Ashlee is a researcher interested in whether boys or girls grow more as a result of eating high-protein breakfast cereal.She has a control group from St.Thomas Academy in Boston that eats regular cereal and an experimental group from an all-girls school in Wichita that eats a high-protein cereal.She then measures the growth of each group at three-month intervals.Although Ashlee manipulates variables in her study, it is not a true experiment because it lacks ________.
A)a dependent variable
B)a research question
C)random assignment
D)naturalistic observation

Question

Quizplus · Accepted Answer

Ashlee's study lacks random assignment, which is crucial for a true experiment. Random assignment helps ensure that each participant has an equal chance of being placed in either the control or experimental group, minimizing biases and differences between groups.

Ashlee Is a Researcher Interested in Whether Boys or Girls