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Describe Why Non-Random Selection of Participants (E

question 13

Essay

Describe why non-random selection of participants (e.g., volunteers) poses such a high threat to the external validity of research studies in kinesiology.


Definitions:

Condoms

Barrier devices used during sexual intercourse to reduce the probability of pregnancy and the transmission of sexually transmitted infections (STIs).

HIV Infections

A condition caused by the human immunodeficiency virus, which attacks the immune system and can lead to AIDS if not treated.

Herpes Infections

Viral diseases caused by herpes simplex viruses, including oral and genital herpes.

Sexual Dysfunction

Disorders related to any phase of the sexual response cycle that prevent an individual or couple from experiencing satisfaction from sexual activity.

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