The theoretical perspective that the researcher is associated with is behaviorism.
The term behaviorism is the theoretical perspective that opines that the behavior of the individual could be controlled by conditioning. The term conditioning refers to the use of punishments versus reinforcement to mold human behavior.
Behaviorism is one of the earliest perspectives in psychology and continues to hold sway in the discipline today.
Hence, from the description in the question, the theoretical perspective that the researcher is associated with is behaviorism.
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