Answer:
operational definition
Explanation:
Operational Definition: This is a term used to describe the course of action of the research variables and the study. In this experiment, laugh can be defined operationally as a smile with a sound. Because of this operational definition, the psychologists can replicate the research or the experiment. The operational definition, when used to collect data, consists of a clear, and detailed definition of a measure.
The following president who only served one term was John Adams
I believe the answer is: Defeated
The defeated group in hetherington's term refers to the people who are failing in maintaining the marriage commitment with their partner.
The problems that caused the failure mostly come from either emotional issues or personal issues between the couples.
