Operational definition: Subjects were scored with respect to maternal behavior of mammals according to whether they were observed engaging in any of the identified behaviors (nest-building, infant retrieval, infant licking, nursing) in a 10-minute observation period. Animals engaging in 2 –5 bouts of any of the behaviors were scored as “moderate maternal;” animals engaging in more than 5 bouts were scored as “high maternal;” animals engaging in less than 2 bouts were scored as “low maternal.”
The measurement was ___________ and the method was ___________.
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