The participants will complete the scale measurements after receiving the four levels of the REThink Life game, each focusing on an emotion regulation skill and an associated assessment system.

REThink Life is a therapeutic game developed by David and collaborators (2019) and it is composed of four levels, each training a different emotion regulation ability (emotion recognition, mindfulness, distinguishing between rational and irrational thoughts, and positive attention bias).

The Cognitive Emotion Regulation Questionnaire (CERQ-short) is an 18-item scale assessing nine different emotion regulation strategies, namely Self-blame, Other-blame, Rumination, Catastrophizing, Positive refocusing, Planning, Positive reappraisal, Putting into perspective and Acceptance. Children and adolescents were asked to express the frequency of using each strategy on a 5-point Likert-type scale, from 1 ("almost never") to 5 ("almost always"). Higher scores on adaptive strategies (e.g., positive reappraisal, refocus on planning, positive refocusing, putting into perspective, acceptance) are equivalent to a better outcome (more adaptive coping). Higher scores on maladaptive strategies (e.g., rumination, catastrophizing, self-blame, other-blame) are equivalent to worse outcomes (less adaptive coping).

The Strengths and Difficulties Questionnaire (SDQ) is a brief behavioural screening questionnaire for children aged 2 to 17 years old, encompassing emotional symptoms, conduct problems, hyperactivity/inattention, peer relationship problems, and prosocial behavior.

Total difficulties score: Sum of all subscales except Prosocial → Range: 0 to 40. Prosocial score is reported separately → Range: 0 to 10. Higher scores on total difficulties and the four problem subscales are equivalent to worse outcomes. Higher scores on the prosocial subscale are equivalent to better outcomes.

The Adolescent Stress Scale (ADOSS) will be used to capture students' level of stress in the following domains: personal, academic, family, and social. Total score ranges from 20 to 100, with higher scores indicating higher levels of stress.