Question

while conducting experiments to study the effect of humor on stressed students, it was found that exposing students to humorous videotapes raised the level of which substance in their saliva?

corticosteroids

cortisol

adrenocorticotropic hormone

immunoglobulin a

Explanation:

Humor has been shown to boost the immune system. Immunoglobulin A (IgA) is an antibody that plays a crucial role in the immune system, especially in mucosal areas like the mouth. When students are exposed to humorous videotapes, it can raise the level of immunoglobulin A in their saliva, which helps in fighting off infections. Cortisol and corticosteroids are stress - related hormones that would likely decrease with humor exposure (as humor reduces stress), and adrenocorticotropic hormone stimulates the production of cortisol.

Answer:

immunoglobulin A