Body-oriented Interventions on Preschoolers' Social-emotional Competence

Primary outcomes

1. Change in Emotion discrimination

   Time frame: 1 and 12 weeks

   Emotion discrimination was measured through the Emotion-discrimination Task. This measurement consists in two performance tasks of increasing difficulty. In the task 1 (neutral condition) children were tested on their ability to discriminate between cars and flowers, and faces with hats versus faces with glasses. This neutral condition is not scored, since is used to check if children understood how to sort different cards. In task 2, children had a sheet in front of them with a sample drawing of one category in the top left corner (e.g. an angry face) and a drawing of the other category in the top right corner (e.g. a sad face). Then, children have six cards (with the same emotion) and one by one they have to place each card in the correct category after a demonstration. The cards that were placed correctly were counted with 1 point, with a maximum of 3 points.

2. Change in Emotion identification

   Time frame: 1 and 12 weeks

   Emotion identification was measured through the Emotion-identification Task. The task consists of eight drawings of facial emotion expressions, two for each emotion (happiness, sadness, fear, and anger). Then the researcher show two sheets with four drawings of facial emotion expressions on each sheet and ask to the children: "Who looks happy?", and children have to point to the drawing with the correct facial expression. Next, the researcher ask if "Is there anybody else who looks happy?". This procedure is repeated for anger, sadness, and fear. The number of emotions correctly identified was recorded, with a maximum score of 2 per emotion.

3. Change in Emotion recognition

   Time frame: 1 and 12 weeks

   Emotion recognition was measured thought the subscale Others' Emotion Recognition (6 items) of the Portuguese version of the Emotion Expression Questionnaire. This Subscale indicates the extent to which the child can recognise the parents' and others' emotions. Parents can rate to what degree each item is true on a 5-point scale (0=(almost) never, 1=rarely, 2=sometimes, 3=often, 4=(almost) always).

4. Change in Positive and negative emotion expression

   Time frame: 1 and 12 weeks

   Positive emotion expression, and negative emotion expression was measured through the Negative Emotion Expression subscale (8 items) and Positive Emotion Expression subscale (6 items) from the EEQ. Parents scored on a 5-point scale (0=(almost) never, 1=rarely, 2=sometimes, 3=often, 4=(almost) always), the frequency, intensity, and duration of child's expressions of negative emotions (e.g., anger, sadness), and positive emotions (e.g., happiness, joy). The extent to which the child can calm down from the emotional episode was also measured (1=easy; 3= difficult).

5. Change in Self-regulation

   Time frame: 1 and 12 weeks

   Self-regulation was measured through the Portuguese version of Head-Toes-Knees-Shoulders Task (HTKS). Using no materials, the HTKS has three sections with up to four paired behavioral rules: "touch your head" and "touch your toes"; "touch your shoulders" and "touch your knees". Child first respond naturally, but then had to perform the opposite of a dominant response (e.g., touch your head when the interviewer says "touch your toes"). This task includes three phases (each with 10 trials), and for each trial, the child received a score of 0 (incorrect), 1 (self-correct), or 2 (correct).

6. Change in Stress regulation

   Time frame: 2 days

   Stress regulation was measured through cortisol levels (mcg/dL) was quantified in saliva samples collected at the same time and in the same place where the interventions occurred, before and after the 1st and 24th sessions. Samples were collected directly from each child's mouth, without stimulation, by passive droll during 5 minutes to a polyethylene tube.

7. Change in Social competence

   Time frame: 1 and 12 weeks

   Social competence was obtained through the prosocial behaviors scale (5 items), and positive items from the peer problems scale (2 items) of the Portuguese version of Strengths and Difficulties Questionnaire (SDQ). Rated on a 3-point scale (0 = not true, 1 = somewhat true, and 2 = certainly true) the degree to which each item represented child's behavior in the last 3 months.

8. Change in Externalizing problems

   Time frame: 1 and 12 weeks

   Externalizing problems was obtained also through the behavior problems scale (5 items), and hyperactivity scale (5 items) of the Strengths and Difficulties Questionnaire (SDQ). Rated on a 3-point scale (0 = not true, 1 = somewhat true, and 2 = certainly true) the degree to which each item represented child's behavior in the last 3 months.

9. Change in Conflicts resolution

   Time frame: 1 and 12 weeks

   Conflicts resolution was measured through the conflict resolution strategies subscale (6 items) of the Portuguese version of Social Strategies Rating Scale (SSRS). Administered to teachers, which rated on a 5-point scale (1=never, 3=half of the time, 5=almost always) how often the child uses the social strategies during interactions with peers on preschool context.