Compared with ineffective managers, those who excel invest a proportion of their time and effort trying to remedy their employees' deficiencies and a proportion of their time and effort trying to enhance their employees' talents.

Smaller; larger

Explanation:

Let us first fill in the gap from the question;

''Compared with ineffective managers, those who excel invest a SMALLERproportion of their time and effort trying to remedy their employees' deficiencies and a LARGER proportion of their time and effort trying to enhance their employees' talents''.

Ineffective managers are managers that shows bad traits at controlling and in the management of a body, an organization, or a company. An effective manager care less about people on his or her team, that is his or her followers and also lack great vision.

Unlike ineffective managers, effective managers are managers with great vision and they also inspires their team. Effective managers have good communicating skills which is not the case for an ineffective manager. Also, an effective managers helps in the enhancement of talents and skills of those that employed them