en ● Psychosocial Health مقاله مروری Review Article <div style="text-align: justify;"><strong>Background</strong>: Since positive parenting program (Triple-P) is one of the ways to improve parent-child interaction, conducting a meta-analysis will help determine its effect size. This study aimed to use meta-analysis to examine the effect of level 4 Triple-P on parent-child interaction with special needs in Iran.<br> <strong>Methods</strong>: The current study is a meta-analysis review study. Before analyzing the effect size of the mean differences, the PRISMA (preferred reporting items for systematic reviews and meta-analyses) method was used to investigate the decision tree model. Then, the effect size of Triple-P was investigated using the meta-analysis method. Twelve studies (out of the 37) were collected with the keywords &ldquo;Triple-P&rdquo; and &ldquo;parent-child interaction&rdquo; from Google Scholar, IranDoc, IranMedex, Magiran, and SID according to the inclusion and exclusion criteria. They were conducted in Iran during 2012-2021 and were analyzed through meta-analysis. The inclusion criteria of the articles included written in Persian, having a control group, being interventional, and using original data. The exclusion criteria included duplicate articles and non-compliance with the title with Triple-P level 4. The study instrument was a meta-analysis checklist. Funnel plot, fail-safe number, and Cochran Q test were used to assess the publication bias, expected confidence, and effect size heterogeneity, respectively. The obtained data were analyzed by comprehensive meta-analysis (CMA) software.<br> <strong>Results</strong>: Findings showed that the effect size of the mean difference rate of level 4 Triple-P on parent-child interaction was 0.59 (P<0.0001), which is medium according to the Cohen table. Fisher&rsquo;s z indicated a low standard error and no publication bias. The value of the Q test is significant, and the effect sizes are heterogeneous (P<0.0001).<br> <strong>Conclusion</strong>: Given the moderate impact of level 4 Triple-P, this method of parenting program can play an important role in improving the interaction of parent-child with special needs.&nbsp;<br> &nbsp;</div> <div> <div> <div class="msocomtxt" id="_com_2" language="JavaScript" on=""><illegal tag=""><span style="font-size:10pt"><span style="direction:rtl"><span style="unicode-bidi:embed"><span style="font-family:Calibri,sans-serif"><span lang="FA" style="font-family:"Arial",sans-serif"></span></span></span></span></span></illegal></div> </div> </div> Meta-analysis, Triple-P, Parent-child interaction 153 162 http://jrh.gmu.ac.ir/browse.php?a_code=A-10-1109-2&slc_lang=en&sid=1 Mohammad Ashori m.ashori@edu.ui.ac.ir 0421031042 100319475328460028079 Yes Department of Psychology and Education of People With Special Needs, Faculty of Education and Psychology, University of Isfahan, Isfahan, Iran.