Ths interactive tool, Comorbidity of child aggression tool, is based on M. Bartels, et al., “Childhood aggression and the co-occurrence of behavioural and emotional problems: results across ages 3–16 years from multiple raters in six cohorts in the EU-ACTION project”, European Child {&} Adolescent Psychiatry, 2018).
It shows comorbidities of child aggression, displaying results from questionnaires filled by multiple raters, in six cohorts in the EU-ACTION project”. It can be browsed by questionnaire (ATAC - CBCL - DCB - SDQ - MSNI) or by psychopathology.

Ths interactive tool, “Teacher Ratings Child Aggression tool”, (based on A. Whipp et al 2019, “Teacher-rated aggression and co-occurring behaviors among schoolchildren”, not published yet) has the overall objective of characterize the levels and associations of aggressive behavior and co-occurring behaviors in the school setting, by using teacher ratings of children at ages 7–14 from population based cohorts of children from Finland, the Netherlands, and the UK. It is made up by two parts and each of the two parts, can be browsed by questionnaire or by psychopathology:
- Tool part 1 - Teacher ratings child aggression
- Tool Part 2 - Teacher ratings child aggression correlation
 

Discover the ACTION goals and results in the project official video
 

ACTION is a collaborative project among eleven international partners, which has been selected by the European Commission as one of the projects funded under the 7th Framework Programme for Research, technological Development and Demonstration.
The project is funded under grant agreement no. 602768, sub-programme HEALTH.2013.2.2.1-3: "Paediatric conduct disorders characterised by aggressive traits and/or social impairment: from preclinical research to treatment".

Project objectives. ACTION aims to improve the understanding of the causes of individual differences in aggression among children in order to better inform the development of prevention and treatment strategies. The project will investigate current and diagnostic problems in paediatric aggression, including the differential expression of aggression as a function of gender, developmental stage, and patterns of comorbidity. It will reveal predictive outcome of childhood aggression by examining longitudinal trajectories in large scale longitudinal data.

ACTION will quantify the influences of genes and environment as a function of gender, age, birth cohort, and environmental modifiers; it will identify genomic regions of interest for aggression by means of a genome-wide association (GWA) studies;ACTION will apply and develop new methods to study gene-environment correlation and interaction by including measured genes and measured environment; it will select informative groups of children for inclusion in epigenetic and metabolomic biomarkers studies of paediatric aggression.

Aggression in identical twins. One of the ACTION's goals is to improve the understanding of the causes of individual differences in aggression among twins in order to better inform the development of prevention and treatment strategies. ACTION will combine twin samples and metabolomic biomarker data to establish direction of causation. As Yin and Yang are both complementary and opposite, also monozygotic twins have the same genetic heritage but can have different environmental influences that can make them distinguished: same genome but different epigenome, metabolome, phenome and diseasome.