What Are the Three Types of Evidence a Research Seeks

question 57

Essay

What are the three types of evidence a research seeks when testing causal hypotheses? Explain.

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Definitions:

Sound Waves

Vibrations that travel through the air or another medium and can be heard when they reach a person's or animal's ear.

Ultrasound

High-frequency sound waves that are reflected off a fetus or an internal organ to provide information to generate a computer image.

Fetus

A developing mammal or human from the end of the embryo stage (usually from nine weeks after fertilization in humans) until birth.

Sperm Cell

The male reproductive cell capable of fertilizing an ovum to produce offspring.