Brain size area in women, corresponding to spatial versus language specializations. Small studies have attempted to link brain volume with functional measures such as P300 auditory evoked potentials but finding no association. Studies attempting to related sibling differences in IQ to differences in brain volume are hampered by relatively small sample sizes and the noisy nature of such difference scores, yielding weak evidence for cross-trait cross-sib correlations. The largest brain is that of the sperm whale, weighing about , and killer whales, weighing about . An elephant's brain weighs just over and a bottlenose dolphin's . Brain size tends to vary according
Bahamut This account is also found in al-Tha'labi's "Qiṣaṣ al-anbīyāʾ", but in that version God forces the whale (Lutīyā) into submission by sending a creature that invaded through its nose and reached its brain; it also claims to be an anecdote on authority of Kaʿb al-Aḥbār (d. 650s A.D.), a convert considered the earliest informant of Jewish-Muslim tradition to Arab writers. Although this is an instances of an Islamic tale that ascribes the origins of earthquakes to the cosmic whale/fish supporting the earth, more familiar beliefs in medieval Islam associate the earthquake with the bull, or with Mount Qaf. Jorge Luis