Answer:
Sociological research supports this belief.
Step-by-step explanation:
Various sociological researches proof that the thinking and mind of humans is influenced by the society in which a person lives. Various other studies show the nature of humans where they tend to practice or act by looking and learning from other individuals. Children often tend to learn more by looking at others. Hence, the fear of parents that having delinquent friends might be a trouble for their children is in fact true and supported by various psychological researches.