Table 1 Outcome measures

 Primary outcomes

  Resilience, resilience scala (RS14)

x

  Existence or absence of depressive symptoms (RBDI)

x

  Experienced psychological strenghts and difficulties (SDQ)

x

x

x

 Secondary outcomes

  Mindfulness (CAMM)

x

  Happiness (OECD Better life Index)

x

  Satisfaction with life (SWLS-C)

x

  Quality of life (KINDL-R)

x

x

  Positive and negative affects (PANAS)

x

  The Rumination-Reflection Questionnaire

  Stress in Children (SIC Qestionnaire)

  Compassion/self-kindness)

x

 NEPSY-II (Developmental Neuropsychological Assesment)

x

 WISC-IV (Wechsler Intelligence Scale for Children)

x

 D-KEFS (Delis-Kaplan Executive Function System)

x

 Psychological flexibility (CERQ)

x

 Viivi, 5-15 questionnaire on child development

x

 SCR (Skin conduct response)

x

 EKG (Electrocardiography)

x

 Grade average in the last school report

x

x

 Grades in last school report

x

x

 Satisfaction with ow achievements

x

 Days of absence from school

x

 Bullying at school

x

 Physical activity

x

 Sleeping/tiredness

x

 Alcohol use

x

 Smoking

x

 Screen time

x

 Outcome expectations

x

 Use of strategies to relax

x

 Self-efficacy

x

 Intention/motivation

x

Class room social environment (CES)

x

x

Personality inventory (TIPI)

x

 Experienced major difficulties in life

x

 The quality of social relationship with peers

x

 Major changes in student's life

x

 The emotional athmospere at home

x

x

 The relationship with mother

x

 The relationship with father

x

 Financial situation in the family

x

 Family composition

x

 Mother tongue

x

x

 Parent education

x

 occupation

x

 Employment status

x