Twentieth century psychologist H. J. Eysenck approaches questions of genius and creativity through the lens of modern psychology.

Genius and creativity are arguably the two most nebulous enclaves of human intelligence. While many seek out genius and several claim to offer it, few understand what makes a genius and what fosters their creative output.

Various routes have been traced in this quest for the origin of genius, such as cultural, socio-economic, pedagogical factors, or IQ and genetic composition.

The well-known psychologist Hans Eysenck, building on a lifetime of research, sought to address this question using an evidence-based approach. Genius was published in 1995.

Eysenck's monograph on genius and creativity combines four branches of psychology: the experimental, psychometric, clinical, and psychophysiological-genetic.

Eysenck, who died in 1997, held dubious views - since disproved - on a number of subjects, including race, illness, and IQ. An inquiry on behalf of King's College London has since found his papers to be 'incompatible with modern clinical science.'

Since 2019, a large number of his papers have been retracted as they were deemed 'unsafe.'