"Despite Training Manuals, Standard Operating Procedures (SOP's) and Basic Operation Manuals (BOM) etc. etc. Human Factors is (still) aviation worst nightmare."
Most air carriers' easily understood, universally endorsed, and stricly adhered to SOP rule is for the captain to take his paws off and to keep his paws off the throttle levers by V1. It is elementary and self evident that there is no further decision to be made at and beyond V1.
Some of the posters on this thread are obsessed with the idea of justifying an abort at or beyond V1 speed. It's stupefying and dangerous.