The focus of the study is to examine the relationship between left-handedness and increased intelligence among university undergraduates of Olabisi Onabanjo University, Ago-Iwoye. Historically, left-handed individuals have had to cope with many difficulties. The level of hand dominance, however, not only depends on the hand with which an individual writes but also on an entire system of processes working together: eye, hand, and foot dominance. Primary data was used for the study. The study sample consisted of both left-handers and right-handers who were drawn from various departments. A structured questionnaire was used to collect data and which were analyzed using appropriate descriptive and inferential statistics. The results showed that male left-handers (x = 115.50) were more intelligent than female left-handers (x = 101.34). The results also showed that left-handers with higher educational level were more intelligent than those with low educational level (t = 6.93, p<0.05). The results also showed that left-handers will be more intelligent in the areas of spatial and musical intelligence than right-handers. The study opined that left-handed individuals can do well in the areas of spatial and musical intelligence and that being a left-hander does possess some advantages for the individual as it would improve his/her retention and memory if well utilized.
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