Table 3.

Intercorrelations for scores on mood, motor, and neuropsychological measures

Measure/Index	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19
1. GDS	–
2. UPDRS-III	.05	–
3. MDRS	−.22	−.30	–
4. Dysphoria	.54	−.10	.11	–
5. Hopelessness	.22	.05	−.42	−.24	–
6. W-A-Va	.82	.15	−.22	.48	−.05	–
7. Anxiety	.70	.03	−.17	.35	.29	.40	–
8. Cogn. Imp.b	.70	.01	−.13	.08	.36	.32	.41	–
9. Gait–balance	.14	.72	−.24	−.22	−.01	.20	−.01	.21	–
10. Tremor	.03	.30	−.21	.10	−.16	.28	.02	−.22	.16	–
11. Rigidity	−.20	.70	−.09	−.28	−.14	−.05	−.04	−.16	.44	.20	–
12. Bradykinesia	.11	.86	−.28	.07	.19	.10	.08	.04	.41	.07	.38	–
13. Dyskinesia	−.15	−.06	.06	−.43	.44	−.26	−.16	.17	.03	−.48	−.14	.09	–
14. WCST CC	−.06	−.55	.46	.33	−.21	−.13	.04	−.22	−.46	−.12	−.32	−.48	−.17	–
15. WCST PE	.06	.52	−.58	−.28	.30	.10	−.00	.14	.36	.09	.31	.51	.08	−.89	–
16. CVLT-II 1–5	−.04	−.32	.31	.30	−.50	.03	−.04	−.16	−.36	−.13	−.17	−.23	−.20	.31	−.25	–
17. Letter fluency	−.15	−.28	−.02	.08	−.13	−.06	−.17	−.17	−.08	−.12	.00	−.39	−.09	.23	−.27	.17	–
18. Category fluency	−.17	−.44	.30	.21	−.17	−.14	.05	−.39	−.49	−.32	−.07	−.36	−.10	.51	−.43	.44	.56	–
19. JLO	−.13	.01	.06	.00	.09	−.04	−.25	−.19	.09	−.03	−.13	.03	.34	.16	−.14	−.01	.30	.19	–

Notes: Numbers 4–8 = GDS factors; numbers 9–12 = UPDRS Part III factors; number 13 = UPDRS Part IV item; numbers 14–19 = neuropsychological measures. Absolute r-values ≥0.35 and ≤0.43 = p < .05; absolute r-values ≥0.44 and ≤0.51 = p < .01; absolute r–values ≥0.52 = p < .001.

^aWithdrawal-apathy-vigor factor of the GDS.

^bCognitive impairment Factor of the GDS.