Final answer:
According to Youker's typology, the attribute of specialization is crucial for a worker's proficiency in a job, leading to better performance and innovation.
Step-by-step explanation:
The typology Youker references would likely include the attribute of specialization when considering the factors that make a worker best suited for a given job. This is evidenced by the principle that workers who specialize in certain tasks often become more proficient, leading to increased productivity and higher quality outcomes. For instance, professions such as assembly line laborers, hair stylists, and surgeons benefit greatly from specialization, as it allows them to not only perform their duties more efficiently, but also to innovate in their respective fields.