Researchers decide to measure depression by evaluating the participants' levels of the neurotransmitter serotonin. The operational definition for depression is the ____________.
A)depression
B)level of serotonin
C)researcher
D)participant

Question

Quizplus · Accepted Answer

The operational definition for depression in this study is the level of serotonin, as it is the specific, measurable factor researchers are using to quantify or assess depression.

Researchers Decide to Measure Depression by Evaluating the Participants' Levels