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?

Understand the formation and impact of the National Black Feminist Organization and its response to black power and feminist movements.

Identify key events of the civil rights movement, including the Orangeburg Massacre.

Recognize the cultural influence of the Black Arts Movement and its appreciation for John Coltrane's music.

Analyze the Moynihan report and its controversial claims regarding the black community.

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