In an Experiment Investigating the Hypothesis That Aerobic Exercise Improves

question 236

Multiple Choice

In an experiment investigating the hypothesis that aerobic exercise improves concentration and memory, all the participants had an equal chance of being assigned to any of the three conditions in the study. The researchers used _____ to minimize the possibility of bias when assigning participants to the different groups.

• A) the practice effect
• B) random assignment
• C) the single-blind technique
• D) the double-blind technique

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Definitions:

Embryonic Stage

A critical phase in development that occurs from the second to the eighth week after fertilization during which major organs and structures within the body begin to form.

Major Organs

Essential organs within an organism that perform critical functions necessary for life, such as the heart, brain, lungs, liver, and kidneys.

Age Of Viability

The stage of fetal development at which the fetus has the capability to survive outside the uterus with medical support, typically around 24 weeks of gestation.

Prematurely

Occurring or done before the usual or proper time; too early.