A Research Study on a Group of Children with Autism

question 176

Multiple Choice

A research study on a group of children with autism will compare treatment delivered by parents at home to treatment delivered by teachers at school. If the study finds that the treatment delivered at school is more effective, which item is the BEST example of a confounding variable?

• A) The treatment
• B) The children
• C) The diagnosis
• D) Differences between the parents and teachers

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Definitions:

Rifting

The process of the Earth's crust being pulled apart, leading to the formation of rift valleys and potentially new ocean basins.

Subsidence

The gradual sinking or settling of an area of land, which can be caused by natural processes or human activities.

Continental Platform

A broad region that surrounds the continental shield and typically exposes horizontal to gently dipping sedimentary rocks.

Crystalline Basement

The crystalline (metamorphic and igneous) rocks that underlie sedimentary and volcanic rocks in an area; widely exposed in the continental shield.