Let's identify and correct the errors in the passage step by step:

1. **to children** should be **children**.
- Corrected: "preventing children from turning over to crime."

2. **turning over to crime** should be **turning to crime**.
- Corrected: "preventing children from turning to crime."

3. **family** should be **families**.
- Corrected: "children from better-off families were compared with ones who from families with lower incomes."

4. **ones who from** should be **ones from**.
- Corrected: "children from better-off families were compared with ones from families with lower incomes."

5. **that lived** should be **who lived**.
- Corrected: "Children from both groups who lived with their fathers also committed the same number of crimes."

6. **of comparing** should be **comparing**.
- Corrected: "In the United Kingdom, a study was carried out comparing a group of boys who had never been accused of not any crimes such as assault and stealing vehicles."

7. **not any crimes** should be **any crimes**.
- Corrected: "a group of boys who had never been accused of any crimes such as assault and stealing vehicles."

8. **at the school** should be **at school**.
- Corrected: "All the boys had difficulties at school and came from large families that didn't earn a lot of money."

9. **between from the groups** should be **between the groups**.
- Corrected: "The biggest difference between the groups was that fifty-five percent of the 'good boys' lived with their fathers, while only four per cent of the 'bad boys' did it."

10. **did it** should be **did**.
- Corrected: "while only four per cent of the 'bad boys' did."

11. **well – behaved** should be **well-behaved**.
- Corrected: "Eighty per cent of the well-behaved boys said how they felt close to their fathers even if they didn't live in the same house."

12. **said how** should be **said that**.
- Corrected: "Eighty per cent of the well-behaved boys said that they felt close to their fathers even if they didn't live in the same house."

13. **by having** should be **that having**.
- Corrected: "It seems that having a father who takes an interest in his children encourages youngsters not to break the law."

Here is the corrected passage:

We can tend to think of poverty as the main cause of violent crime. However, research from both sides of the Atlantic shows that fathers may be the most important factor in preventing children from turning to crime. In the United States, children from better-off families were compared with ones from families with lower incomes. Children from both groups who lived with their fathers also committed the same number of crimes. In the United Kingdom, a study was carried out comparing a group of boys who had never been accused of any crimes such as assault and stealing vehicles. All the boys had difficulties at school and came from large families that didn't earn a lot of money. The biggest difference between the groups was that fifty-five percent of the "good boys" lived with their fathers, while only four per cent of the "bad boys" did. Eighty per cent of the well-behaved boys said that they felt close to their fathers even if they didn't live in the same house. It seems that having a father who takes an interest in his children encourages youngsters not to break the law.