NCT05908461

Brief Summary

The purpose of this study is to assess the impact of the Early Childhood Friendship Project (ECFP) on changes in aggression/peer victimization subtypes, prosocial behavior, and social and academic competence with a teacher-implemented (with coaching) version of the program. Further, investigators will examine whether changes in executive functioning, emotion regulation, and hostile attribution biases indirectly account for the program effects. Investigators will test if physiological reactivity (skin conductance and respiratory sinus arrhythmia) serves as moderators of intervention effects. Data will be collected from 600 children (30 randomly assigned preschool classrooms) diverse in socioeconomic status and race/ethnicity. Investigators will use multiple methods (school-based observations, direct academic assessments, child interviews, physiological reactivity using two tasks, observer, caregiver, and teacher reports) to assess the efficacy of the program, hypothesized mechanisms, and role of physiology as a moderator of intervention effects. The duration of the effects will be tested at both 4 month and 12-month follow-up and will thus demonstrate the impact the program has on children's school readiness and transition to kindergarten. It is expected that preschool children randomly assigned to the ECFP intervention relative to the control condition will show significant and moderate reductions in physical and relational aggression/victimization at post-test and follow-up; the ECFP intervention group will also show increases in prosocial behavior, social competence, and academic competence, relative to the control group at post-test and follow-up (4-months at the end of preschool and 12 months after transitioning to kindergarten). Additionally, it is hypothesized that changes in executive functioning, emotion regulation, and hostile attribution biases will mediate treatment effects from baseline to respective follow-ups. It is anticipated that these hypothesis will be moderated by gender such that effects will be stronger for girls relative to boys. Finally, it is hypothesized that physiological reactivity will act as a moderator of intervention effects and of the executive functioning, emotion regulation, and hostile attribution biases mechanisms.

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
600

participants targeted

Target at P75+ for not_applicable healthy

Timeline
11mo left

Started Aug 2023

Longer than P75 for not_applicable healthy

Geographic Reach
1 country

1 active site

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress76%
Aug 2023Apr 2027

First Submitted

Initial submission to the registry

May 25, 2023

Completed
24 days until next milestone

First Posted

Study publicly available on registry

June 18, 2023

Completed
2 months until next milestone

Study Start

First participant enrolled

August 16, 2023

Completed
3.7 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 16, 2027

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

April 16, 2027

Last Updated

October 3, 2025

Status Verified

September 1, 2025

Enrollment Period

3.7 years

First QC Date

May 25, 2023

Last Update Submit

September 29, 2025

Conditions

Outcome Measures

Primary Outcomes (32)

  • Observations of Physical Aggression (Early Childhood Observation System - Frequency Count up to 8 Sampling Sessions)

    Physical aggression will be assessed via focal child sampling with continuous recording observation for each participating child. Each observation is 10 minutes for up to 8 separate observations (i.e., frequency counts divided by number of sessions out of 8 sessions).

    Up to 12 weeks post-intervention completion.

  • Observations of Prosocial Behavior (Early Childhood Observation System - Frequency Count up to 8 Sampling Sessions)

    Prosocial behavior will be assessed via focal child sampling with continuous recording observations for each participating child. Each observation is 10 minutes for up to 8 separate observations (i.e., frequency counts divided by number of sessions out of 8 sessions).

    Up to 12 weeks post-intervention completion.

  • Observations of Relational Aggression (Early Childhood Observation System - Frequency Count up to 8 Sampling Sessions)

    Relational aggression will be assessed via focal child sampling with continuous recording observations for each participating child. Each observation is 10 minutes for up to 8 separate observations (i.e., frequency counts divided by number of sessions out of 8 sessions).

    Up to 12 weeks post-intervention completion.

  • Observations of Physical Victimization (Early Childhood Observation System - Frequency Count up to 8 Sampling Sessions)

    Physical victimization will be assessed via focal child sampling with continuous recording observations for each participating child. Each observation is 10 minutes for up to 8 separate observations (i.e., frequency counts divided by number of sessions out of 8 sessions).

