Final answer:
Neuropsychological evidence shows that adolescent brains are not fully formed leading to impulsive decisions, whilst societal and environmental factors, such as peer pressure and societal norms, can encourage risk behaviours. Both these factors help in understanding teenagers' risk-taking in sexual activity and drug use.
Step-by-step explanation:
Evidence on adolescent decision-making can provide insight into risk-taking behaviours among teenagers such as sexual activity and drug use. Neuropsychological research shows that the brain's prefrontal cortex, which controls decision making and impulse control, is not fully developed until the mid-20s. This might lead to impulsive decision making, especially when peer pressure or emotional arousal is involved. Societal and environmental factors also play a significant role. Peer pressure, societal norms and media influence can encourage these risk behaviours.
Substance use risk is higher in environments where drugs are easily available and is normalized. Sex risk-taking may be influenced by societal norms and individual perceptions of what is 'normal' sexual behavior. In combination, both the neuropsychological and the societal/environmental factors can contribute to understanding teenagers' risk-taking behaviours.
Learn more about Adolescent Risk-Taking