Dr. kamran studies domestic violence and has designed a self-report scale that is meant to assess men's negative attitudes toward women. to validate her scale, she administers it to two groups of rece

Dr. kamran studies domestic violence and has designed a self-report scale that is meant to assess men's negative attitudes toward women. to validate her scale, she administers it to two groups of recently incarcerated male prisoners: prisoners convicted of domestic violence and prisoners convicted of other crimes. dr. kamran finds a statistically significant difference in the mean scores of the two groups. what technique is dr. kamran using to validate her scale?