Discrimination Test and WSPT

Variable	Unmedicated (n=38, 24 male)		Medicated (n=45, 25 male)		Controls (n=47, 23 male)		Statistic
	Mean	S.D.	Mean	S.D.	Mean	S.D.
Age (years)	31.4a	10.9	29.9a, b	7.4	26.6b	6.6	F(2, 127)=3.70*
Education (years)	13.9a	2.3	14.3a	2.7	16.3b	2.0	F(2, 127)=12.31***
Handedness (LQ)	65.2	41.5	74.9	33.4	77.2	19.25	F(2, 127)=1.61
Tone Ratio
.67	88.16	17.72	89.26	16.73	98.23	5.19
.75	89.04	19.48	89.63	16.78	99.29	3.40
.85	84.65	23.69	81.85	26.31	94.68	13.51
.90	69.30	36.25	78.89	25.48	91.13	18.99
.95	72.37	32.25	71.85	36.21	89.36	22.64
Total Correct	83.27a	19.72	83.32a	17.44	95.09b	9.25	F(2, 124)=7.90 **
WSPT Position
1	81.14	19.44	81.85	22.70	95.04	9.14
2	73.25	24.67	72.22	24.62	95.04	10.94
3	65.79	27.11	68.89	29.22	87.59	15.72
4	89.47	19.15	83.33	18.12	98.58	5.85
Total Correct	77.41a	16.40	76.57a	18.15	94.06b	6.77	F(2, 124)=20.47 ***

Note: WSPT = Word Serial Position Test, LQ = laterality quotient on Edinburgh Inventory. Means with different superscripts differ significantly at p < .05 using Student Newman -Keuls post hoc comparisons.

^*p<.05

^**p<.01

^***p<.001