When Experiments Are Used to Determine Whether Therapy Is Effective

question 145

Multiple Choice

When experiments are used to determine whether therapy is effective, the therapy can be deemed effective only if the

• A)control group shows improvement, but the experimental group shows none.
• B)experimental group shows improvement, but the control group shows no improvement.
• C)experimental group shows more improvement than the control group.
• D)waiting-list group will show dramatic improvement once in therapy.

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Definitions:

Seafloor Spreading

The process by which new oceanic crust is formed as magma rises to the surface at mid-ocean ridges and solidifies, pushing older crust away from the ridge.

Accretionary Prism

A wedge-shaped mass of sediment and rock scraped off the top of a downgoing tectonic plate at a convergent plate boundary, often leading to the formation of new land.

Volcanic Mountain Belt

A region typically found at convergent plate boundaries, characterized by a series of volcanoes formed from the melting of subducted lithosphere.

Crustal Extension

The process by which the Earth's crust is stretched and thinned, often associated with the formation of rift valleys and basins.