    Up to 12 weeks post-intervention completion.

  • Observations of Relational Victimization (Early Childhood Observation System - Frequency Count up to 8 Sampling Sessions)

    Relational victimization will be assessed via focal child sampling with continuous recording observations for each participating child. Each observation is 10 minutes for up to 8 separate observations (i.e., frequency counts divided by number of sessions out of 8 sessions).

    Up to 12 weeks post-intervention completion.

  • Dynamic Indicators of Basic Early Learning (DIBELS) - Sound Fluency

    Sound fluency will be measured using the DIBELS - Sound Fluency measure. Scores are calculated as the correct initial sounds per minute, with higher scores indicating greater performance on this measure.

    Up to 4 months post-intervention completion.

  • Dynamic Indicators of Basic Early Learning (DIBELS) - Letter Naming Fluency

    Letter naming fluency will be measured using the DIBELS - Letter Naming Fluency measure. Scores on this measure range from 0 to 110, with higher scores indicating greater performance.

    Up to 4 months post-intervention completion.

  • Early Numeracy Skills: Set Comparison

    Early numeracy will be assessed using the task set comparisons. In this activity, a child is presented with four sets of dots representing different amounts and asked which has the most or fewest dots. A child's score is a sum of correct responses. Scores range from 0-6, with higher scores indicating stronger performance.

    Up to 4 months post-intervention completion.

  • Early Numeracy Skills: One-to-One Counting

    Early numeracy will be assessed using the task one-to-one counting. In this task, a child is presented with a set of dots and asked to count the set. A child's score is sum of correct responses. Scores range from 0 to 5, with higher scores indicating stronger performance.

    Up to 4 months post-intervention completion.

  • Early Numeracy Skills: Verbal Counting

    Early numeracy will be assessed using the task verbal counting. In this task, a child is asked to count as high as possible until the child makes a mistake or correctly counts up to 100. A child's score is a single score based on correct counting out of 100. Scores range from 1-7, with higher scores indicating stronger performance.

    Up to 4 months post-intervention completion.

  • Preschool Peer Victimization Measure - Teacher Report - Revised (PPVM-T-R): Relational Victimization Subscale

    Teachers will complete the PPVM-T-R Relational Victimization subscale to assess relational victimization. Raw scores are 4-20 with average scores on this measure ranging from 1-5, and with higher scores indicating higher levels of relational victimization.

    An average of 12 months post-intervention completion.

  • Preschool Peer Victimization Measure - Teacher Report - Revised (PPVM-T-R): Physical Victimization Subscale

    Teachers will complete the PPVM-T-R physical victimization subscale to assess physical victimization. Raw scores are 4-20 with average scores on this measure ranging from 1-5, and with higher scores indicating higher levels of physical victimization.

    An average of 12 months post-intervention completion.

  • Preschool Peer Victimization Measure - Teacher Report - Revised (PPVM-T-R): Physical Victimization Subscale

    Research assistant observers will complete the PPVM-T-R physical victimization subscale to assess physical victimization. Raw scores are 4-20 with average scores on this measure ranging from 1-5, and with higher scores indicating higher levels of physical victimization.

    Up to 12 weeks post-intervention completion.

  • Preschool Peer Victimization Measure - Teacher Report - Revised (PPVM-T-R): Relational Victimization Subscale

    Research assistant observers will complete the PPVM-T-R relational aggression subscale to assess relational victimization. Raw scores are 4-20 with average scores on this measure ranging from 1-5, and with higher scores indicating higher levels of physical victimization.

    Up to 12 weeks post-intervention completion.

  • Preschool Peer Victimization Measure - Teacher Report - Revised (PPVM-T-R): Physical Victimization Subscale

    Research assistant observers will complete the PPVM-T-R physical victimization to assess physical victimization. Raw scores are 4-20 with average scores on this measure ranging from 1-5, and with higher scores indicating higher levels of physical victimization.

