Mindfulness-based Program for Children With Disruptive Behavior Disorder

Change in impulsiveness

Time Frame: One week before the start of the intervention, one week after the end of the intervention.

Matching Familiar (MF-20) test from Italian Battery for ADHD (Marzocchi, Re, \& Cornoldi, 2010). In the Matching Familiar Figures (MF) test, participants are shown a figure and are asked to find the matching one among six choices. This task measures the children's impulsiveness. The MF test includes 20 items. Clinicians sum children's score in accuracy and latency time to arrive at one reported value, that is the children's impulsiveness score.

Change in Aggressive behaviors

Time Frame: One week before the start of the intervention, one week after the end of the intervention.

Modified Overt Aggression Scale The MOAS (Kay et al., 1988) is a clinician administered scale that measures four types of overt aggression over the past week: verbal aggression, physical aggression against property, auto-aggression, and physical aggression against other people.

Change in behavioral problems at school

Time Frame: One week before the start of the intervention, one week after the end of the intervention.

Strengths and Difficulties Questionnaire Strength and Difficulties Questionnaire (SDQ) is one of the most frequently used behavioral rating scale in educational, research, and clinical settings for assessing emotional and behavioral patterns in childhood. This 25-item questionnaire measures psychological adjustment in 3- to 16-year-olds in five subdomains. Of these, four subscales measure difficulties (conduct problems, hyperactivity, emotional problems, and peer relational problems), while the fifth measures strengths (prosocial behavior). There are three versions of the scale (a parent, teacher, and self-report).

Change in Behavioral problems at home

Time Frame: One week before the start of the intervention, one week after the end of the intervention.

Child Behavior Check List It is a 118 item standardized format, completed by parents for recording behavioural problems and skills in children 6 to 18 years of age. The 118 behaviour problem items are aggregated in eight different subscales related to both Internalizing and Externalizing domains.

Change in sustained attention capacities

Time Frame: One week before the start of the intervention, one week after the end of the intervention.

Bells Test Revised The Bells Test revised (Biancardi \& Stoppa, 1997) is a test for the evaluation of sustained attention in children. The test is an adaptation of Gauthiers's Bell Test used to assess neglect in adults. The Bells Test has been modified in order to make it suitable to research in developmental age. Items are organized in four different pages, which include each 35 bells. Speed and Accuracy in selecting the target stimuli (bells) are assessed. The Speed score refers to the number of bells found by the child in the first 30 seconds of the task, while the Accuracy score refers to the total number of bells found during the whole task (120 seconds).