(a) "Dysfunctional family" means a parent or parents or an adult or adults and a child or children living together and functioning in an impaired or abnormal manner so as to cause substantial physical or emotional danger, injury or harm to one or more children thereof regardless of whether such children are natural offspring, adopted children, step children or unrelated children to such parents.
(b) "Home-based family preservation services" means services dispensed by the department of human services or by another person, association or group who has contracted with the department of human services to dispense such services when such services are intended to stabilize and maintain the natural or surrogate family in order to prevent the placement of children in substitute care. There are two types of home-based family preservation services and they are as follows:
(1) Intensive, short term intervention of four to six weeks; and
(2) Home-based, longer term after care following intensive intervention.