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
Creature Features the 1970s, the films of Amicus Productions and Tigon British Film Productions, which included "Dr. Terror's House of Horrors" and "The House That Dripped Blood", became popular features on the shows. "Creature Features" also aired many "nuclear monster" and "space alien" science fiction movies. Created in the 1950s, these movies generally featured giant mutant monsters or aliens from outer space terrorizing Earth. These included "Attack of the 50 Foot Woman", "The Amazing Colossal Man", "Them!", "Tarantula", "The Thing from Another World", "It Came from Outer Space", "The War of the Worlds", and "Forbidden Planet". "Creature Features" usually aired on Friday