Which psychophysical indicator may suggest someone is under the influence of cannabis?

Poor coordination and balance is an important psychophysical indicator that may suggest someone is under the influence of cannabis. When a person consumes cannabis, it can impair their motor skills and ability to coordinate movements effectively. This impairment may manifest as a lack of stability while walking, difficulty in performing tasks that require precision, and an overall decrease in motor function, which can be especially noticeable during activities that require balance.

Cannabis affects areas of the brain responsible for coordination and motor control, leading to these observable signs. While other options may also be associated with substance influence, poor coordination and balance specifically highlight the physical effects of cannabis on the body, making it a key indicator. Factors such as reaction time and responsiveness can diminish, further emphasizing the impact on balance and coordination, which law enforcement and trained personnel look for during impairment assessments.