Table 1.
Summary of Motor-Skill Learning Studies Using the Pursuit Rotor Task in Patients with Schizophrenia
| Huston and Shakow (1949) | Goldberg et al. (1993) | Granholm et al. (1993) | Clare et al. (1993) | Schwartz et al. (1996) | Kern et al. (1997) | |
|---|---|---|---|---|---|---|
| version | contact | contact | photoelectric | not specified | contact | photoelectric |
| Design | 2 blocks of 5-10-sec trials | 3 blocks of 5–20-sec trials | 6 blocks of 4–20-sec trials | 5 blocks of 6–20-sec trials | 6 blocks of 4–20-sec trials | 6 blocks of 4–20-sec trials |
| N | SC = 122 NC = 60 | 24 discordant and 7 normal twin pairs | SC/TD+ = 7 SC/TD− = 4 NC = 11 | SC = 11 NC = 12 | elderly SC = 20 elderly NC = 20 young SC = 20 young NC = 20 | SC = 18 NC = 15 |
| RPM | 60 | 30 and 60 | 45 | 30 | elderly SC 40.50 elderly NC 48.75 young SC 47.25 young NC 56.25 | SC = 37.2 NC = 62.7 |
| Trial 1 matched? | No | No | No | No | Yes | Yes |
| IQ matched? | No | No | No | No | No | No |
| Overall difference? | SC < NC | SC = NC | SC = NC | SC < NC | SC < NC | SC = NC |
| Slope difference? | not specified | not specified | SC = NC | SC = NC | SC < NC | not specified |
(SC) Patients with schizophrenia; (NC) normal control participants; (SC/TD+) patients with schizophrenia and tardive dyskinesia; (SC/TD−) patients with schizophrenia without tardive dyskinesia.