All technical employees at a paper mill take a course on how to operate a new paper-rolling machine.This course will improve job performance mainly by altering employee:

A) aptitudes
B) role perceptions
C) motivation
D) organizational citizenship
E) learned capabilities

The course on how to operate a new paper-rolling machine will improve job performance mainly by altering the technical employees' learned capabilities. They will acquire new knowledge and skills, which will help them to perform better on their job tasks. Aptitudes refer to inherent abilities, which are unlikely to change significantly with training. Role perceptions, motivation, and organizational citizenship can also impact job performance, but they are less likely to be directly affected by a course on technical operation.