    Up to 4 months post-intervention completion.

  • Preschool Peer Victimization Measure - Teacher Report - Revised (PPVM-T-R): Relational Victimization Subscale

    Research assistant observers will complete the PPVM-T-R relational victimization subscale to assess relational victimization. Raw scores are 4-20 with average scores on this measure ranging from 1-5, and with higher scores indicating higher levels of physical victimization.

    Up to 4 months post-intervention completion.

  • Preschool Social Behavior Scale - Teacher Report (PSBS-TR): Physical Aggression Subscale

    Teachers will complete the PSBS-TR physical aggression subscale to assess physical aggression. Raw scores are 6-30 with average scores on this measure ranging from 1-5, and with higher scores indicating higher levels of physical aggression.

    An average of 12 months post-intervention completion.

  • Preschool Social Behavioral Scale - Teacher Report (PSBS-TR): Relational Aggression Subscale

    Teachers will complete the PSBS-TR relational aggression subscale to assess relational aggression. Raw scores are 6-30 with average scores on this measure ranging from 1-5, and with higher scores indicating higher levels of relational aggression.

    An average of 12 months post-intervention completion.

  • Preschool Social Behavioral Scale - Teacher Report (PSBS-TR): Prosocial Behavior Subscale

    Teachers will complete the PSBS-TR prosocial behavior subscale to assess prosocial behavior. Raw scores are 4-20 with average scores on this measure ranging from 1-5, and with higher scores indicating higher levels of prosocial behavior.

    An average of 12 months post-intervention completion.

  • Preschool Social Behavioral Scale - Teacher Report (PSBS-TR): Relational Aggression Subscale

    Research assistant observers will complete the PSBS-TR relational aggression subscale to assess relational aggression. Raw scores are 6-30 with average scores on this measure ranging from 1-5, and with higher scores indicating higher levels of relational aggression.

    Up to 12 weeks post-intervention completion.

  • Preschool Social Behavioral Scale - Teacher Report (PSBS-TR): Physical Aggression Subscale

    Research assistant observers will complete the PSBS-TR physical aggression subscale to assess physical aggression. Raw scores are 6-30 with average scores on this measure ranging from 1-5, and with higher scores indicating higher levels of physical aggression.

    Up to 12 weeks post-intervention completion.

  • Preschool Social Behavioral Scale - Teacher Report (PSBS-TR): Prosocial Behavior Subscale

    Research assistant observers will complete the PSBS-TR prosocial behavior subscale to assess prosocial behavior. Raw scores are 4-20 with average scores on this measure ranging from 1-5, and with higher scores indicating higher levels of physical aggression.

    Up to 12 weeks post-intervention completion.

  • Preschool Social Behavioral Scale - Teacher Report (PSBS-TR): Physical Aggression Subscale

    Research assistant observers will complete the PSBS-TR physical aggression subscale to assess physical aggression. Raw scores are 6-30 with average scores on this measure ranging from 1-5, and with higher scores indicating higher levels of physical aggression.

    Up to 4 months post-intervention completion.

  • Preschool Social Behavioral Scale - Teacher Report (PSBS-TR): Relational Aggression Subscale

    Research assistant observers will complete the PSBS-TR relational aggression subscale to assess relational aggression. Raw scores are 6-30 with average scores on this measure ranging from 1-5, and with higher scores indicating higher levels of relational aggression.

    Up to 4 months post-intervention completion.

  • Preschool Social Behavioral Scale - Teacher Report (PSBS-TR): Prosocial Behavior Subscale

    Research assistant observers will complete the PSBS-TR prosocial behavior subscale to assess prosocial behavior. Raw scores are 4-20 with average scores on this measure ranging from 1-5, and with higher scores indicating higher levels of physical aggression.

    Up to 4 months post-intervention completion.

