Final answer:
A study on the synchronization of menstrual cycles among women suggests that pheromones, particularly axillary steroids, might play a role in human behavior by affecting the perception and biological responses of individuals on a subconscious level.
Step-by-step explanation:
One study that highlights the role of pheromones in human behavior observed the phenomenon of menstrual cycle synchronization among women. Pheromones, specifically axillary steroids, are chemical signals secreted by individuals that trigger a response in other members of the same species. In humans, these chemicals can influence the perception of others and are thought to lead to biological responses such as the synchronization of menstrual cycles. The study on cycle synchronization suggests that women who spend a significant amount of time together may start to see their menstrual cycles align, potentially due to the unconscious perception of pheromones.
The existence and the exact role of pheromones in human communication continue to be debated and researched. However, studies like the menstrual cycle synchronization illustrate the potential subtle effects pheromones can have on human behavior. Unlike other odorants, pheromones are not consciously perceived but rather, they act on a subconscious level to affect behavior and physiological responses.