Table 1.

General Stereotypy Rating Scale

Score	Description
0	Asleep, still, (no locomotion) with normal grooming
1	Normal locomotion and exploration with normal pattern of sniffing and grooming
2	Hyper-locomotion with repetitive exploratory behaviors, rearing, or increased rate of sniffing and grooming
3	Discontinuous sniffing and grooming with periodic locomotion and/or rearing
4	Continuous compulsive sniffing, rearing, and/or grooming without locomotion

Stereotypy scores were made every 15 s during the entire 30 min session immediately following drug administration. Scoring procedure for stereotypy modified from Szumlinski et al., (Szumlinski et al., 2000). Note that scores of 3–4 represent stereotypy whereas scores of 1 and 2 represent normal ambulatory activity and hyperlocomotor ambulatory activity, respectively.