No Means No Worldwide has invested in academic, peer-reviewed research on programming since 2009.




NMNW has six published papers in major scientific journals in collaboration with leading researchers at Stanford University and Johns Hopkins University. Two of the studies are randomized control trials.

NMNW has also been featured in two landmark literature reviews. Read articles below.


Sexual Violence Among Adolescent Girls and Young Women in Malawi: A Cluster-Randomized Controlled Implementation Trial of Empowerment Self-Defense Training

Published in BMC Public Health (2018)

This cluster-randomized controlled trial studied the effect of a standardized ESD program (IMpower) on sexual violence outcomes among primary and secondary school girls in three districts of Malawi. Results support the effectiveness of the intervention to reduce sexual violence victimization, and approach the elimination of violence against women and girls set forth with Sustainable Development Goal #5.


A Behavior-Based Intervention That Prevents Sexual Assault: the Results of a Matched-Pairs, Cluster-Randomized Study in Nairobi, Kenya

Published in Prevention Science (2016)

This cluster-randomized, matched-pairs, parallel trial of a behavior-based sexual assault prevention intervention in informal settlements of Kenya evaluated the impact on girls experience of sexual assault. Findings show "significant reduction in the rate of sexual assault among girls in this population." 


Evidence that Classroom-Based Behavioral Interventions Reduce Pregnancy-Related School Dropout Among Nairobi Adolescents

Published in Health Education & Behavior (2016)

This study evaluates the effect of behavioral, empowerment-focused interventions on the incidence of pregnancy-related school dropout among girls in Nairobi’s informal settlements. Analysis reveals that pregnancy-related school dropout decreased by 46%.


The Impact of a Six-Week School Curriculum on Boys' Attitudes and Behaviors Related to Gender-Based Violence in Kenya

Published in the Journal of Interpersonal Violence (2015)

This study evaluates boys' attitudes and behaviors towards girls and women. Evidence shows both improved significantly after receiving NMNW programming and were sustained one year later. Specifically, 74% of boys who witnessed sexual assault successfully intervened to stop it. 


Rape Prevention Through Empowerment of Adolescent Girls

Published in the Pediatrics Journal (2014)

This study evaluated an empowerment and self-defense training intervention for adolescent girls in the African context. This intervention proved highly effective at preventing sexual assault and should be replicable in other countries in sub-Saharan Africa and around the world.


A Self-Defense Program Reduces the Incidence of Sexual Assault in Kenyan Adolescent Girls

Published in the Journal of Adolescent Health (2013)

A standardized six-week empowerment defense program is effective in reducing the incidence of sexual assault in slum-dwelling high school girls in Nairobi, Kenya.



Violence Against Children: A Review of Evidence Relevant to Africa on Prevalence, Impacts and Prevention

Published in Big Win Philanthropy (2018)


Prevention of Violence Against Women and Girls: What Does the Evidence Say?

Published in The Lancet (2015)