From 1932 Through 1978, IQ Scores Increased by an Average

question 227

Multiple Choice

From 1932 through 1978, IQ scores increased by an average of ________ points per decade.

• A) 9
• B) 20
• C) 15
• D) 3

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Definitions:

Synapse

The junction between two neurons or a neuron and a muscle, through which nerve impulses pass.

Otto Loewi

Otto Loewi was an Austrian-German pharmacologist who won the Nobel Prize for Medicine in 1936 for his discovery of the chemical transmission of nerve impulses.

Neurotransmitter

Chemical substances that transmit signals across a synapse from one neuron to another in the nervous system.

Receptors

Proteins found inside or on the cell surface that respond to specific chemical signals by initiating a cellular response.