The technique to improve internal validity is D) Addition of a control group.
<h3>What is
internal validity?</h3>
Internal validity serves as the study which bring about the establishment of a trustworthy cause-and-effect relationship that can be found in treatment and an outcome.
it should be noted that Internal validity also helps to eliminate alternative explanations , hence, The technique to improve internal validity is D) Addition of a control group.
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COMPLETE QUESTOIN:
Which of the following is a technique to improve internal validity ____________?
A) Experimenter expectancy
B) Participant bias
C) Use of a confederate
D) Addition of a control group
the answer is 318 because that is the answer 318
318
Answer: The two hyperboles in this excerpt are: "I'll never forget you as long as I live" and "the mine is worth far more than he asks for it".
Explanation:
The given statement "dual innervation is the term used to describe an organ that receives both sympathetic and parasympathetic motor impulses" is TRUE.
<h3>
What is dual innervation?</h3>
Dual innervation refers to an organ's ability to receive both sympathetic and parasympathetic motor impulses. Sympathetic responses are extensive throughout the body, which is partially explained by the fact that a single sympathetic preganglionic fiber may synapse with 20 or more postganglionic fibers.
Examples of organs with dual innervation include the heart and the eye.
The parasympathetic system slows heart rate whereas the sympathetic system speeds it up.
While the parasympathetic system causes the pupil of the eye to constrict, the sympathetic system causes the pupil to enlarge.
The heart and lungs have separate innervations.
The vagus nerve's impact on the pacemaker cells of the heart has a tiny probability of affecting the rate and force of heart muscle contraction.
Therefore, the given statement "dual innervation is the term used to describe an organ that receives both sympathetic and parasympathetic motor impulses" is TRUE.
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