| ||For all other Vault Boy bobbleheads that appear in the Fallout series, see Vault-Tec bobblehead.|
The Intelligence bobblehead is a miscellaneous item in Fallout 4. It permanently improves the Sole Survivor's Intelligence by 1, up to a maximum of 11 (if at 10 prior to pickup, otherwise maximum is 10).
In the northwest room of the Boston Public Library sitting on a control. (Unless you're in power armor, which for some reason causes the compass to orient this map differently. Then the control room is in the northeast corner of the building, 2nd floor.)