Caffeine enhances sustained attention among adolescents

Area of Science:

• Neuroscience
• Adolescent Psychology
• Cognitive Science

Background:

• Limited experimental research exists on caffeine's impact on adolescent sustained attention.
• Existing literature primarily focuses on adult caffeine use and attention.

Purpose of the Study:

• To evaluate the acute effects of caffeine on sustained attention in adolescents.
• To determine if caffeine attenuates vigilance decrements in a long-duration task.

Main Methods:

• 31 adolescents (aged 12-17) participated in a 33-minute vigilance task.
• Participants consumed placebo, 1 mg/kg, or 3 mg/kg caffeine across three counterbalanced sessions.
• Performance was measured by percent hits on low-probability targets.

Main Results:

• Caffeine significantly attenuated the decline in target detection over time compared to placebo.
• Higher caffeine doses (3 mg/kg) led to earlier improvements in attention.
• Improvements were observed in later blocks of the task, suggesting sustained attention enhancement.

Conclusions:

• Caffeine acutely and dose-dependently improves sustained attention in adolescents.
• The observed effects are likely due to caffeine's attention-enhancing properties, not withdrawal reversal.
• This research provides a basis for future studies on chronic caffeine consumption in adolescents.