Andrea Is Told That the Means of Two Groups in a Study

question 56

Multiple Choice

Andrea is told that the means of two groups in a study were statistically significant. She knows the means and standard deviations of the two groups and is interested in calculating an estimate of effect size. Given this information, which effect size estimate should she calculate?

• A)F
• B)Effect size r
• C)Cohen's d
• D)Alpha

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Definitions:

Gross Motor Skills

Gross motor skills involve the movements of large muscles in the body, such as walking, running, and jumping.

Brain Development

The process of growth and maturation of the brain, which starts in utero and continues into early adulthood, involving changes in structure, function, and connectivity.

Myelination

The formation of a myelin sheath around the nerve fibers, which increases the speed and efficiency of electrical signals in the nervous system.

Peripheral Slowing Hypothesis

The theory that suggests that overall processing speed declines in the peripheral nervous system with increasing age.