Which of the Following Is True of Descriptive Studies

question 12

Multiple Choice

Which of the following is true of descriptive studies?

• A) Manipulation of the independent variable is the core element of true descriptive studies.
• B) The utility of descriptive studies is directly dependent on the quality of the instruments or assessments used to describe a phenomenon.
• C) In these studies, a researcher neither actively forms groups or conditions through random or nonrandom assignment, nor actively manipulates an independent variable.
• D) Descriptive studies can confirm causal connections among the variables in consideration.

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Definitions:

Oxygen-carrying Capacity

The maximum amount of oxygen that can be carried in the blood, mainly determined by the hemoglobin concentration.

Thrombin

An enzyme in blood plasma that causes the clotting of blood by converting fibrinogen to fibrin, playing a central role in hemostasis.

Universal Recipient

A term commonly used to describe individuals with AB positive blood type, who can receive red blood cells from any other blood type.

Blood Type

A classification of blood based on the presence or absence of inherited antigenic substances on the surface of red blood cells, significant for blood transfusions.