Figure 2: Paradigm case formulation of "family"
- Paradigm case: A husband and his wife living with their natural children, who are a seventeen-year-old son and a ten-year-old daughter.
T1. Eliminate one parent but not both.
T2. Change the number of children to N, N > 0.
T3. Change the sex distribution of children to any distribution other than zero boys and zero girls.
T4. Change the ages of the children to any values compatible with the ages of the parents.
T5. Any combination from T1, T2, T3, and T4.
T6. Add any number of additional parents.
T7. Add adopted and other legally defined sons and/or daughters.
T8. Eliminate the requirement of living together.
T9. Change the number of children to zero if husband and wife are living together.
Note that constructing a paradigm case formulation calls for careful decisions and the exercise of judgment in regard to which cases to include or exclude. Disagreement may arise among different persons. For example, T6-T9 seem much more likely to elicit objections ("I wouldn't call that a family!") than T1-T5.
Ossorio, 2006; pp. 26-27.
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