Marijuana and tobacco cigarettes: Estimating their behavioral economic relationship using purchasing tasks

Area of Science:

• Behavioral Economics
• Substance Use Research
• Public Health Policy

Background:

• Marijuana and tobacco are frequently used together, but their economic relationship remains unclear.
• Behavioral economics principles have not been applied to understand the co-use of marijuana and tobacco.

Purpose of the Study:

• To investigate the economic relationship between marijuana and tobacco cigarette consumption using behavioral economics.
• To determine if marijuana and tobacco act as substitutes, complements, or independent goods.

Main Methods:

• Recruited U.S. adults (N=82) who used both marijuana and tobacco.
• Utilized online purchasing tasks to assess hypothetical puff consumption across various price points.
• Conducted single-commodity and cross-commodity tasks to measure demand elasticity.

Main Results:

• Both tobacco and marijuana consumption decreased significantly with price increases in single-commodity settings.
• Demand for one commodity was independent of the price of the other when both were available.
• No evidence of substitution or complementarity between marijuana and tobacco cigarettes was found.

Conclusions:

• In this sample, marijuana and tobacco cigarettes function as independent economic goods.
• Preliminary findings suggest distinct demand patterns for each substance.
• Results can inform future research on substance co-use in evolving policy environments.