The Short-Term Memory Capacity (Digit-Span)in a Normal Adult Is About

question 29

Multiple Choice

The short-term memory capacity (digit-span) in a normal adult is about:

• A)9 items.
• B)7 or 8 items.
• C)4 or 5 items.
• D)14 or 15 items.

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Definitions:

Electromagnetic Radiation

A form of energy that is propagated through space or through a material medium in the form of electromagnetic waves, such as light, radio waves, and X-rays.

Ultraviolet Waves

Electromagnetic waves with wavelengths shorter than visible light, harmful to skin and eyes but essential for Vitamin D synthesis in humans.

Organic Compounds

Chemical compounds primarily made of carbon atoms bonded with other elements such as hydrogen, oxygen, and nitrogen, found in all living organisms.

Hydrocarbons

Organic compounds consisting entirely of hydrogen and carbon, found in fossil fuels and as a major component of petroleum and natural gas.