Trust through the fragrance of lavender

Could the calming fragrance of lavender have a positive effect on mutual trust?

Cotswold Lavender

Trust game

Aromatherapists say that aromatic compounds can alter one’s mood, cognitive, psychological or physical wellbeing. “Mutual trust is the social glue of society,” says researcher Roberta Sellaro. “Interpersonal trust is an essential element for social cooperation, bargaining and negotiation.”

To determine the effect of olfactory fragrances, Sellaro and her fellow researchers exposed one test group to the aroma of lavender, while a second group smelled the aroma of peppermint.

>> The art of aromatherapy to soothe and heal

Subsequently, the test persons played a trust game, a task that is often used to measure how much one test person trusts the other. A trustor was given 5 euros and was free to decide how much of that money he would give to a trustee in each round of the game. The trustor would then receive extra money, but only if the trustee gave him enough money in return. The money transferred to the trustee by the trustor served as an indicator of mutual trust.

Inexpensive way to increase trust

Test persons gave significantly more money to the other person when they were exposed to the aroma of lavender, compared to persons who had been exposed to the fragrance of peppermint.

“Our results might have various serious implications for a broad range of situations in which interpersonal trust is an essential element,” says Sellaro. “Smelling the aroma of lavender may help a seller to establish more easily a trusting negotiation to sell a car, or in a grocery store it may induce consumers to spend more money buying products. The smell of lavender may also be helpful in sport psychology, to enhance trust and build team spirit, for example, in the case of team games such as soccer and volleyball.”

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