Unfair labor practice. An unfair labor practice in US labor law refers to certain actions taken by employers or unions that violate the National Labor Relations Act of 1935 (49 Stat. 449) 29 U.S.C. Â§ 151â169 (also known as the NLRA and the Wagner Act after NY Senator Robert F. Wagner) and other legislation.
Advanced age is the most common cause of hearing loss. One out of three people age 65-74 has some level of hearing loss. After age 75, that goes up to one out of every two people. Researchers don't fully understand why hearing declines with age. It could be that lifetime exposure to noise and other damaging factors slowly wear down the ears' delicate mechanics.
According to supporters of the idea of sensitive periods, this occurs because it is very easy for children to acquire certain abilities during a specific sensitive period. Also, once a sensitive period is passed, the development of the brain has progressed past the point where that particular ability can be easily absorbed. After this, the ability must be formally taught, it will take a great deal of effort to learn, and will not be as readily acquired by the child.