Question

Ollie feels as if her sorority is made up of many diverse and unique members. however, she feels like fraternities are composed of males who are all very similar to each other. her bias is known as:

Answer 1

 Her bias is known as "the outgroup homogeneity effect".

Outgroup homogeneity is the inclination for individuals to see ingroup individuals as more differing than outgroup individuals. The Outgroup Homogeneity Effect is the propensity to see an outgroup as homogenous, or as "all the same," while the ingroup is viewed as more heterogeneous or differed.