Does the size of an organism's brain affect its intelligence?
In general, "smarter" species do have larger brains - however the relationship between brain size and intelligence is not as widely accepted as it once was. The presence of a larger brain does not automatically mean the animal is smarter or more likely to survive. The evolution of Homo sapiens (humans) involved many successive increases in brain size, which corresponded with increased "intelligence". However, the overall body size was also increasing. It is believed that…
yes edit: Actually no it doesn't, it correlates to the size of the person that the brain is carrying out functions for. A 6ft tall man may have a larger brain than a 5ft tall woman it doesn't me she is any less intelligent simply that she is smaller however many do believe that brain size is an indication of intelligence but that is not true
The only way for paleontologists to try to determine the intelligence of an extinct animal is to compare its brain mass to its total mass. Troodon had the biggest brain to body mass ratio of any known dinosaur. Judging by brain size, scientists believe that Troodon had the same intelligence level as modern birds.