Answer: Child-rearing methods
Step-by-step explanation:
The child-rearing method is one of the type of parenting in which the it helps in developing the various types of emotional and also the children intellectual development.
The child rearing method is basically refers to the parenting technique that helps in determining the different types of relationship the parents have with their children.
According to the given question, Dr Rojo is basically conducting the various types of longitudinal study that helps in influence the child rearing method based on the given situation.
Therefore, Child-rearing methods is the correct answer.