ICT	Information and Communication Technologies
WHO	World Health Organization
DSM-5	Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition
PIU	Problematic Internet Use
BMHD	Bioecological Model of Human Development
IAM	Internet Addiction Model
I-PACE	An Interaction of Person-Affect-Cognition-Execution
UCJC	Universidad Camilo José Cela
IGD	Internet Gaming Disorder Multidisciplinary
EG	Experimental Group
CG	Control Group
CBT	Cognitive Behavioral Therapy
SMA	Social Media Addiction
DMUD	Digital media-use disorders
IUD	Internet Use Disorder
GAS	Game Addiction Scale; NODS-CLiP
IGD-20	Test: Internet Gaming Disorder Test
YSR/11–18	Youth Self-Report for Ages 11–18
CBCL/6–18	Child Behavior Checklist for Ages 6–18 Years
MACI	Expressed Concern Scales of the Millon Adolescent Clinical Inventory
TMMS-24	Trait Meta-Mood Scale
EHS	Escala de Habilidades Sociales
WATOCI	Satisfaction with the treatment. The Working Alliance Theory of Change Inventory
CSAS	Computerspielabhäng-igkeitsskala
SCL-90-R	Symptom Checklist-Revised
STAI	State-Trait Anxiety Index
DQVMIA	Diagnostic Questionnaires for Video Games, Mobile Phone or Internet Addiction
S-MASS	Social Media Addiction Screening Scale
GADIS-A	Gaming Disorder Scale for Adolescents
SOMEDIS-A	Social Media Disorder Scale for Adolescents
STREDIS-A	Streaming Disorder Scale for Adolescents
SDQ	Strength and Difficulties Questionnaire
PSQI	Pittsburgh Sleep Quality Index
ESS-CHAD	Epworth Sleepiness Scale-Children and Adolescents
PSS-10	Perceived Stress Scale
FCS	Family Communication Scale
MAAS-5	Mindfulness Attention Awareness Scale
CIAS	Chen Internet Addiction Scale
SAS	Self-rating Anxiety Scale
SDS	Self-rating Depression Scale
BISS-11	Barrat Impulsiveness;
fMRI	functional Magnetic Resonance Imaging
GD	Game-related outcome
C-RIGC	Revised Internet Gaming Cognition Scale
PHQ-9	Patient Health Questionnaire
GAD	Generalized Anxiety Disorder