They had all previously

They had all previously signed up for a white-water rafting trip on Utah’s Green River, sponsored by a charitable organisation. Before and after the trip, they were questioned about their general psychological wellbeing – including their feelings of stress and their capacity to cope with life’s challenges. After each day of rafting, the participants were asked to complete a questionnaire that measured their feelings of awe, amusement, contentment, gratitude, joy and pride.