A Psychologist Is Completing a Naturalistic Observation Study of Children's

Multiple Choice

A psychologist is completing a naturalistic observation study of children's aggressive behavior on a playground.She says that aggression is "any verbal or physical act that appears to be intended to hurt or control another child." She then goes on to list specific examples.It appears that the psychologist is attempting to establish a(n) :

A) good relationship with the children.
B) variable.
C) observational definition.
D) operational definition.