61. Researchers have come to a consensus; to explain violent behavior ____.

1. in terms of physical environment
2. from a biological perspective
3. based on the empirical data
4. in a statistical way

62. When we say that antisocial and criminal behavior tends to run in families, as indicated by the recent findings, we can probably mean that ____.

1. a particular gene is passed on in families
2. child abuse will lead to domestic violence
3. the male victims of child abuse will pass on the tendency
4. the violent predisposition is exclusively born of child abuse

63. The recent observation implicated that to check the development of antisocial and criminal behavior ____.

1. boys are to be screened for the biological predisposition
2. high-risk kids should be brought up in kindergarten
3. it is important to spot the genes for the risk factors
4. active measures ought to be taken at an early age

64. To defend the argument against the unfavorable idea, the author makes it a point to consider ____.

1. the immeasurable value of the genetic research on behavior
2. the consequences of compromising democracy
3. the huge cost of improving parenting skills
4. the greater cost of failing to intervene

65. Which of the following can be the best title for the passage?

1. Parenting Strategies for Kids
2. The Making of a Criminal
3. Parental Education
4. Abusive Parenting

(Reference keys.)