  • MacArthur Health and Behavior Questionnaire (HBQ) - School Performance Subscale

    Teachers will complete the HBQ school performance subscale to assess academic competence. Raw scores range from 5-25 with average scores on this measure ranging from 1-5, and with higher scores indicate higher levels of academic competence.

    Up to 12 weeks post-intervention completion.

  • MacArthur Health and Behavior Questionnaire (HBQ) - School Performance Subscale

    Teachers will complete the HBQ school performance subscale to assess academic competence. Raw scores range from 5-25, with average scores on this measure ranging from 1-5, and with higher scores indicating higher levels of academic competence.

    An average of 12 months post-intervention completion.

  • MacArthur Health and Behavior Questionnaire (HBQ) - School Engagement Subscale

    Teachers will complete the HBQ school engagement subscale to assess school engagement. Raw scores range from 0-16, with average scores on this measure ranging from 0-2, and with higher scores indicating higher levels of school engagement.

    Up to 12 weeks post-intervention completion.

  • MacArthur Health and Behavior Questionnaire (HBQ) - School Engagement Subscale

    Teachers will complete the HBQ school engagement subscale to assess school engagement. Raw scores range from 0-16, with average scores on this measure ranging from 0-2, and with higher scores indicating higher levels of school engagement.

    An average of 12 months post-intervention completion.

  • Social Skills Rating Scale (SSRS)

    Teachers will complete this standard measure of social skills. Raw scores range from 0 to 60, with average scores on this measure ranging from 0-2, and with higher scores indicating higher levels of social skills.

    An average of 12 months post-intervention completion.

  • Social Skills Rating Scale (SSRS)

    Research assistant observers will complete this standard measure of social skills. Raw scores range from 0 to 60, with average scores on this measure ranging from 0-2, and with higher scores indicating higher levels of social skills.

    Up to 12 weeks post-intervention completion.

  • Social Skills Rating Scale (SSRS)

    Research assistant observers will complete this standard measure of social skills. Raw scores range from 0 to 60, with average scores on this measure ranging from 0-2, and with higher scores indicating higher levels of social skills.

    Up to 4 months post-intervention completion.

Study Arms (2)

Intervention Group

EXPERIMENTAL

Participants will receive the Early Childhood Friendship project intervention (8x10-min puppet shows, 7x5-min gross motor activities7x5-min passive activities, up to 3x1-hour in-vivo behavioral reinforcement periods).

Behavioral: Early Childhood Friendship Project

Control Group

NO INTERVENTION

Participants will not receive the Early Childhood Friendship project intervention.

Interventions

Classroom-based intervention where teachers will implement 8 10-minute puppet shows, 7 5-minute active gross motor activities to reinforce the social skill of the week, and 7 5-minute passive rehearsal activities such as making their own puppet and practicing the steps of the week. Up to three 1 hour in vivo behavioral reinforcement periods will occur per week and during these free play sessions teachers and the main puppet will use developmentally appropriate praise to reinforce the use of the social skills of the week.

Intervention Group

Eligibility Criteria

Age4 Years - 6 Years
Sexall
Healthy VolunteersYes
Age GroupsChild (0-17)

You may qualify if:

  • A child is eligible if attending one of the participating child care centers in the greater Buffalo region of Western New York and planning to enter kindergarten in the fall.

You may not qualify if:

  • None

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University at Buffalo, SUNY

Buffalo, New York, 14260, United States

RECRUITING

Study Officials

  • Jamie M Ostrov, Ph.D.

    University at Buffalo, SUNY

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Kristin Tymchak, M.A./A.C.

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
OUTCOMES ASSESSOR
Purpose
BASIC SCIENCE
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Professor of Psychology, Clinical Area Head, Director of Clinical Training

Study Record Dates

First Submitted

May 25, 2023

First Posted

June 18, 2023

Study Start

August 16, 2023

Primary Completion (Estimated)

April 16, 2027

Study Completion (Estimated)

April 16, 2027

Last Updated

October 3, 2025

Record last verified: 2025-09

Locations