An Experimental Group Listened to 10 Minutes of a Mozart

question 314

Multiple Choice

An experimental group listened to 10 minutes of a Mozart sonata, a control group listened to 10 minutes of relaxation to instructions, while the other control group listened to silence. The Mozart group performed much better on a subsequent test of spatial abilities than the two control groups. The results of this experiment are not valid because

• A)10 minutes is an inadequate amount of time.
• B)There could be confounding variables.
• C)The amount of time is not indicated for the group who listened to silence.
• D)There are two control groups.

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Definitions:

Phenotype Frequencies

The proportion of various phenotypes in a given population, often impacted by genetic and environmental factors.

MN Blood Types

A blood group system based on the presence or absence of the M and N antigens on the surface of red blood cells.

Hardy Weinberg Principle

A principle that describes how allele and genotype frequencies in a population remain constant from generation to generation in the absence of evolutionary influences.

Antigens

Substances that are recognized by the immune system and can provoke an immune response, typically proteins or polysaccharides found on pathogens.