Savor-Aging: the Art of Savoring Positive Emotions

This scale was designed by Diener and colleagues (1985; Italian version: Di Fabio & Busoni, 2009) to investigate life satisfaction and consists of 5 items that can be answered through a 7-step Likert scale ranging from 1 "strongly disagree" to 7 "strongly agree."

This self-report scale consists of 12 items and was developed by Diener and colleagues (2010; Italian version: Corno, Molinari, & Baños, 2016) to measure positive and negative affect. It is composed of two sub-scales: the first refers to positive emotions (6 items: positive, good, pleasant, happy, joyful, satisfied) and the second to negative emotions (6 items: negative, bad, unpleasant, sad, fearful, angry). It can be answered through a 5-step Likert scale where 1 means "very rarely or never" and 5 means "very often or always."

This scale, developed by Ryan and Deci (2001; Italian version Di Fabio, 2010), aims to investigate the elements that make up psychological well-being, including relationships, self-esteem, life purpose and optimism. It consists of 8 items and each is positively worded and responses are measured on a 7-step Likert scale, where 1 means "strongly disagree" and 7 means "strongly agree." The score range is from 8 to 56.

This self-report scale, developed by Jong-Gierveld and van Tilburg (2006), assesses through 6 items social loneliness, which occurs when an individual lacks a larger social network, and emotional loneliness, caused by the lack of more intimate relationships. For each statement, the participant must express his or her degree of agreement on a 5-point Likert scale, where 0 means "Absolutely true" and 4 means "Absolutely not true" A higher score corresponds to a lower perception of social and emotional loneliness. For the purpose of this study, the items were translated into Italian from the original 6-item English version.

Developed by Radloff (1977), it is a 20-item self-report scale used as a screening tool for depression in the elderly. For the purpose of this study, the 10-item short version, validated by Andersen and colleagues in 1994, will be used. Participants will be asked to indicate on a 5-step Likert scale, where 0 corresponds to "never or almost never" (less than 1 day), 1 corresponds to "sometimes or infrequently" (1-2 days), 2 corresponds to "occasionally or for a moderate amount of time" (3-4 days), and 4 corresponds to "most of the time or all of the time" (5-7 days), how they have been feeling in recent weeks. For the purpose of this study, the items have been translated into Italian.

• Item ad hoc to investigate perceived usefulness and pleasantness of the exercise just done. After each activity of the training, participants will be asked to rate perceived usefulness and pleasantness through a 7-step Likert scale where 1 corresponds to "very little" and 7 to "very much."

A 5-item questionnaire, scored on a 7-step Likert scale, where 1 corresponds to "not at all" and 7 to "very much," will be proposed, aimed at investigating the subject's experience of using the website. In particular, the degree of aesthetic pleasantness of the website, its functionality, and the ability to engage the user will be investigated.

The perceived usefulness of the training will be measured through a single item ("Referring to the entire training, how useful do you think it was for you?") that can be answered through a 7-step Likert scale where 1 corresponds to "very little" and 7 to "very much." In addition, there will be a section where it will be possible to express a reflection regarding the evaluation provided.

Two items ad hoc will be administered to investigate which exercise they found most useful and which was the most enjoyable, specifying their reasons. In addition, they will be optionally asked to express a general reflection on the exercise they did. These ad hoc items will be differentiated according to their group. In fact, for the experimental group, reference will be made to the exercises proposed in the e-savoring training, while for the control group, positive emotion induction activities will be reported. The aim of these final items is to understand which exercises were found most useful and enjoyable overall by the participants, both in the control and experimental groups, so as to take them into account for future studies.

Participants will be asked about the frequency with which they have put into practice in the last month the exercises experienced during the training for both the experimental and control groups.