Does a person’s mental abilities depend on the size and mass of their brain?

No. A person’s abilities depend on the level of excitation of neurons and the rate of formation of interconnections between them, the number of connections between cells, the activity of cells in a particular area of the cortex.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.