Table 1.

Inclusion and exclusion criteria for the 3 groups of the participants being recruited in the multicenter observational study (mHealth Methods in Mental Health Research project).

Groups	Inclusion criteria	Exclusion criteria	Site of recruitment
High mental well-being	No history of emotional distress for at least a year PHQ-4a score: <3 and SWEMWBSb score: ≥30	Cognitive impairment or damage, including presence or history of head trauma, dementia, or intellectual disability (IQ ≤80) History of schizophrenia or other psychotic spectrum disorders Problems understanding Spanish or Catalan	University campus (UABc)
Mild to moderate psychological distress	Recent history of mental health issues PHQ-4 score: 3-8 or SWEMWBS score: 20-29	Cognitive impairment or damage, including presence or history of head trauma, dementia, or intellectual disability (IQ ≤80) History of schizophrenia or other psychotic spectrum disorders Problems understanding Spanish or Catalan	University campus (UAB)
Mental health condition	Diagnosed with current depression or anxiety by a mental health professional	Cognitive impairment or damage, including presence or history of head trauma, dementia, or intellectual disability (IQ ≤80) History of schizophrenia or other psychotic spectrum disorders Problems understanding Spanish or Catalan The symptomatology has an organic origin or is owing to the physiological effects of a substance Presence of acute suicidal ideation Being medicated	Mental health services (INAD-PSMARd or HSJDe)

^aPHQ-4: Patient Health Questionnaire-4.

^bSWEMWBS: short version of Warwick-Edinburgh Mental Well-being Scale.

^cUAB: Autonomous University of Barcelona.

^dINAD-PSMAR: Institute of Neuropsychiatry and Addictions-Parc de Salut Mar.

^eHSJD: Hospital Sant Joan de Déu.