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The findings show that gratitude and optimism are positive psychological dispositions associated with beneficial outcomes.
People in a recent study who were more grateful had lower blood pressure and heart rate, as well as greater feelings of appreciation toward others.
Study: Optimism and Gratitude Linked to Health?
The study, published in the journal Emotion, finds that optimism was also linked to health and mental benefits, such as better sleep quality and more positive expectations and reflections.
Researchers examined these traits through a cell phone app called MyBPLab with embedded sensors that measured blood pressure and heart rates of 4,825 participants from around the world including the United States, Australia, India, and Hong Kong. Previous studies on gratitude and optimism often involved laboratory visits or brain scans for data collection.
The optic sensors send different light waves through the tissue to detect changes in blood volume and an algorithm in the phone is used to calculate blood pressure. To have accurate blood pressure levels, the user calibrates the phone sensor against an external arm cuff.
Respondents reported stress levels, health behaviors (sleep, exercise, daily expectations), and thoughts three times a day for 21 days from March 15, 2019, until December 8, 2020. They rated 12 items such as “I have so much in life to be thankful for” and “In uncertain times, I usually expect the best.”
Gratitude and Optimism Have Beneficial Outcomes?
The findings show that gratitude and optimism are positive psychological dispositions associated with beneficial outcomes. Gratitude highlighted the positive aspects of the day, whereas optimism minimized the negative aspects of the day, the study indicates.
“Gratitude also orients people toward others and the benefits they have bestowed to them, whereas optimism may orient people to themselves as they focus on their own specific future,” says Amie Gordon, the study’s coauthor and assistant professor in the University of Michigan’s psychology department.
The findings also contradict the researchers’ hypothesis that higher optimism would be associated with forward-looking responses and interpretations of positive events. Optimism predicted the ratings of the unpleasantness of the worst part of the day—a backward-looking response focused on a negative event, the study shows.
Highly Optimistic People
David Newman, the study’s lead author and postdoctoral scholar of psychiatry at the University of California, San Francisco, says highly optimistic people were likely to think their worst part of the day was relatively less unpleasant than were less optimistic people.
In addition, optimism was a better predictor of sleep quality and stress frequency and intensity than gratitude.
“Our findings provide important advances to our understanding of gratitude and optimism by showing that gratitude contributes to accentuating the positive aspects of the day, whereas optimism functions by minimizing the negative aspects of the day,” he says.
Source: University of Michigan, Original Study
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