Understanding Experiments with Two Groups - Answer Key
Twenty Sets $1 =$

question 63

Short Answer

Understanding Experiments with Two Groups - Answer Key
Twenty sets of depressed twins are obtained for a study on the effects of a new antidepressant. In each twin set, one twin is assigned to receive the drug, and the other is designed to receive the placebo. Three months later, depression levels are measured on a scale from 1 (not at all depressed) to 7 (very depressed). The following data was obtained:
GROUP $1 =$ Received drug
GROUP $2 =$ Received placebo
Variable $=$ Depression level
$\begin{array} { l l l l } \text { GROUP } & N & \text { Mean } & S D \\ \text { GROUP 1 } & 10 & 3.21 & 1.035 \\ \text { GROUP 2 } & 10 & 5.77 & 1.772 \\ t = 5.785 & d f = 9 & p = 0.017 & \text { Cohen's } d = .88 \end{array}$
-What kind of research design was used?

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Interpersonal Skills

The ability to communicate, interact, and work effectively with others through understanding and empathy.

Empowerment

The process of granting authority or power to individuals or groups, enabling them to make decisions and take action.

Delegation

The act of assigning responsibility and authority to someone else to complete a task while maintaining accountability for the outcome.

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A long-term plan of action designed to achieve a particular goal or set of goals or objectives within an organization.