Telling the truth when tempted to lie can significantly improve a person's mental and physical health, according to a study presented at the American Psychological Association's 120th Annual Convention. Researchers say recent evidence indicates that Americans average about 11 lies per week. They found that the study participants could purposefully and dramatically reduce their everyday lies, and that in turn was associated with significantly improved health.
Approximately half the participants were instructed to stop telling major and minor lies for 10 weeks. The other half served as a control group that received no special instructions about lying. Over the course of 10 weeks, the link between less lying and improved health was significantly stronger for participants in the no-lie group, the study found. For example, when participants in the no-lie group told three fewer white lies than they did in other weeks, they experienced on average about four fewer mental-health complaints, such as feeling tense or melancholy, and about three fewer physical complaints, such as sore throats and headaches, the study found. In contrast, when control group members told three fewer white lies, they experienced two fewer mental-health complaints and about one less physical complaint.
In weeks when participants told fewer lies, they reported that their close personal relationships had improved and that their social interactions overall had gone more smoothly that week, the study revealed. Statistical analyses showed that this improvement in relationships significantly accounted for the improvement in health that was associated with less lying.
At the end of the 10 weeks, participants in the no-lie group described their efforts to keep from lying to others in their day-to-day interactions. Some said they realized they could simply tell the truth about their daily accomplishments rather than exaggerate, while others said they stopped making false excuses for being late or failing to complete tasks. Others said that they learned to avoid lying by responding to a troubling question with another question to distract the person.