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The Pelotas Trial of Parenting Interventions for Aggression

Evaluation of Two Parenting Interventions Focussed on Improving Conditions for Development in Early Childhood and Prevention of Violence in a Medium-Sized City in the South of Brazil

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
REBEC
Registry ID
RBR-2kwfsk
Enrollment
Unknown
Registered
2018-06-06
Start date
2018-06-18
Completion date
Unknown
Last updated
2025-10-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Aggression

Interventions

It is a randomized controlled trial with three arms. Given the nature of the educational interventions, it is not possible to blind participants and people delivering interventions. Participants will

Sponsors

Programa de Pós-Graduação em Epidemiologia
Lead Sponsor
Prefeitura Municipal de Pelotas
Collaborator
Faculdade de Medicina - Universidade Federal de Pelotas
Collaborator

Eligibility

Age
2 Years to 3 Years

Inclusion criteria

Inclusion criteria: child born in 2015 in Pelotas city; mother lives in the household; mother consents to participate in the study; mother is the primary caregiver of the child; mother lives in the child’s house at least 4 nights per week; family income is in bottom 30% at child age 2-years

Exclusion criteria

Exclusion criteria: child with low aggression score at age 2-years old; child with serious developmental delay at age 2-years; child with other medical condition preventing participating in activities targeted by interventions; mother has a medical condition preventing participating in intervention activities

Design outcomes

Primary

MeasureTime frame
Expected outcome 6. Evaluate the reduction in child aggression at 6-month follow-up, when children are approximately aged 4-years; assessed by questionnaires (Child Behavior Checklist, ELDEQ study questionnaire) and observational tasks (LABTAB, Don’t Touch, and Clean up), with an independent statistician calculating the final latent variable(s) of aggression for analysis; reduced aggression will be identified based on a statistically significant lower level of child aggression in the intervention groups compared with the control group, adjusting for baseline variables

Secondary

MeasureTime frame
Expected outcome 1. Evaluate the reduction in child chronic stress levels (for both the book-sharing and ACT interventions), assessed via cortisol levels in hair samples; reduced child chronic stress will be identified based on a statistically significant higher level in the intervention groups compared with the control group, adjusting for baseline variables;Expected outcome 2. Evaluate the reduction in parental reported stress (for both the book-sharing and ACT interventions), assessed via the Perceived Stress Scale and Pelotas questions on parenting stres; reduced parental reported stress will be identified based on a statistically significant lower level in the intervention groups compared with the control group, adjusting for baseline variables;Expected outcome 3. Evaluate the reduction in parental chronic stress levels (for both the book-sharing and ACT interventions), assessed via cortisol levels in hair samples; reduced parental chronic stress will be identified based on a statistically significant lower level in the intervention groups compared with the control group, adjusting for baseline variables;Expected outcome 4. Evaluate the increase in positive parenting (for both the book-sharing and ACT interventions), using the PAFAS questionnaire, and videotaped sensitivity and reciprocity during book-sharing and free play parent-child interactions; increased positive parenting will be identified based on a statistically significant higher level in the intervention groups compared with the control group, adjusting for baseline variables;Expected outcome 5. Evaluate the reduction in parental attitudes about corporal punishment (for the ACT intervention), assessed via parental reports on the Deater-Deckard Study Questionnaire; reduced parental favourable attitudes about corporal punishment will be identified based on a statistically significant lower level in the intervention group compared with the control group, adjusting for baseline variables;Expected outcome

Countries

Brazil

Contacts

Public ContactSilvia Pinto

Programa de Pós-Graduação em Epidemiologia

imprensa.epi@gmail.com+55-053-32841300

Outcome results

None listed

Source: REBEC (via WHO ICTRP) · Data processed: Mar 3, 2026