Measures
The following English-version scales were used. The Mindful Attention Awareness Scale (MAAS) is a 15-item scale that was used for the measurement of mindfulness, it assesses awareness and attention to day-to-day experiences using a scale from 1 to 6, where 1 represents almost always, and 6 represents Almost never. The final score is the mean of the 15 items. A higher score indicates a better level of mindfulness. The scale shown good validity and reliability [The questionnaires were provided to the participants online. In order to minimize missing data, the online questionnaires were designed to ensure that all items must be answered before the participant could move to the next page. The attendance rate to the weekly sessions was monitored by self-reporting the number of sessions attended in the post-test questionnaires (time 1), and the participants were reminded weekly through e-mail.