cross-national patterns of gender diference in mathematics: a meta analysis

proposito: investigate the causes at gender diversity.

variable: gender diversity, women discrimination, underrepresentation of women in carrers in science, technology, mathematics, and enginer.

problem: a gender gap mathematics archivement persist in some nation but in other in light of underrepresentation of women in carrers in science, technology, mathematics, and enginer.

diseño: No experimental, transversal and explorative.

instumentos: psychological bulletin.

tipo de investigacion cualitativa.