**4.6 Study limitations and strengths**

This paper is the first to report rates of bullying involvement and unwanted sexual experiences online and offline, in school and out of school, using parallel measures among youth in a national US sample. It also is the first to report relative rates of distress and the frequency of "knowing" the perpetrator among bully victims. It is not however, without limitation. The measures for unwanted sexual experiences are less comprehensive than those for bullying. It is possible that the general prevalence rate for unwanted sexual experiences would be higher if other environments (e.g., cell phone text messaging) were queried. It also is possible that caregivers monitored their children while they were completing the survey. This may have led to under-reporting, although comparisons across environments should still hold as there is little reason to believe youth would be more willing to report bullying at school versus online, for example. The sample is based upon English-speaking households. Findings are not generalizable to households that do not read English.

Comparisons of Bully and Unwanted Sexual

the manuscript.

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Experiences Online and Offline Among a National Sample of Youth 213

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