Table 1.

Inclusion/Exclusion criteria

Inclusion criteria:

■ Current use of marijuana 1-10 times per month

■ Normal or corrected to normal vision

■ Age 18-40 years

■ Negative pregnancy test (females)

■ Negative drug screen for Phencyclidine, Benzodiazepines, Cocaine, Amphetamines, Opiates, and Barbiturates

Exclusion criteria:

■ Naive to use of marijuana

■ Use of methamphetamine, cocaine, opiates, ecstasy, mushrooms, sleeping pills or any injected of inhaled drug of abuse more than 5 times in life or within the prior three months

■ History of significant medical problems such as diabetes, heart disease, or respiratory disorders

■ Use of medications other than birth control or acne medication