Doses of each drug were administered according to a Latin square design (8 sequences, counterbalanced) with one day of washout (no behavior) and one day of baseline performance between each dose, and one week of baseline sessions between each drug. All drugs were prepared fresh daily, dissolved in 0.9% sterile saline and administered at a volume of 1 mL/kg, i.p. The assessed drugs were amphetamine (0.0, 0.3, 0.6 and 1.0 mg/kg doses, 10 min prior to testing, sourced from Sigma; (54 (link))), atomoxetine (0.0, 0.1, 0.3 and 1.0 mg/kg doses, 15 min prior to testing, sourced from Tocris; (55 (link))), and amantadine (0, 10, 20, 40 mg/kg doses, 15 min prior to testing, sourced from Sigma, dosing based on (35 )).