2017. Internal/external frame of reference: exploring the paradoxical relations between mathematics and self-concept across 29 countries: Internal/external frame of reference: exploring the paradoxical relations between mathematics and self-concept across 29 countries. Ghana Journal of Education: Issues and Practice. 4, (Dec. 2017), 44–59. DOI:https://doi.org/10.47963/gje.v4i.495.