Final answer:
According to psychologist John Cacioppo, people feel lonelier when they feel disconnected from others and have limited social interaction, not when they have a strong support network or spend less time on social media.
Step-by-step explanation:
According to psychologist John Cacioppo, people are lonelier when they feel disconnected from others and have limited social interaction. Having a strong support network of friends and family and an active social life both online and offline can help reduce feelings of loneliness. Spending less time on social media is not necessarily a factor that affects loneliness.